Re: Apple & FreeBSD relationship

2011-03-09 Thread David Kelly

On Mar 9, 2011, at 4:50 PM, Chad Leigh -- Shire.Net LLC wrote:

> There are some/a few/several people working at Apple that play or used to 
> play a large role in FreeBSD.  So they were basically paying these people's 
> salaries for their day job which allowed them to be active in FreeBSD.  Also, 
> there is some code put-back I believe.

Of particular note was the contributions of patches to fix NFS race conditions. 
Plus tools to stress and duplicate those conditions.

> Most of what Apple used from FreeBSD was the userland and the kernel 
> interface so that the Darwin kernel could be used with FreeBSD userland 
> utilities that affect the kernel etc.Mac OS X uses a totally different 
> underlying kernel and architecture but made a FreeBSD like kernel interface 
> in order to be able to use certain sets of FreeBSD stuff.

Believe a number of FreeBSD drivers made it into MacOS X. Don't know of any 
Apple product which used Intel Etherexpress Pro chipsets but I popped a PCI 
card in a Mac one day and it magically worked as if it had always been there.

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Re: Apple & FreeBSD relationship

2011-03-09 Thread David Kelly

On Mar 9, 2011, at 5:31 PM, Frank Shute wrote:

> Don't invest your cash in a company that has reached it's peak and is
> on it's way down after it's charismatic leader dies sooner rather than
> later.


They said that at $50/share.
At $100.
At $200.
At $300.
And continue to say it at $350.

There are a lot of smart people at Apple who have had nothing better to do the 
past 10 years than to study and learn from Steve Jobs.

I'm waiting for $500.

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Re: setting up svn server - Connection refused

2011-02-25 Thread David Kelly

On Feb 25, 2011, at 3:23 AM, Anton Shterenlikht wrote:

> When I try to connect to the svn server, I get this:
> 
> ZEEV> svn co svn://localhost/home/mexas/zzz .
> svn: Can't connect to host 'localhost': Network is unreachable
> ZEEV> svn co svn://10.10.10.14/home/mexas/zzz .
> svn: Can't connect to host '10.10.10.14': Connection refused

Forget the SVN server daemon its much easier to use svn+ssh:// than svn://

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Re: Invitation

2011-02-14 Thread David Kelly
On Mon, Feb 14, 2011 at 08:54:59PM +, Simon Tibble wrote:
> 
> Now, see, I can't help thinking that if we all just abandoned money
> then the motivation for people to do this sort of thing would then
> disappear - would it not?

Without money, how would we keep score to know who is winning?

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Re: How to adjust man page line length [SOLVED]

2011-01-19 Thread David Kelly

On Jan 19, 2011, at 10:51 PM, David J. Weller-Fahy wrote:

[...]

> That did the job, but made `man -k`, which my fingers find familiar,
> unusable.  I remembered you were running a CURRENT snapshot, so figured
> I'd check the difference between man in HEAD and 8.1-RELEASE... WOW!
> The man in HEAD is now a shell script.


In ancient times man was originally a shell script. What is old is new again.

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Re: How to adjust man page line length

2011-01-18 Thread David Kelly
On Tue, Jan 18, 2011 at 06:11:13PM +0100, Giorgos Keramidas wrote:
> On Mon, 17 Jan 2011 21:40:38 -0600, "David J. Weller-Fahy" 
>  wrote:
> > To expand on the question in the subject: How does one tell `man`
> > not to automatically format man pages to 80 columns?  I'm looking
> > for a fairly easy way to do this, or confirmation it would involve
> > internal gymnastics I may not be willing to perform.
> 
> Set the 'columns' attribute of your tty:
> 
> stty columns 60
> man xxx
> 
> This should do it.

*Should*? You posted without trying it? (I tried, did not work).

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Re: How to adjust man page line length

2011-01-18 Thread David Kelly

On Jan 17, 2011, at 9:40 PM, David J. Weller-Fahy wrote:

> To expand on the question in the subject: How does one tell `man` not to
> automatically format man pages to 80 columns?  I'm looking for a fairly
> easy way to do this, or confirmation it would involve internal
> gymnastics I may not be willing to perform.

Perhaps FreeBSD should look into using man from MacOS X where "man -c"
will do as requested above. Will format to the output device width.

For FreeBSD I suspect the solution involves "man -t" and then studying
how to tell groff(1) to format for one's console rather than the default
Postscript output. "man -t" generates very nice printable man pages.

As for the request not to be CC'ed in reply, put the list address in the
 Reply-To: header as I have done here.

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Re: FreeBSD Decision

2011-01-14 Thread David Kelly
On Fri, Jan 14, 2011 at 07:46:20PM +0100, Alessandro Baggi wrote:
> Hi list, I don't want make a flame post but I would ask an objective 
> opinion, then not a camp opinion, about using FreeBSD or Debian Linux in 
> a production environment for solution as such as cluster of some 
> service, proxy, SAN, performance, smp with an high number of cpu, PDC, 
> Mail Server (qmail), raid software, security support and hardware 
> support. I'm using Slackware Linux but in production environment there 
> are problem with packages and distro update and other support.
> Then for you, what is the best for those solutions?

I don't fully understand your needs but would suggest most anything you
are familiar with and can find support from others will do.

Wish I could say MacOS X Snow Leopard Server has been flawless but it
has not. Still its something worth evaluating. An entire Mac Mini Server
with two 500G drives an unlimited user license is a budget busting $995
full MSRP.

Many former FreeBSD core members now work for Apple. Many of the man
pages in MacOS X still say FreeBSD. Apple has done a lot for FreeBSD.

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Re: fetching mail (but not fetchmail)

2010-12-23 Thread David Kelly

On Dec 24, 2010, at 12:01 AM, Chris Brennan wrote:

> Thanks but I I think maybe I wasn't entirely clear. With fetchmail (which is
> why I said but not fetchmail in the subject) I very well can download all my
> mail. For reading locally, on the console (not what I had in mind). Or is
> this where dovecot comes into play? To prepare the previously fetched mail
> and prepare it for pop/imap access?


Yes, that is exactly what he was saying. Fetchmail puts it where ever you tell 
it to. All you have to do is put the email where dovecot can find it in a 
format dovecot understands. You can think of dovecot as a remote controlled 
email reader, one which can be driven by Mail.app, Outlook, or Firefox. But in 
doing this you are not giving up the ability to do mail on your console.

When using maildir format both mutt and dovecot can operate out of the same 
mail repository at the same time.

For example I use ~/Maildir/ and the maildir format.

Also use procmail for initial sorting and filtering with bogofilter. In my 
.fetchmailrc like this:

defaults
proto pop3
fetchall
mda "/usr/local/bin/procmail -d dkelly"


.procmailrc something like this:


MAILDIR=$HOME/Maildir/  #you'd better make sure it exists
DEFAULT=/var/mail/$LOGNAME

# Make a copy of everything incoming:
:0 c
$HOME/Mail_Backup/

# Add a Lines: header if one is lacking, so mutt knows a message's size
:0 Bfh
* H ?? !^Lines:
* -1^0
*  1^1 ^.*$
| formail -A "Lines: $="

# bogofilter -u trains all tokens as spam or non-spam
:0 HB:
* ? bogofilter -u
.spam/

# detect dupes
:0 Whc: msgid.lock
| formail -D 131072 msgid.cache

# divert dupes
:0 a:
.dups/

# ultimate point of delivery
:0
./


The above .procmail puts a copy of everything in ~/Mail_Backup/ just in case.

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Re: printer recommendations?

2010-12-02 Thread David Kelly

On Dec 2, 2010, at 10:38 PM, Charlie Kester wrote:

> My old HP Laserjet 4+ is broken and I'm thinking about buying a new
> printer.  I'd appreciate hearing recommendations from the list.

My Brother HL5250DN has served 14,000 pages very satisfactorily so far. Was 
$250 full MSRP at Staples in 2005 or 2006. Believe the current version is 5350. 
Commonly appear on sale for $189 (but not that I've seen at Staples).

The xx50's have PCL and Postscript emulation, an xx40 only has PCL. xx70 
appears to be a 50 with WiFi.

"D" stands for duplex.

"N" for ethernet. Speaks lpd.

3rd party toner refills for 7,000 pages are $20.

The one thing my 5250 has disappointed is printing of envelopes. The envelope 
gets printed but comes out wrinkled and nearly wadded up. Perhaps the 53xx's 
fixed this? I keep an HP inkjet loaded with envelopes. This is important 
because I print something like 2 envelopes per month.  :-)

Several years ago I was secretary/treasurer of a dirtbike club and was printing 
as many as 1800 envelopes and the materials inside the envelopes per year. Many 
times I went to the Post Office and bought $400 of stamps.

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Re: IPFW at startup.

2010-11-15 Thread David Kelly
On Mon, Nov 15, 2010 at 10:52:41AM -0800, Dave Robison wrote:
> I haven't seen someone use "firewall_type" as a path to the config
> file. If you check the default rc.firewall file, you will see several
> types of default firewall settings, such as "open" and "closed". You
> want to set "firewall_type" in rc.conf to be "open" or whatever your
> firewall type is in /etc/rc.firewall.

What he needs to do is use firewall_script="/etc/ipfw.rules" rather than
firewall_type=

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Re: Which OS for notebook

2010-10-05 Thread David Kelly
On Mon, Oct 04, 2010 at 01:11:30AM -0300, Leandro F Silva wrote:
> 
> Which OS are you using on your notebook, FreeBSD / Linux or MAC ?
> Also, can you tell us the hardware, Sony / HP etc..

MacOS X 10.6.4. Its solid, supported, and Unix. In general the Unix
things that need to be treated differently between MacOS and FreeBSD are
exactly the sort of things you need to be prepared for for jumping
between any Unix (or Unix clone).

Apple hardware is exceptionally good. Generally run 5 to 8 years before
upgrading. Got my original MacBook Pro in January 2006 and its still
Going strong on the original battery. Its biggest limitation today is its
2GB max memory, but the Intel Core Duo 1.83 GHz CPU is plenty good.

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Re: migrate system disk

2010-09-22 Thread David Kelly
On Wed, Sep 22, 2010 at 08:06:13AM -0700, D?nielisz L?szl? wrote:
> Hello,
> 
> I have an old HDD which should be replaced soon, actually that HDD
> stands as my system disk, what is your suggesion, how should I migrate
> the FreeBSD 8.1 from the old disk to the new one?

If you must copy exactly what you currently have then I'd use a
variation on the handbook method which has already been suggested at
http://www.freebsd.org/doc/handbook/backup-basics.html

Rather than example 18-1 or 18-2 I'd pipe dump directly into restore. Do
this once for every filesystem. Something like:

( cd /; /sbin/dump -0uanf - / ) | ( cd /newmount; /sbin/restore -rf - )

Where /newmount is the temporary new mount point for your new drive.
Left preparation of new disk as an exercise for the reader.


However there is a good argument to be made for making a totally new
installation of FreeBSD. Then go through the original disk picking up
the necessary files to customize for your use. As you find these files
put their names in a file named something like files.list that in the
future one could "tar -T files.list" (thats an incomplete example) to do
a minimal quick backup or restore of only the files which are unique to
your machine. This is an opportunity to find these files, and to
practice using tar -T to lift them from one drive and write them to
another.

I wouldn't try to move the ports collection with the above technique.
However it would be a good idea to save a list of installed ports that
one could use to reinstall.

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Re: Is this bunk.

2010-08-23 Thread David Kelly
On Mon, Aug 23, 2010 at 12:12:59AM -0400, Bob Hall wrote:
> On Mon, Aug 23, 2010 at 01:25:34AM +0100, Garry wrote:
> > Mac OS X is basically BSD that's been appleised (serious vendor
> > lock-in), they do give a little back to BSDs, but have made sure
> > that BSDs can't get much off of them, but they can get a lot out of
> > BSD.
> 
> If the kernel is the basis of an OS, then OS X is basically the Mach
> kernel.

Kirk McKusick of FFS fame has been quoted as saying to the effect, "The
difference between Linux and BSD is that all BSDs have the same userland
but different kernels. All Linuxes have the same kernel but differing
userlands."

> The userland part of early versions of OS X borrowed heavily from
> NetBSD, but much of this has been replaced with FreeBSD in later
> version. Or so I'm told.

What I've seen of it its been primarily FreeBSD from the start. There
are also a number of FreeBSD device drivers in MacOS X, not the least of
which is fxp. The irony of that is Apple has never shipped an Intel
based NIC. Or at least not for years after fxp was included. The fxp man
page existed in earlier MacOS X but not in 10.6.4.

NICs supported by fxp were favorites of Jordan Hubbard and other
FreeBSD'ers now working for Apple.

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Re: Is this bunk.

2010-08-22 Thread David Kelly
On Aug 22, 2010, at 7:25 PM, Garry wrote:

> This is a conversation held on a UK group page, can you confirm or deny this
> as twaddle.
> 
> Mac OS X is basically BSD that's been appleised (serious vendor lock-in),
> they do give a little back to BSDs, but have made sure that BSDs can't get
> much off of them, but they can get a lot out of BSD.

Apple hired a lot of key people from the FreeBSD project. I don't know just 
what comes back to FreeBSD out of Apple but suspect the reason you and myself 
don't know is that Apple doesn't care to toot their own horn. Apple made a 
significant contribution a while back testing and improving NFS.

As for how much of MacOS X is BSD, pretty much all of the command line stuff. 
Apple has gone to great lengths to XML-ize most everything so while MacOS is 
BSD, its probably the most distant BSD cousin.

> Also, Windows uses  (or used to use) a BSD stack for networking for
> instance.

NT 3.51 used to flash a Berkeley Software Distribution copyright message on the 
text console during boot because some code was used. Doubt MS could leave well 
enough alone to simply lift the entire stack. The VMS-inspired NT kernel was 
probably not organized in such a way as to optimally use an unmodified BSD 
network protocol stack.

> So, in supporting/using BDS i would enevatibaly end up writing code for it,
> or filing bugs or whatever.
> (I have assisted with a few Linux drivers and written kernel patches, as
> well as working on things like DirectX 3D 9 for Wine and work on KDE etc...)
> 
> Having seen how BDS license software has been used, to create highly tied
> in, almost crippled proprietary software, I do not feel that I can support
> software developed under such licenses.

So why are you here? Trolling?

It bugs the heck out of some people when others manage to build on their work 
to make something better, and then not give it away to everyone else. Others 
realize that if what we do is truly useful then others will want to use it to 
build bigger and better things. That it doesn't matter if we sell our work or 
give it away, what others do with it is no skin off our noses. Our original 
work is still exactly as accessible as it was before others made something more 
of their own version of it.

> Web-Kit has actually worked quite well as an open system, even though Apple
> done a hostile take over of the project from KHTML in KDE.
> So, the GPL has worked to produce an open product in Web-kit but the BSD
> license has lead to vendor lock-in on the part of Microsoft and most
> significantly Apple.

Thats one of the big problems of the GPL-mindset. Seems they spend a whole lot 
more time cloning the work of others than in actually creating anything new.

> This does not mean to say that I have a problem with the quality of the code
> in BSD, I just feel that the license is counter productive.

There is nothing in the BSD license permitting a "hostile takeover." Some would 
claim FreeBSD has executed a "hostile takeover" of what it is to be BSD. The 
pre-FreeBSD code is out there, you are welcome to it. Some would say OpenBSD 
attempted a hostile takeover of BSD.

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Re: Any awk gurus on the list?

2010-08-20 Thread David Kelly
On Fri, Aug 20, 2010 at 12:12:20PM -0500, Paul Schmehl wrote:
> 
> But when I add an FS to the script, I get odd results:
> 
> #  awk '!/#/ { FS=";"; for (i=1; i<=NF; i++) { if ( $i ~ /sid/) 
> {mtcmsg[sid]=$i; print mtcmsg[sid]}}}' < 
> /usr/local/etc/snort/rules/mtc.rules.test
> sid:299913;
> sid:52123
> sid:3001441
> sid:1444
> sid:2008120
> sid:5001684
> sid:2001683
> sid:22466
> sid:2002750
> sid:303
> sid:29232
> sid:2232
> sid:300
> sid:2003070
> sid:2003484
> sid:2003603
> sid:3104
> sid:28
> 
> Why is the first value indented and not stripped of the semi-colon?

Because field breaks occur first, then the match on the left, and only
when there is a match on the left is the script in {} executed. FS is
global so it sticks around for the next line of input.

I would suggest that you not try to learn awk on the command line but
put your script in a file. Then once you have it working and know what
you are doing put it on a single command line if its simple enough.

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Re: Can't remove or move file

2010-08-20 Thread David Kelly
On Fri, Aug 20, 2010 at 09:00:54AM -0700, Rem P Roberti wrote:
>  This is a new one for me.  I converted a YouTube selection using 
> youtube_dl and the file that was created was named -elDeJaPWGg.flv.  
> When I try to rename it, or delete it, I get an error message thus:
> 
> root@ ~: rm -elDeJaPWGg.flv
> rm: illegal option -- e
> usage: rm [-f | -i] [-dIPRrvW] file ...
>unlink file
> 
> No switch with either the rm or mv command works.  What is actually 
> going on here?

Among all the other suggestions this one was missing:

rm ./-elDeJaPWGg.flv

A similar stunt is required when using less to view +DESC and +CONTENTS
files in /var/db/pkg/*/ as the leading plus sign has meaning to less on
the command line.

less ./+DESC

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Re: Anti virus, anti spam step guide.

2010-08-04 Thread David Kelly

On Aug 4, 2010, at 9:19 AM, Jorge Biquez wrote:

> Hello all.
> 
> I am looking documentation for implementing, the easiest way anti virus and 
> anti spam configuration for non tech users and out of the box after 
> installing FreeBSD (actually using 7.3 Release).

[snip]

Do not edit a reply to another thread into something else. This is not the same 
thing as a new email.

Address a new email to the list with your new thread.

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Re: Typical Network Performance

2010-08-02 Thread David Kelly

On Aug 1, 2010, at 11:31 PM, Corey Smith wrote:

> On Sun, Aug 1, 2010 at 7:30 PM, David Kelly  wrote:
>> Gigabit ethernet from a 2.8 GHz P4 to or from MacPro I am only limited by 
>> disk data rate. About 60 MB/sec on one end of the disk, more on the other 
>> end of the disk.
> 
> Did you try realtime monitoring your network interface?
> 
> # route -n get 
> interface: 
> 
> # netstat -I  -w 1

No. I saw numbers that I was reasonably happy with and didn't pursue further.

> Do you see errors on the interface?

Nope. 60 MB/sec via FTP is about 60% of gigabit and was faster than some disk 
accesses.

> # netstat -I 
> 
> Another trick to eliminate disk io from the equation is to use nc:
> 
> machine1 :
> # nc -o -l 2000 > /dev/null
> 
> machine2:
> # dd if=/dev/zero bs=1M count=50 | nc machine1 2000

60 MB/sec was the average over gigabytes of data. Real data. Real network wire.

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Re: Typical Network Performance

2010-08-01 Thread David Kelly

On Aug 1, 2010, at 4:18 PM, Jason C. Wells wrote:

> I have a 100 mbps (12,207 KiB/s) home LAN in full-duplex.  A 1 MiB file 
> transfers at 146.7 KiB/s via wput.  The same file transfers at 91.34 KiB/s 
> via samba.  That's less than 1% of available transfer rate.  Seems like my 
> transfers are slow.  I do better than that when installing via the internet.
> 
> Does the FTP performance compared to available bandwidth seem right?  Is the 
> relative performance of samba to FTP right?  I read a couple quick links on 
> the net which said, "It's complicated."

Gigabit ethernet from a 2.8 GHz P4 to or from MacPro I am only limited by disk 
data rate. About 60 MB/sec on one end of the disk, more on the other end of the 
disk. 

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Re: Strip high bit from text?

2010-07-22 Thread David Kelly
On Wed, Jul 21, 2010 at 04:03:46PM -0700, Chuck Swiger wrote:
> 
> > Already use procmail so adding an automatic filter should not be
> > difficult if only I can come up with on.
> > 
> > Tried "tr \240 ' ' < testfile | hd" and was not able to change the 0xa0
> > into anything. Have already spent much more time trying to make tr or
> > sed do the job than it would have taken to knock something out in C, but
> > I think there should be something laying around already in the base
> > system to perform this task.
> > 
> > Suggestions? Repair the email while procmail has it? Reconfigure mutt 
> > and/or vim?
> 
> If you've got procmail in the loop already, then calling iconv  as a filter 
> like so:
> 
>iconv -f utf-8 -t ascii
> 
> ...is likely to help.  Another choice would be to switch to using a
> MIME+Unicode/UTF-8 aware mail reader.

Am thinking I initially succumbed to the novice goof of not escaping the
backslash in "tr \240 ' ' < testfile | hd". Currently have this in my
procmailrc but haven't seen an example come through. For some reason
today my friend's Blackberry is sending 7bit rather than
quoted-printable. He doesn't know why. 

:0 fW
* ^X-MIME-Autoconverted: from quoted-printable to 8bit
| tr '\240' ' '
:0 afW
| formail -I "X-Converted: 0xA0 Stripper"

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Strip high bit from text?

2010-07-21 Thread David Kelly
I regularly get email from a Blackberry user which my ISP then adds
this header, "X-MIME-Autoconverted: from quoted-printable to 8bit". So
far so good but the result always contains a number of 0xa0's in places
a plain old space belongs. Mutt/vim renders these as "?" making a
complete mess of things.

Already use procmail so adding an automatic filter should not be
difficult if only I can come up with on.

Tried "tr \240 ' ' < testfile | hd" and was not able to change the 0xa0
into anything. Have already spent much more time trying to make tr or
sed do the job than it would have taken to knock something out in C, but
I think there should be something laying around already in the base
system to perform this task.

Suggestions? Repair the email while procmail has it? Reconfigure mutt
and/or vim?

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Re: slow down dd - how?

2010-07-09 Thread David Kelly
On Fri, Jul 09, 2010 at 01:44:00AM -0500, Robert Bonomi wrote:
> >
> > > How can I slow down dd?
> >
> > you could use some creative shellscripting (probably in addition to idprio):
> >
> > dd if=/dev/zero bs=1024k | ( dd bs=1024k count=10; sleep 3 ) | dd bs=1024k 
> > of=/dev/somewhere
> >
> > This pauses for 3 seconds for every 10MB written. ...
> 
> I must be missing something. 

You are not missing anything.

> Doesn't that "dd ... ; sleep" in the sub-shell need to be in a _loop_
> of some sort?

Yes.

dd if=/dev/zero bs=1024k | ( dd bs=1024k count=10; sleep 3 ) | dd bs=1024k 
of=/dev/null
0+10 records in
0+10 records out
655360 bytes transferred in 0.001183 secs (554077619 bytes/sec)
0+10 records in
0+10 records out
655360 bytes transferred in 3.003105 secs (218227 bytes/sec)

> I would expect the dd in the sub-shell to _exit_ after the first 10mb, 
> whereupon the subshell would exit after the 3 second sleep, whereupon 
> 'somebody" is going to holler about a 'broken pipe'.

Am not sure why the actual example blocksize was 64k but the results are
the same for FreeBSD and MacOS X.

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Re: slow down dd - how?

2010-07-08 Thread David Kelly
On Thu, Jul 08, 2010 at 06:44:38PM +0200, Roland Smith wrote:
> On Thu, Jul 08, 2010 at 05:50:52PM +0200, Jozsi Avadkan wrote:
> > How can I slow down dd?
> 
> Play with the block size parameter (bs). Smaller block sizes means more
> reads. The default is 512 bytes, which is very small.
>  
> > I don't want to slow down the pc, when generating a big file [~40
> > GByte].

I don't think Jozsi wants to burn more CPU cycles, just slow the
process. Perhaps to attract less attention? Or interfere less with other
processes.

Nice(1) is a good start but rtprio(1) is probably where he should look.

Also consider that writing a program of your own to serve as a slow pipe
shouldn't be very hard. Think it would be a good exercise as an
introduction to Unix programming. Simply copy stdin to stdout with a
usleep(3) between. Pipe dd through your slowpipe program.

Someone else has probably written a slow pipe. I haven't looked.

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Re: VLANs is this right?

2010-07-05 Thread David Kelly


On Jul 5, 2010, at 5:59 PM, Steve Bertrand wrote:


On 2010.07.05 12:57, David Kelly wrote:

On Mon, Jul 05, 2010 at 10:16:19AM -0600, Modulok wrote:


Criteria:
   - HostA must never directly talk to HostB.
   - Both hostA and hostB have an Internet connection.

What I have to work with:
   proCurve switch which supports VLANs.
   2x Intel NICs in FreeBSD which support VLANs.


Am thinking you are approaching it the wrong way.


I wasn't going to, but I'd like to respond to your post. In no way  
am I

attempting to knock the fact that you tried to help, I'd just like to
clarify a few things...

My personal belief is that the OP is approaching this in the best
possible way.

Not familiar with the specifics of a ProCurve switch but that's a  
high
end unit, not a Netgear. I would expect you could configure the  
switch

to disallow the MAC addresses from talking to each other of hostA and
hostB.


I would expect a residential-grade NetGear be configured in such a  
way,

not a higher-end switch.


Generally a residential SOHO Netgear switch is unmanaged and not  
configurable. Sometimes this grade of gear gets confused when one  
moves a host from one port to another that it must be power cycled to  
clear the error from its MAC tables.



Furthermore, it would be even easier to disallow hostB from within
hostA's firewall. And do the same at hostB.


Easier if you have 2-10 machines, that are not laptops, and never get
replaced.

Your expectations are not scalable, nor do they provide a network-wide
solution. If the OPs network grows to 200 vlans with 15k hosts,
maintaining such a setup is no where near feasible. This is why the
'higher-end' gear allows such functions.


I didn't hear "scalable" in the specification, only hostA, hostB, one  
ProCurve, and one FreeBSD gateway/router connected to the internet.


By putting users (ie. client systems, or even business functional  
units)
into vlans, security policies can be enacted in one fell swoop (one  
ACL,

aka firewall rule) within the device they access the other portions of
the network.


As long as the switch (which you have control over) encapsulates a  
specific port to a VLAN then you are correct in that VLAN is the best  
way. But if one must configure the untrusted host to only speak VLAN  
then one doesn't have the desired security.


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Re: VLANs is this right?

2010-07-05 Thread David Kelly

On Jul 5, 2010, at 12:30 PM, Modulok wrote:

> It was a simplified diagram of what I thought I needed. ( Which may or
> may not be what I actually need! )
> 
> Basically, I want a port on the switch that I can plug un-trusted
> devices into.


Seconding Peter's request that you not top-post. We read and write this 
language left to right, top to bottom, and nothing about email changes that.

You say "un-trusted devices" but would have to trust the device to configure a 
VLAN interface. Or back to the ProCurve, it would need to be configured to 
tunnel everything on a the untrusted port into a VLAN. And/Or configure so that 
the untrusted port is switched only to the FreeBSD router port.

Would be easiest to slip another NIC in the FreeBSD router for this purpose. 
Then no VLAN, everything is handled in your firewall.

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Re: VLANs is this right?

2010-07-05 Thread David Kelly
On Mon, Jul 05, 2010 at 10:16:19AM -0600, Modulok wrote:
> 
> Criteria:
> - HostA must never directly talk to HostB.
> - Both hostA and hostB have an Internet connection.
> 
> What I have to work with:
> proCurve switch which supports VLANs.
> 2x Intel NICs in FreeBSD which support VLANs.

Am thinking you are approaching it the wrong way.

Not familiar with the specifics of a ProCurve switch but that's a high
end unit, not a Netgear. I would expect you could configure the switch
to disallow the MAC addresses from talking to each other of hostA and
hostB.

Furthermore, it would be even easier to disallow hostB from within
hostA's firewall. And do the same at hostB.

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Re: Gaming

2010-04-29 Thread David Kelly
On Thu, Apr 29, 2010 at 10:10:20AM -0700, Joe's Morgue wrote:
> Looking thru your manuals, I have not seen anything about gaming on a
> FreeBSD machine. ?

You are not reading the manual correctly. Then *entire* manual is the
game.  :-)

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Re: Recommendation on GPS time source for FreeBSD

2010-01-30 Thread David Kelly


On Jan 30, 2010, at 3:51 AM, Per olof Ljungmark wrote:


Hi all,

Does anyone have a recommendation on a good GPS receiver/board for  
use with NTP/FreeBSD to create a stratum 1 public time server?


Preferably something above the Garmin "puck" level but not  
ridiculously expensive either...



Why would you want something more than the Garmin "puck"?

I have a couple of instrumentation grade GPS's at work but their  
primary justification is to generate IRIG time to sync a multitude of  
instruments which expect a time signal in IRIG format.


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Re: Sendmail & Procmail

2010-01-29 Thread David Kelly
On Fri, Jan 29, 2010 at 02:59:34PM -0500, Clayton Scott Kern wrote:
> I just upgraded to FBSD 8.0 from 6.4 and I'm having a problem with
> sendmail passing email to procmail.  I only use this combination for
> email from root's cron jobs.  Right now emails to me from cron go to
> /var/mail/ckern1.

[...]

> I created the cf file using make cf, then make install and make
> restart.

OK, but did the procmail enhancements make it in the generated .cf file?

> What have I missed.  This is the same setup on 6.4 and it worked fine.

If making procmail available (or mandatory) for all users I can see
justification for what you are trying. But for just one user why not
keep it simple with a "|/usr/local/bin/procmail" in /etc/aliases?

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Re: OT: finding every file not in a list

2010-01-28 Thread David Kelly

On Jan 28, 2010, at 4:23 PM, CyberLeo Kitsana wrote:

> Aryeh M. Friedman wrote:
>> I have a list of files that should be in a dir tree and want to remove
>> any files from the tree not in list (i.e. if it is on the list keep it
>> else rm it)... any quick way to do this?
> 
> # ls -1F
> keep
> old/

[...]

I think mtree(8) is the proper tool for this job. Especially the -r option:

 -rRemove any files in the file hierarchy that are not described in
   the specification.

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Re: Recommendations for NICs?

2010-01-21 Thread David Kelly
On Thu, Jan 21, 2010 at 12:20:34PM -0600, John wrote:
> On Thu, Jan 21, 2010 at 10:12:29AM -0800, Chuck Swiger wrote:
> > 
> > Intel (fxp, em) and Broadcom (bce, bge) make fine NICs, and the
> > older DEC/Intel 21x4x Tulip series (dc/de) was quite good as well.
> > The Marvel Yukon (msk) and nVidia MCP (nfe/nve) seem to be OK
> > (although older nVidia hardware had bugs); the Realtek (re/rl) and
> > VIA (vr/vge) are at the bottom of the heap, especially the older
> > pre-gigabit hardware.
> 
> Thanks!  That's perfect.  I have a chance to buy a few Intel Pro
> 10/100 (fxp) cards.  I guess I'll take it!

Snag 'em! My favorite "no worry NIC." In recent years one could pick
them up surplus for $2 to $5. Then "they just work." And if one is
forced to use Windows the Intel driver (not the one Windows ships) adds
a lot of useful stuff which is missing, such as the ability to *see*
(without leaving the application) what IP address the card is using.

Oh, and not only that but the Intel cards work (without need to install
drivers) on MacOS X PCI machines.

> Just curious, though - you don't mention 3Com cards one way or the
> other, yet there's a lot of them out there.  Any comment on those?

3com's downfall has been due to their mixed bag of sometimes great,
sometimes disappointing.

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Re: Endianness

2010-01-12 Thread David Kelly
On Tue, Jan 12, 2010 at 11:29:21PM +0200, Kaya Saman wrote:
> David Kelly wrote:
> >On Tue, Jan 12, 2010 at 12:51:00PM -0800, Rob Farmer wrote:

[...]

> >>I'm sure it has been answered somewhere, but I can't find it - which
> >>FreeBSD archs are little/big endian? Thanks.
>
> >i386 is little endian. Would expect ia64 to be the same.
> 
> SPARC is big endian. Or at least it used to be.
> 
> Power4,5,6 are all big endian too if I'm not mistaken.
> 
> Correct me if I'm wrong but anything based around the CISC
> architecture is big endian.

Believe the O.P. is asking, "What endian is FreeBSD on these
architectures?"

If I was making an application that needed endian information then I'd
look in arpa/inet.h and machine/endian.h to discover what I was running
on.

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Re: Endianness

2010-01-12 Thread David Kelly
On Tue, Jan 12, 2010 at 12:51:00PM -0800, Rob Farmer wrote:
> I'm trying to create a port of an application which only works on
> little endian systems and I'm trying to figure out how to set
> ONLY_FOR_ARCHS.  Wikipedia says PowerPC, Sparc, and IA64 are bi-endian
> and the OS chooses the mode. I'm not familiar with these platforms -
> I'm sure it has been answered somewhere, but I can't find it - which
> FreeBSD archs are little/big endian? Thanks.

i386 is little endian. Would expect ia64 to be the same.

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Re: "Checksum mismatch -- will transfer entire file"

2009-12-25 Thread David Kelly

On Dec 25, 2009, at 12:43 AM, Victor Sudakov wrote:

> Colleagues,
> 
> Am I the only one to have this problem? 


No.

Telling you more than I know: FreeBSD.org is moving (or has moved) from CVS to 
SVN. Is my guess that what we are seeing is an artifact of that move where data 
is hacked into cvs compatible format and all cvsup can do is pull down the 
entire file.

I would be happy to use svn as I do for my own projects.

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Re: Invitation to connect on LinkedIn

2009-11-18 Thread David Kelly
On Wed, Nov 18, 2009 at 01:07:46AM -0800, Andrei Antoukh wrote:
> LinkedIn
> 
> 
> Andrei Antoukh requested to add you as a connection on LinkedIn:
> --

Why isn't LinkedIn in FreeBSD.org's spam blocker?

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Re: How do I replace the built-in OpenSSL with a source tarball ?

2009-10-28 Thread David Kelly
On Wed, Oct 28, 2009 at 09:14:22AM -0700, George Sanders wrote:
> 
> Yes, but I still won't know how to put the new version in _exactly the
> same place_ as the one I just removed.
> 
> For complex reasons of space and tools (embedded system, etc.) I do
> indeed need to use the source tarball.
> 
> So I'd like to know what configure directive to feed to it to properly
> and _exactly_ replace the existing FreeBSD default OpenSSL...

Not knowing anything more about ones "complex reasons", I suggest giving
serious consideration as to replacing the contents of
/usr/src/crypto/openssl/ with OpenSSL's distribution sources and see
what happens when one makes from /usr/src/secure/usr.bin/openssl/

But before doing that I think serious consideration should be made as to
making what ever embedded customizations one needs to the stock FreeBSD
distribution files. Make your changes then generate patch files as an
archive of the differences.

Or better yet create your own custom fork in CVS, but I don't know how
one would do that and still be able to sync with the official sources.
IIRC there are plans to move the official FreeBSD sources to Subversion,
which might complicate things. Have noticed in recent months cvsup often
must replace rather than update files because checksums do not match.
Guessing that has something to do with svn. http://svn.freebsd.org/

In years past I built a custom embedded FreeBSD out of FreeBSD 4.4 using
only a custom Makefile outside of the /usr/src tree to drive the whole
process. My built started with a clean checkout from my local CVS image
of the official distribution. Don't recall making any code changes that
couldn't be handled as compile defines from the Makefiles. Built into a
chroot space, including selected ports. Then working from a list of
utilities that I wanted in my reduced FreeBSD a script extracted library
dependencies to create another list. Finally a new directory tree was
created of the new system of only the files I wanted and their
dependencies. My system including kernel was under 10 MB. Plus another
10 or 15 MB for Apache, and another 10 MB or so for Perl. Kept a 500 MHz
P3 busy for a while.  :-)

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Re: need C help, passing char buffer[] by-value....

2009-10-20 Thread David Kelly
On Tue, Oct 20, 2009 at 05:42:41AM +0200, Polytropon wrote:
> Just a little and quite formal side note:
> 
> On Mon, 19 Oct 2009 11:09:19 -0700, Patrick Mahan  wrote:
> >while (*tp != '\0' && *tp++ != '<');
> 
> It's often a good choice, especially for increasing readability
> of code, to code the "empty statement" on a line on its own (as
> you usually put any statements on an own line for clarity), so
> the reader doesn't accidentally take it as and "end of command"
> notification, e. g.
> 
>   while(1)
>   ;
> 
> instead of
> 
>   while(1);

Agreed. I did exactly this in a code sample posted earlier in this
thread.

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Re: need C help, passing char buffer[] by-value....

2009-10-20 Thread David Kelly
On Tue, Oct 20, 2009 at 05:08:40AM +0200, Polytropon wrote:
> On Mon, 19 Oct 2009 08:58:05 -0500, David Kelly  wrote:
> > On Mon, Oct 19, 2009 at 05:43:44AM +0200, Polytropon wrote:
> > > to make sure s is not NULL, or testing for it explicitely like
> > > 
> > >   if(!s)
> > >   ... error handling here ...
> > 
> > You are missing my point that *s == 0 is not a good out of bounds
> > range check.
> 
> That's correct. Test != NULL just ensures that it is not a NULL
> pointer. Range checking should always be applied additionally.

Polytropon's "if(!s)" is testing for null pointer and thats a useful
test, but I'm testing for a pointer to a null which is something else.

Access through a null pointer should result in a memory violation core
dump.

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Re: need C help, passing char buffer[] by-value....

2009-10-19 Thread David Kelly
On Sun, Oct 18, 2009 at 11:30:49PM -0400, Robert Huff wrote:
> 
> Glen Barber writes:
> >  
> >  "//" comments are recognized by both C and C++.
> 
>   How about "... are recognized by both C++ and more recent versions
> of C."?

I think gcc++ and gcc use the same preprocessor? Comments are stripped
in the preprocessor.

The only thing we can really say is that gcc accepts // as a comment. Is
becoming an accepted convention in other C's but I doubt one can
universally state that its accepted in all "recent versions".

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Re: need C help, passing char buffer[] by-value....

2009-10-19 Thread David Kelly
On Mon, Oct 19, 2009 at 05:43:44AM +0200, Polytropon wrote:
> On Sun, 18 Oct 2009 22:23:43 -0500, David Kelly  wrote:
> > When not using a count to indicate how much data is in a char* you  
> > should always test for null. Testing for null is not a sure fire way  
> > to prevent buffer over runs but its better than nothing.
> 
> There are means like
> 
>   #include 
>   ...
>   assert(s);
> 
> to make sure s is not NULL, or testing for it explicitely like
> 
>   if(!s)
>   ... error handling here ...

You are missing my point that *s == 0 is not a good out of bounds range
check.

> is possible. Furthermore, it is a proven way to give a length
> argument along with the (char *) argument, such as the "new"
> l-functions for strings, e. g. strlcat() and strlcpy(), do.
> 
>   char *skiptags(char *s, int l);
> 
> You can even double-check for l begin != 0. Or you employ a
> test with strlen() function-internally.

strlen() knows nothing about the buffer allocation. As I originally
said, testing for null (and my example tested) is not foolproof but its
better than nothing. One should *also* test for the known end of the
allocated buffer.

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Re: need C help, passing char buffer[] by-value....

2009-10-18 Thread David Kelly


On Oct 18, 2009, at 8:33 PM, Gary Kline wrote:


Guys,

maybe this can't be done reading in a file with fgets(buffer[128],  
fp),

then calling skiptags(), conditionally, to while () past ',' and '>'.

I know I need to calll skipTags with its address, skipTags 
(&buffer);, but then how to i

handle the variable "s" in skipTags?  Anybody?


The skipTags() you wrote doesn't return its result.

Without actually trying it I think this will work:


// redo, skip TAGS
char *skipTags( char *s )
{
   if( *s == '<' ) {
   while( *s && ( *s++ != '>' ) )
;   // on a line of its own to make sure you see it
   }
   return s;
}

When not using a count to indicate how much data is in a char* you  
should always test for null. Testing for null is not a sure fire way  
to prevent buffer over runs but its better than nothing.


Use the above something like this:

char *buffPtr;

    buffPtr = skipTags( buffPtr );  //  advance over < > tags


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Re: network freebsd computers

2009-09-22 Thread David Kelly
On Tue, Sep 22, 2009 at 04:46:49PM -0400, Jerry McAllister wrote:
> On Tue, Sep 22, 2009 at 03:27:35PM -0400, Carmel NY wrote:
> 
> > I was just playing around with ssh. Would it be possible to store
> > multiple keys in the ~/.ssh/authorized_keys file?
> 
> It will put a key there for every place you go to with ssh.

I think this is the place one puts the public key of accounts (not the
host) from which one is *coming* from that one wishes to accept login
without further challenge.

~/.ssh/known_hosts automatically (prompted first time) records the host
public key of places you have been so as to warn you that the connection
is not to a previously known machine.

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Re: network freebsd computers

2009-09-22 Thread David Kelly
On Tue, Sep 22, 2009 at 03:29:43PM -0400, Carmel NY wrote:
> On Tue, 22 Sep 2009 14:08:21 -0500
> David Kelly  wrote:
> 
> [snip]
> 
> > It would, but he's approaching the problem with Windows-colored
> > glasses.
> 
> I am not sure what that is even suppose to mean, so I'll just ignore it.

It means you are trying to make Unix conform to your Windows habits. For
security, simplicity, and security (yes, "security" twice) we are not in
the habit of wantonly sharing our file systems. Historically remote
login has been difficult on Windows systems while file(system) sharing
has been relatively easy so Windows Administrators learned how to manage
systems by pushing files around on shared file systems. I'm saying it
sounds an awful lot like that is what you are trying to do. If so then
you will quickly find Unix doesn't like to let root (Administrator)
easily cross system boundaries.

Meanwhile others have listed a multitude of utilities for shooting files
across multiple machines, including simple terminal login and more
advanced GUI X11 login. None of which use shared file systems as their
core connection method.

Expanding on what I said earlier, if "joe" is userid 1001, do not reuse
1001 on any other machine unless "joe" has an account there too. Unix
file ownership is by userid and groupid *numbers*. The number doesn't
have to be defined in the password or group databases to be used. Most
file sync and archivers only use the numbers.

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Re: network freebsd computers

2009-09-22 Thread David Kelly
On Tue, Sep 22, 2009 at 02:53:17PM -0400, Jerry McAllister wrote:
> On Tue, Sep 22, 2009 at 02:48:58PM -0400, Carmel NY wrote:
> 
> > On Tue, 22 Sep 2009 12:25:38 -0600 (MDT)
> > Warren Block  wrote:
> > 
> > [snip]
> > 
> > > It's still a little unclear.  If you want the FreeBSD systems to 
> > > participate in the Windows networking, look at mount_smbfs and Samba.
> > 
> > I want to be able to access a FreeBSD box from another FreeBSD box. I
> > rarely access a Windows machine from FreeBSD as it is just easier to do
> > it the other way around.
> 
> Am I missing something or would ssh, scp and directing your Xwindows
> display from the headless machine to a desktop X server cover
> everything you are asking for?

It would, but he's approaching the problem with Windows-colored glasses.

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Re: network freebsd computers

2009-09-22 Thread David Kelly
On Tue, Sep 22, 2009 at 02:12:48PM -0400, Carmel NY wrote:
> 
> I can find a virtual cornucopia of information on networking Windows
> machines; Microsoft even includes a wizard to accomplish it. However,
> there does not seem to be as much information regarding non-Windows
> products.

Perhaps because it is *harder* to network Windows than Unix?

Skimming this thread something I would suggest that may be falling
through the cracks is to unify your user accounts across all the
machines. No matter that user "joe" isn't supposed to be using a
particular machine do not reuse joe's userid on that machine.

Also reconsider the need to share all filesystems across all machines.
A typical Windows "network application" often runs client-fileserver
rather than client-server. When one can not remotely login to a
single-user Windows machine, filesharing band-aids that issue.
Multi-user Unix systems trivially allow remote logins including ftp and
scp file copying.

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Re: network freebsd computers

2009-09-22 Thread David Kelly
On Tue, Sep 22, 2009 at 02:18:24PM -0400, Carmel NY wrote:
> On Tue, 22 Sep 2009 20:52:47 +0300
> Peter  wrote:
> 
> [snip]
> 
> > Maybe you are looking for this ?
> > 
> > http://www.freebsddiary.org/nfs.php
> 
> That article is quite dated. However, I will investigate it ASAP.

This isn't Windows where everything changes between every new release.
The fundamentals of NFS haven't changed much in 10 years.

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Re: reporter on deadline seeks comment about reported security bug in FreeBSD

2009-09-14 Thread David Kelly
On Mon, Sep 14, 2009 at 05:13:54PM -0400, ill...@gmail.com wrote:
> Am 2009/9/14 Dan Goodin  writhed:
> > Hello,
> >
> > Dan Goodin, a reporter at technology news website The Register. Security
> > researcher Przemyslaw Frasunek says versions 6.x through 6.4 of FreeBSD
> > has a security bug. He says he notified the FreeBSD Foundation on August
> > 29 and never got a response. We'll be writing a brief article about
> > this. Please let me know ASAP if someone cares to comment.
> 
> Has anyone submitted a PR about this?

Przemyslaw Frasunek has PR's posted but none recent. IMO if a PR is not
submitted then one has *not* informed the Powers That Be. Having said
that, for all I know there is a PR in the system that has been given
restricted access until its dealt with. IIRC there is an option where
one may request privacy when submitting a PR, perhaps that is the case
here?

Why is this in -questions? Seems -chat is more appropriate.

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Re: How to doc available?

2009-07-27 Thread David Kelly
On Mon, Jul 27, 2009 at 03:19:17PM -0400, Mikel King wrote:
> Anyone know of a good tutorial for making a system on a USB key in
> limited space? I have a project that requires enough of running system
> with lighttpd and php5 to do some network magick. I would like to keep
> the thing below 512MB but if that is not feasible then I'll shoot for
> whatever the smallest I can get away with.

Have you tried it yet? Once Upon A Time Not So Long Ago, 512MB was a
*huge* system disk.

And as others have pointed out much larger USB stick is cheap. So how
many hours are you willing to spend to save $12?

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Re: question

2009-07-17 Thread David Kelly
On Fri, Jul 17, 2009 at 10:28:16PM +0300, Giorgos Keramidas wrote:
> On Fri, 17 Jul 2009 10:51:57 -0700 (PDT), Zohreh  wrote:
> > Dear Sir/Madam 
> > ?
> > i have a question about free bsd and squid that?was?installed on it.
> > i insatlled squid 2.6 stabled 20 on freebsd 7. and i enabled firewall
> > on freebsd .  now i brows http sites on internet but i cannot brows
> > ftp site and i cannot pass pop3 through of my squid .  can you hlep me
> > , how to config squid and freebsd to pass ftp and pop3 ?  thank you
> > for your attention ? best regards zohreh ?
> 
> You seem to have blocked FTP access by tweaking the firewall ruleset.

Client side passive ftp can function through simple firewalls but
non-passive (which is *not* "active") requires very special handling.

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Re: 5000' ethernet?

2009-07-16 Thread David Kelly
On Thu, Jul 16, 2009 at 04:33:24PM -0400, Michael Powell wrote:
> David Kelly wrote:
> > 
> > Last sentences in last paragraph before See Also at
> > 
> http://en.wikipedia.org/wiki/Carrier_sense_multiple_access_with_collision_detection:
> > 
> > "Also, in Full Duplex Ethernet, collisions are impossible since data
> > is transmitted and received on different wires, and each segment is
> > connected directly to a switch. Therefore, CSMA/CD is not used on
> > Full Duplex Ethernet networks."
> 
> Aha! I did not know this (obviously). Learn something new every day...
> Maybe I'm getting too old for this line of work. The brain just isn't
> working the way it once did. I'm a big proponent of RTFM, but usually
> am looking at new material instead of forgetting stuff I read +20yrs
> ago. Thanks for setting me straight guys, it's better to be "in the
> know" than the other way around. Maybe time to retire.

I like my job but can think of a lot of other funner things to be doing.
There are a lot of trees out there with bark at handlebar height that
needs to be loosened with my dirtbike! Can't afford to retire until AAPL
hits $500.  :-)

As for RTFM read Lowell Gilbert's post in this thread where he points
out its mentioned in only one place in the docs that they were using the
term "CSMA/CD MAC" everywhere in the documentation no matter CSMA/CD
didn't apply when the MAC was configured Full Duplex.

So if you didn't fully grok the #include file you didn't have the proper
macro definitions to rewrite what they were saying into what they meant.
:-(

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Re: 5000' ethernet?

2009-07-16 Thread David Kelly
On Thu, Jul 16, 2009 at 02:49:11AM -0400, Michael Powell wrote:
> David Kelly wrote:
> 
> > Since when does one have CSMA/CD when configured as full duplex? All
> > full duplex ethernet connections are point to point, machine to
> > machine, or machine to switch. There is no multiple access on full
> > duplex. No chance of collision.
> 
> You are running Ethernet, right? CSMA/CD is part of the Ethernet
> framing protocol. It is present in the protocol independent of
> simplex/duplex, etc. As such the timing windows contain non-infinite
> discreet value ranges. It is integral to Ethernet and does not get
> 'switched off' or disappear just because a link is full-duplex. 

Please explain more. I have coded ethernet and TCP/IP on 68HC12NE64
embedded microcontrollers and in full duplex the MAC doesn't listen nor
wait before transmitting. There is no carrier detect but for the status
from the PHY indicating a wire is present.

> These physical parameters drive the limitations designed into the
> Ethernet protocol. There are maximum distances in fiber just as there
> are in copper. If we could simply ignore these things and do whatever
> we want why would they need exist in the first place? 

Because not all ethernets are full duplex.

Fiber transceivers are not "smart" devices the way switches are
semi-smart and routers are fully smart. What I've seen of fiber
transceivers they are no smarter than the old AUI to thick, thin, or
10baseT transceivers. So what is happening in your scenario where
ethernet over fiber works but will not work over copper due to "protocol
timing?"

> They exist because the propagation speed in the medium is not instantaneous. 
> This makes the problem time. The furthest apart two nodes can be located is 
> the time it takes for the smallest Ethernet packet to get from one end to 
> the other.

Why is the same not true with fiber?

> When a NIC transceiver is in the process of transmitting a packet it
> is also listening at the same time and calculating a CRC. It knows
> when a collision has occurred when the CRC does not match on both TX
> and RX. If they are too far apart in time, and both NICs key up at the
> same instant neither will ever know the collision has not yet
> occurred.

A collision can never occur full duplex. When full duplex is enabled the
receive verify function you describe is disabled.

> Both will assume no collision has occurred and queue up the next
> packet, and so on and so forth. The problem is time, and time is
> directly related to the propagation speed of the medium. 
> 
> This relationship to time is present in the Ethernet protocol. The
> misconception present is that "with full duplex there is no chance of
> collision" meaning that CSMA/CD is somehow magically turned off or
> excluded.

But it is turned off. A full duplex switch does not echo the sender's
bits back to the sender's receiver. A full duplex switch buffers the
incoming bits, reads the header, selects an output port, and then starts
sending the bits to that one port out of the FIFO. If it is a broadcast
packet then most cheap switches will wait until all ports are available
before sending the packet. Perhaps expensive switches will queue a copy
of the broadcast to each port.

Last sentences in last paragraph before See Also at
http://en.wikipedia.org/wiki/Carrier_sense_multiple_access_with_collision_detection:

"Also, in Full Duplex Ethernet, collisions are impossible since data is
transmitted and received on different wires, and each segment is
connected directly to a switch. Therefore, CSMA/CD is not used on Full
Duplex Ethernet networks."

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Re: 5000' ethernet?

2009-07-15 Thread David Kelly


On Jul 15, 2009, at 5:41 PM, Michael Powell wrote:


David Kelly wrote:

Not directly FreeBSD related, but how much of a chance is there  
that two

machines could communicate directly over 5,000 feet of cat5 with no
special hardware?

IIRC the classic ethernet problem limiting the distance between the
farthest points on a network had to do with timing and collisions. If
these two NICs are configured full duplex then it seems one would  
have

no idea how far away the other was due to timing issues.


No. Ethernet uses a protocol design called Carrier Sense Multiple  
Access
with Collision Detect, or CSMA/CD. The maximum lengths are indeed  
related to
timing and the timing is a direct result of the propagation delay  
in the
medium. The velocity factor will be some percentage of the speed of  
light.


Since when does one have CSMA/CD when configured as full duplex? All  
full duplex ethernet connections are point to point, machine to  
machine, or machine to switch. There is no multiple access on full  
duplex. No chance of collision.


So I'm thinking at 5,000' the problem is one of echo cancelation and  
signal loss, not one of ethernet protocol.


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Re: 5000' ethernet?

2009-07-15 Thread David Kelly


On Jul 15, 2009, at 9:25 PM, Olivier Nicole wrote:

The max distance for UTP is 328 ft. Divide the 5,000 by 328 and it  
will tell
you how many bridges, hubs, or switches you will need to  
regenerate the
signal. You may find devices purporting to 'range extenders', but  
even these

will have distance limitations requiring more than one. Foofaraw.


That would make 14 hub/switches. I think I remember that the number of
hubs is limited to 4 in between each end of the connection. I am not
sure it is true also for switches.


Hubs are simple analog repeaters. Switches are regenerative and  
buffered as the packet doesn't get resent until after the needed port  
is available.



In any case, have boxes of cat5 on order so as to find out myself.


You would need 5 boxes, the connections between each run of cable
could cause too many loss, even if the timing was not an issue.


Wire connections are not all that lossy.

Meanwhile cat5 is useful for other things after this project is over.


As suggested by others, I would go for wireless ad it is the easiers
to install if you have a line of sight.


Is my fault for not stating initially that the customer has ruled out  
any wireless option. Originally we were going to run a modest 50k bit/ 
sec wireless link.



Another solution, if you really don't need that much bandwidth, is to
request an ADSL connection at each location and establish some kind of
tunnel in-between the two boxes.


There are no phone lines at this location.


As suggested before you could consider fiber optic, you could order
a 2000 meters roll of underground outdoor fiber, with pig tail
installed at each end. For a temporary use, you should not need any
special precaution for installation: these fibers are usually shielded
to support a truck to running on it... Or you can get the type of
fiber designed for aerial usage, 8 shapped cable, including a
suspension cable, and run it from tree to tree; but it's much much
more installtion work, the cable tend to be heaviy...


Sources?


And you could get a couple of media converters (UTP to fiber) for
$1000.


Transceivers are easy to find. Matching cable has not been easy to find.


Don't be afraid by the cost of fiber optic, most of the cost is
labour to bury the fiber, it is not the cost of the cable
itself.


Not going to bury it. Is temporary for less than a week.

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Re: 5000' ethernet?

2009-07-15 Thread David Kelly
On Wed, Jul 15, 2009 at 10:27:35PM +0200, Michelle Konzack wrote:
> Hello David,
> 
> Am 2009-07-15 14:47:18, schrieb David Kelly:
> > Not directly FreeBSD related, but how much of a chance is there that two
> > machines could communicate directly over 5,000 feet of cat5 with no
> > special hardware?
> 
> I do not know hoe much a feet is in meters but AFAIK arround 0,3 which
> mean, you are talking about 1.5km or 1 mile ?

Yes, roughly a mile which is 5280 feet. Maybe less, but no more than a
mile. Won't really know until I get there and start running cable.

> There are inexpensive FiberOptic Transponder (I am using a bunch  of
> it from Transmode for my CWDM 1GE and DWDM 10GE network)
> 
> The 100 Mbit Transponder cost  arround  600 Euro  (each)  and  for
> your 5000 feets you need only  an  inexpensive  FiberOptic  cable.
> EVEN  the cheapes one would transfer 1 Gbit at this distance.

What I'm not (yet) seeing is a fiber optic transceiver listed with
matching fiber optic cable. The transceivers seem inexpensive vs the cost
of the cable.

> > Are there any particular range extenders you have used and would
> > recommend for making this task a sure thing on the first try?
> > Perhaps I should put an inexpensive ethernet switch at each junction
> > to serve as a regenerative repeater?
> 
> You have to use at least 3 Repeaters which NEED electricity. Do you
> know this?

Yes, of course.

> 5000 feet CAT5, 3 Repeater plus electric installation  cost  more,
> then the FiberOptic Cable with two Transponder.  And of course,  no
> one  can sniff traffic on FiberOptic and you have no worry about
> magnetic  fields disturbing your 5000 feet...

No one is going to sniff *this* one.

Am not finding sources of fiber optic cable as easily as I can find
fiber optic transceivers.

100baseT ethernet switches are about $25 each if one will serve as a
regenerative repeater.

Did I mention this is a temporary installation?

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5000' ethernet?

2009-07-15 Thread David Kelly
Not directly FreeBSD related, but how much of a chance is there that two
machines could communicate directly over 5,000 feet of cat5 with no
special hardware?

IIRC the classic ethernet problem limiting the distance between the
farthest points on a network had to do with timing and collisions. If
these two NICs are configured full duplex then it seems one would have
no idea how far away the other was due to timing issues.

100baseT uses lower power drivers than 10baseT, so perhaps 10baseT would
work better.

In any case, have boxes of cat5 on order so as to find out myself.

Are there any particular range extenders you have used and would
recommend for making this task a sure thing on the first try? Perhaps I
should put an inexpensive ethernet switch at each junction to serve as a
regenerative repeater?

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Re: you're not going to believe this.

2009-06-23 Thread David Kelly
On Tue, Jun 23, 2009 at 11:12:05PM +0200, Polytropon wrote:
> On Tue, 23 Jun 2009 15:59:44 -0500, David Kelly  wrote:
> > We are already there. SSDs are not slower than mechanical disk
> > drives, they are faster. The only detriments are 1) cost, 2) limited
> > write life.
> 
> What about power consumption? Because they seem to be primarily
> intended for portable devices, it should be better than "tradidional
> hard disks", but as I read, it's worse (less efficient, because higher
> current drain).

Don't think generic generalizations can be made this early in the life
of the technology. Shop for SSDs while looking at the properties that
interest you.

In general, reading is much faster than for mechanical HD. Also seek
time is nil. And read power consumption is low. A serious contender for
use in servers where lots of unchanging data is needed quickly. Probably
not as good of an idea for use in a mail server, but ideal for a web
server.

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Re: you're not going to believe this.

2009-06-23 Thread David Kelly
On Tue, Jun 23, 2009 at 01:10:41PM -0700, Gary Kline wrote:
> 
>   battery-backed ram sound great for the time being!
> 
>   if not now [this minute], then relatively soon, i'm guessing
>   within a few years somebody will have a solid-state device that emulates
>   the current mechanical technology.  it will wind up being considerably 
>   faster than the current drives and suck Much less juice.  

We are already there. SSDs are not slower than mechanical disk drives,
they are faster. The only detriments are 1) cost, 2) limited write life.

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Re: you're not going to believe this.

2009-06-23 Thread David Kelly
On Tue, Jun 23, 2009 at 09:46:01PM +0200, Wojciech Puchar wrote:
> >>and lifetime.
> >
> >Even a flash filesystem will have to do wear levelling.
> 
> yes - but it don't have to copy blocks that are free. with disk
> emulation - it doesn't know anything about filesystem and don't know
> what blocks are free.

If it is swapping from heavily used blocks to lightly used blocks then
"so what" if there is an "unnecessary" read/write? Perhaps its harder to
determine if unused than to simply move the data. I seem to recall
something like this in comments in the FreeBSD virtual memory manager in
6.0-RELEASE.

Don't want to leave the old data laying around for security reasons so
even if the blocks are unused the formerly heavily used blocks need to
be scrubbed.

As I originally said to Gary Kline, "Don't let someone scare you away
from the 99.8% solution waiting on the 99.9% solution."

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Re: What's happening

2009-06-23 Thread David Kelly
On Tue, Jun 23, 2009 at 05:28:51PM +0200, Jack Raats wrote:
> Can anyone explain this:
> 
> Jun 23 17:09:09 zeus kernel: fxp0: link state changed to DOWN
> Jun 23 17:22:25 zeus kernel: fxp0: link state changed to UP
> 
> What's causing this???

The wire was disconnected during that time. Possibly the hub/switch lost
power, or the modem was down.

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Re: you're not going to believe this.

2009-06-23 Thread David Kelly
On Tue, Jun 23, 2009 at 07:52:27AM -0700, Gary Kline wrote:
> On Tue, Jun 23, 2009 at 09:31:06AM +0200, Wojciech Puchar wrote:
> > 
> > today we have huge flash disks for really cheap, but still don't
> > have native flash filesystem in any OS, be it FreeBSD or windoze or
> > mac os x or whatever.
> > 
> > This flash chips have to emulate hard drive, which slows them down
> > manyfold
> 
> 
>   so is there any best guess regarding what timeframe a filesystem
>   for freebsd might exist?  on the you-tube demo they were using
>   [i think] XP.

Don't worry about it. Buy your SSD (Solid state Storage Device) and
mount with the noatime option. Don't let someone scare you away from the
99.8% solution waiting for the 99.9% solution.

As for "emulating a hard drive", its only slow relative to potential
FLASH speeds. Its fast relative to hard drive speeds. Writing may not be
as fast as a "real" HD, YMMV.

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Re: Opinion request about a file server

2009-06-05 Thread David Kelly
On Fri, Jun 05, 2009 at 06:16:49PM +0200, Wojciech Puchar wrote:
>
> >What i mainly try to achieve, talking in storage space, is 2 HDD of 1TB in
> >mirroring using gmirror(8) and 1 separate HDD of 500Gb.
> >
> >So do you think the system I've mentioned would handle the load? The server
> 
> 10 times more power than needed. disks speed is the only limit

I have a P-II at 400 MHz running as a file server. See about 5 MB/sec on
most file transfers. Has one of the original 15GB IBM Deskstar drives,
and a much slower 6 GB WD drive. Both on ATA16 interfaces.

I suspect network speed will determine the limits.

A modern SATA drive should be sequentially read or write at at least 80
MB/sec. while a 100M bit/sec ethernet will be limited to 11 MB/sec.
Latency of disk drive and network are usually the limiting factors, not
server CPU.

With gigabit ethernet one could reasonably expect to see 25MB/sec file
rates. Depends a lot as to how big the file, the bigger the faster.

Used smartctl just now to check, the Deskstar drive has 50331 hours of
run time, 5.7 years. Has only been power cycled 72 times. Run time seems
low as I have almost never turned this drive off since 2000.

The WD drive claims to have 1418293 hours of uptime. Know that is not
right.

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Re: Opinion request about a file server

2009-06-05 Thread David Kelly
On Fri, Jun 05, 2009 at 03:57:21PM +0300, Valentin Bud wrote:
> Hello community,
> 
>  I have an old computer (ASRock P4Dual-915GL) with Intel P4
> CPU at 3.0Ghz and 2Gb of RAM.
> 
>  I am asking the list maybe is somebody out there with a similar
> configuration and running FreeBSD on such a system as a File Server
> and Print Server using samba.
> 
>  What i mainly try to achieve, talking in storage space, is 2 HDD of
> 1TB in mirroring using gmirror(8) and 1 separate HDD of 500Gb.
> 
>  So do you think the system I've mentioned would handle the load? The
> server will be used by 4 people for storage of all sorts of files that
> can be found in Design and daily Office World (Photoshop, Illustrator,
> etc, Word Documents, etc).

I think its gross overkill for that very light load.

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Re: about restarting services

2009-06-04 Thread David Kelly
On Thu, Jun 04, 2009 at 09:40:16AM -0800, leonardo wrote:
> hello everybody:
> 
> I?m new to freeBSD, I want to know how I can restart the network services 

Start by creating a new email and addressing it to the list rather than
Reply-To another and edit it down. The two are not the same.

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Re: Open_Source

2009-06-03 Thread David Kelly
On Wed, Jun 03, 2009 at 08:32:38PM +0200, Wojciech Puchar wrote:
> 
> >A counter-example is VMS. It is a commercial product, but highly
> >reliable and secure.
> 
> At least is said too, i never used or even seen VMS.

When Digital Equipment Corporation collapsed, the architect(s) of VMS
went to Microsoft and were given NT to mold in their own likeness. This
is where rings of security levels originated in modern Windows.

http://en.wikipedia.org/wiki/Dave_Cutler

NT 3.5 and possibly 4.0 supported VMS-like versioned files as part of
the filesystem.

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Re: Stop in /usr/ports/lang/gcc43

2009-06-01 Thread David Kelly
On Mon, Jun 01, 2009 at 08:06:30PM +0200, Leslie Jensen wrote:
> 
> I can't get gcc43 to compile. I've deinstalled and reinstalled all its
> dependencies but it still fails.

Including perl? What version of perl do you have installed? I know it
builds with 5.8.9.

> In file included from ./tm.h:7,
>  from .././../gcc-4.3-20090531/gcc/gencheck.c:24:
> ./options.h:1101: error: redeclaration of enumerator 'OPT_w'
> ./options.h:1099: error: previous definition of 'OPT_w' was here
> ./options.h:1102: error: redeclaration of enumerator 'OPT_v'
> ./options.h:1100: error: previous definition of 'OPT_v' was here
> gmake[3]: *** [build/gencheck.o] Error 1
> gmake[3]: *** waiting for unfinished jobs...
> rm cpp.pod gcc.pod fsf-funding.pod gfdl.pod gcov.pod

See above? Its deleting .pod files which I believe are perl. Perl
*documentation* but still somehow related to perl.

There was something else the past month or two where I believe a
dependency for KDE could not build because it was finding its own older
version include files. That port had to be pkg_deinstall -f'ed before it
would build and install the new version. Then "pkgdb -fu" may or may not
have been required to force an update of the ports database.

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Re: Stop in /usr/ports/lang/gcc43

2009-06-01 Thread David Kelly
On Mon, Jun 01, 2009 at 08:06:30PM +0200, Leslie Jensen wrote:
> 
> 
> I can't get gcc43 to compile. I've deinstalled and reinstalled all its 
> dependencies but it still fails.
> 
> I'm on a 7.2-RELEASE system with all ports installed from a clean install.
> 
> The problem turned up when an update for fftw3 became available.
> 
> Apparently gcc43 is a new dependency for fftw3!
> 
> Any hints appreciated

Add this to /etc/make.conf. Worked for me:

WITHOUT_JAVA=1

Apparently to build Java one has to increase the size of some tables in
the kernel. I'd just as soon do without Java.

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Re: interrupt storm on irq 10

2009-05-27 Thread David Kelly
On Wed, May 27, 2009 at 09:30:19PM +0200, Wojciech Puchar wrote:
> 
> I'm not telling that you are wrong that cable produced this, but i
> can't find any explanation for that.

One two-port controller card, two drives, two cables. Interrupt storms
move from one port to the other with the suspect cable no matter which
drive is connected to that cable, no matter which port it is connected
to.

Two supposedly identical SATA cables purchased together. Will purchase
new cables to try tonight.

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Re: FreeBSD & Software RAID

2009-05-27 Thread David Kelly
On Wed, May 27, 2009 at 09:24:17PM +0200, Wojciech Puchar wrote:
> >I haven't looked at the ZFS code but this sort of thing is exactly why
> >all code I write uses int8_t, int16_t, int32_t, uint8_t, ... even when
> >the first thing I have to do with a new compiler is to work out the
> >proper typedefs to create them.
> 
> int, short and char are portable, only other things must be defined this 
> way.

No, they are not portable. "int" is 16 bits on many systems I work with.
char is sometimes signed, sometimes not. uint8_t is never signed and
always unambiguous.

> int8_t int16_t is just unneeded work. anyway - it's just defines, having 
> no effect on compiled code and it's performance.

No, they are not "just defines", I said "typedef". Typedef is subject to
stricter checking by the compiler.

Packing and alignment in structs is a big portability problem.

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Re: interrupt storm on irq 10

2009-05-27 Thread David Kelly
On Wed, May 27, 2009 at 12:51:45PM -0500, Andrew Gould wrote:
[...]

> Are interrupt storms a problem?  Do I need to worry about them?  If
> so, is there anything I can do about them?

Have run across interrupt storms for the first time myself last night.
Am thinking they are from interrupt sources that interrupt handlers do
not fully support. So the interrupt is not being serviced and is
repeatedly being invoked.

Probably PCI doesn't behave the same as much simpler embedded hardware
that I am used to, but the above is what an interrupt storm looks like
on simple embedded hardware.

My source of interrupt storms was caused by a bad SATA cable. Installed
a new VIA 6421-based SATA card (selected because it was only $15) and
two new hard drives for the purpose of copying files off two older
drives. New drives were detected but ad4 did not work when ad6 did.
Swapped drives and the other drive on ad6 worked. Thought the card was
bad but decided to try swapping cables which fixed ad4 and broke ad6.
Ergo, bad cable.

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Re: FreeBSD & Software RAID

2009-05-27 Thread David Kelly
On Wed, May 27, 2009 at 11:52:33AM -0500, Kirk Strauser wrote:
> On Wednesday 27 May 2009 11:40:51 am Wojciech Puchar wrote:
> 
> > you talk about performance or if it work at all?
> 
> Both, really.  If they have to code up macros to support identical
> operations (such as addition) on both platforms, and accidentally
> forget to use the macro in some place, then voila: untested code.

I haven't looked at the ZFS code but this sort of thing is exactly why
all code I write uses int8_t, int16_t, int32_t, uint8_t, ... even when
the first thing I have to do with a new compiler is to work out the
proper typedefs to create them.

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Re: FreeBSD & Software RAID

2009-05-25 Thread David Kelly
On Mon, May 25, 2009 at 07:09:15PM +0200, Wojciech Puchar wrote:
> >
> >I have looked at ZFS recently. Appears to be a memory hog, needs
> >about 1 GB especially if large file transfers may occur over gigabit
> >ethernet
>
> while it CAN be set up on 256MB machine with a little big flags in
> loader.conf (should be autotuned anyway) - it generally takes as much
> memory as it's available, and LOTS of CPU power.
> 
> with similar operations ZFS takes 10-20 TIMES more CPU than UFS and
> it's NOT faster than properly configured UFS. doesn't  make  any sense

It makes a certain degree of sense. Sometimes things have to be done
wrong for us to realize how good we had it before. How would we know how
great FreeBSD is if we didn't have Linux? I had to look at ZFS to decide
not to use it when I rebuild my storage this week due to a failing
drive.

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Re: FreeBSD & Software RAID

2009-05-25 Thread David Kelly
On Mon, May 25, 2009 at 07:37:59PM +0300, Valentin Bud wrote:
> On Mon, May 25, 2009 at 7:30 PM, Graeme Dargie 
> wrote:
> 
> > Can anyone with experience of software RAID point me in the right
> > direction please? I've used gmirror before with no trouble, but nothing
> > fancier.

[76 lines trimmed]

> I have been using ZFS for about half an year. I just have mirroring
> with 2 drives. Never had a problem with it. I would go with ZFS in the
> future too. And yes the server is in production and it has all sort of
> important data.

I have looked at ZFS recently. Appears to be a memory hog, needs about 1
GB especially if large file transfers may occur over gigabit ethernet
to/from other machines.

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ATA transfer block sizes in 7.2?

2009-05-19 Thread David Kelly
Back in 5.x or 6.x the maximum ATA transfer size was 127k or 128k as
witnessed with "systat -v" during big file reads or writes. In the later
versions of 6.x and now 7.2 this appears to be 63k or 64k.

Is there a reason for the smaller transfer size? It seems disk
throughput on my machine is limited by the number of transfers/sec less
than the bytes/sec.

Similar question: in addition to one "normal" drive I have two more
configured as a geom striped volume. Transfers seem to be limited to 43k
on these volumes. Am guessing the volume was allocated with the wrong
multiples of stripe size and/or started on the wrong block, or something
along those lines. I/O rates are about half what they were with same
hardware using vinum.

Think this is my current geom config, its dated March 2006:

drive a device /dev/ad4s1d
drive b device /dev/ad6s1d
volume stripe
plex org striped 279k
sd drive a
sd drive b

And believe this was my vinum config (dated Sept 2004):

drive vinumdrive1 device /dev/ad6s1d
drive vinumdrive0 device /dev/ad4s1d
volume vinum0
plex name vinum0.p0 org striped 558s vol vinum0 
sd name vinum0.p0.s0 drive vinumdrive0 plex vinum0.p0 len 319571622s
driveoffset 265s plexoffset 0s
sd name vinum0.p0.s1 drive vinumdrive1 plex vinum0.p0 len 319571622s
driveoffset 265s plexoffset 558s

S.M.A.R.T. reports one of my striped drives is failing, new drives are
in the mail as its also time for an upgrade. When I recreate the new
volume how might I optimize it for performance? Stick with geom, or
something else?

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Re: NIC

2009-05-04 Thread David Kelly
On Mon, May 04, 2009 at 04:31:16PM -0400, Robert Huff wrote:
> 
>   Conversely, cards based on RealTek chips have a reputation of
> being both inexpensive /and/ cheap.  (This may or may not be true of
> the wireless cards.)

The first generation of RealTek chips were little more than a shift
register and deserved a poor reputation for requiring a lot of CPU
resources. That got RT into market share and now have satisfactory
product.

>   The drivers for the Intel cards are written by Intel; I've got
> a dual-port Pro/1000 GT, and the thing is a _rock_.

Ditto. Intel NICs are exceptionally well supported. If one must run
Windows, an Intel NIC and Intel driver provide a lot of features which
are otherwise missing.

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Re: CD Burning

2009-04-21 Thread David Kelly
On Tue, Apr 21, 2009 at 12:50:47PM -0700, Christopher Chambers wrote:
> I have found that burning software is unable to detect my cdrom.

*What* burning software?

/usr/sbin/burncd should recognize the drive.

If you are trying to run cdrecord then you need "device atapicam" added
to your kernel config. Try "cdrecord -scanbus" to learn how cdrecord
names your device.

> I would assume that this is because acd0 is listed in fstab as
> read-only.

/etc/fstab is a File System Table used for mounting filesystems. You are
a ways off just yet in having a filesystem on acd0 to mount.

> I am just a little worried that changing it to rw might wreck a cd
> (already burnt) one day. Since cp or mv to /cdrom won't work, I guess
> my fear is unjustified hey?

The OS doesn't know how to write/append an ISO 9660 filesystem so there
would be no possibility of attempting an accidental write to CDROM.

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Re: Serial Communications

2009-04-03 Thread David Kelly
On Fri, Apr 03, 2009 at 11:44:36AM -0700, David Allen wrote:
> Sorry to have to ask a dumb question ...
> 
> I need to connect my notebook to another system using a serial
> connection.  Simple enough, but my notebook, unsurprisingly, has a USB
> port, but no serial.
> 
> Is there such a thing as a USB->DB9(M) null modem cable?  If not, would a
> USB->DB9 adapter stuck on one end of a null modem cable work?

Yes, its a smart adapter. I've had best luck using a 
"Keyspan High Speed USB Serial Adapter" model USA-19HS. About $31 at
Amazon.com and many other places.

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Re: utility that scans lan for client?

2009-03-23 Thread David Kelly
On Mon, Mar 23, 2009 at 03:41:55PM -0400, John Almberg wrote:
> On Mar 23, 2009, at 3:19 PM, David Kelly wrote:
> 
> >How about something as simple as "arp -a"? This lists the arp cache
> >of machines recently heard by your machine. If you know the IP
> >address of the machine in question and its not in your arp table,
> >ping it.  Then the MAC address will appear unless there is a router
> >between here and  there.
> 
> H'mmm. This is also very interesting.
> 
> nmap did not find this appliance, as it turns out. But arp -a did  
> found something on 192.168.1.107 (see below)
> 
> server1 (192.168.1.106) at 0:13:d4:45:45:31 on en1 [ethernet]
> server2 (192.168.1.107) at (incomplete) on en1 [ethernet]
> server3 (192.168.1.108) at 0:23:12:f8:5e:fd on en1 [ethernet]
> 
> I'm guessing this appliance (a Vonage phone adapter) is doing  
> something non-standard.

No, its just ignoring pings. An incomplete entry in the ARP table says
your machine tried to look up that address, creating an entry, but as of
the moment the table was read the reply had not yet come back.

Whatever router you are using is sure to have the Vonnage appliance in
its ARP table.

"Smart" network switches prevent your FreeBSD host from eavesdropping on
the ARP packet exchange between Vonnage and router. Otherwise it would
be in the arp table if the Vonnage has spoken recently to the router.

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Re: utility that scans lan for client?

2009-03-23 Thread David Kelly
On Mon, Mar 23, 2009 at 02:59:36PM -0400, John Almberg wrote:
> I've tried googling for this, but I guess I don't know the name of a  
> utility such as this...
> 
> What I'm looking for is a utility that can scan a LAN for attached  
> clients... i.e., computers that are attached to the LAN.
> 
> I have one box (an appliance that I have no access to), that is on  
> the LAN but I don't know what IP address it's using. I'd like to  
> complete my network map, and that is the one empty box on my chart.

How about something as simple as "arp -a"? This lists the arp cache of
machines recently heard by your machine. If you know the IP address of
the machine in question and its not in your arp table, ping it. Then the
MAC address will appear unless there is a router between here and there.

No need to be root.

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Re: renaming user account?

2009-03-18 Thread David Kelly
On Wed, Mar 18, 2009 at 11:27:39AM -0400, Joe Chimento wrote:
> Is there an easy way to rename a user account belonging to 'www' group?

vipw(8)

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Re: bsd vs gpl

2009-03-11 Thread David Kelly
On Wed, Mar 11, 2009 at 01:20:18AM -0700, prad wrote:
> i've not paid much attention to licensing philosophy i the past,
> because for me it was always windoze vs the goodguys.
> 
> however, recently i've become aware of there being a chasm within the
> goodguys in that the bsd attitude is do what you want as long as you
> give credit to the creator, whereas the gpl folks say do what you want
> as long as you keep it free.
> 
> is this a fair summation?

No, too simple.

The source code is always free under BSD, contrary to what GPL
proponents claim. Just that under BSD you are free to keep ownership of
your own work. To decide how *you* wish to distribute. You may limit the
redistribution of your work which includes BSD components. GPL people
seem to forget the base BSD code is still free, its just that they want
your enhancements too. Its a lesson in how to lie the way they claim
this is somehow "free" and/or "freedom."

GPL states that if you make changes those changes must be made available
under the same terms as the original source code. Yet somehow darlings
of the GPL world such as Red Hat, MySQL, and others, skirt around that
onerous requirement.

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Re: read BSD format disk from Mac OSX

2009-03-02 Thread David Kelly
On Mon, Mar 02, 2009 at 09:16:02AM -0500, Tsu-Fan Cheng wrote:
> Hi all,
> I format a ext disk (UFS) and transfer some files into it, hand it
> over to my friend who has a macbook. He complained the macbook can't
> read it. I don't have a mac on hand, I wonder if there is any utility
> that will help a mac to read a BSD, thanks!!

The easiest way to do what you are attempting is to format the disk FAT.
Then to preserve file attributes write your files in a tar archive.

MacOS X knows UFS but might not know how to decipher a FreeBSD disk
label. I haven't honestly tried. What I did do once was move a couple of
drives previously used as a vinum striped RAID to MacOS X. Was
frustrated that the MacOS Drive Utility would not allow me to create
another striped volume on those drives. What I found out was that the
drives had a Microsoft compatible disk label written by FreeBSD which
MacOS was happily honoring. Would happily put an HFS+ partition on the
drives. But MacOS X RAID had to be established at a lower level using a
Macintosh disk label.

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Re: lpr fixed, but the wrong-way... [?]

2009-02-06 Thread David Kelly
On Fri, Feb 06, 2009 at 11:17:13AM -0800, Gary Kline wrote:
> 
> % lpr /etc/fstab 
> 
> works.  from the apsfilter log, it lookas as tho i need to upgrade
> this libgs.so.8 shared library.  but *how* do i find who/what build
> this library?

% grep -l libgs /var/db/pkg/*/+CONTENTS

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Re: policykit fails to build on 7.1-stable i386

2009-02-03 Thread David Kelly
On Tue, Feb 03, 2009 at 09:41:19PM +, Anton Shterenlikht wrote:
> On Tue, Feb 03, 2009 at 02:48:24PM -0600, David Kelly wrote:
> > 
> > I think "portupgrade -f p5-XML-Parser" got me over the hurdle. There
> > was a file missing altho the port was installed. Forced it to build
> > and reinstall and things were able to build once again.
> 
> Actually, there's something else going on. I can build policykit on
> FBSD alpha 6.4-stable fine, but it fails on 8.0-current. I tried
> repeating download many times, it always goes fine on 6.4 but always
> fails on 8.0, of which I deduce that overloaded sourceforge is not to
> blame.

FYI: I'm still on 7.0-STABLE. Have/had KDE 4.1.1 and am now well on my
way to 4.1.4.

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Re: policykit fails to build on 7.1-stable i386

2009-02-03 Thread David Kelly
On Tue, Feb 03, 2009 at 01:36:19PM -0800, Rem P Roberti wrote:
> On 2009.02.03 14:48:24 +0000, David Kelly wrote:
> > 
> > I think "portupgrade -f p5-XML-Parser" got me over the hurdle. There was
> > a file missing altho the port was installed. Forced it to build and
> > reinstall and things were able to build once again.

[...]

> Deinstall/reinstall p5-XML-Parser

Thats what I said. "portupgrade -f p5-XML-Parser"

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Re: policykit fails to build on 7.1-stable i386

2009-02-03 Thread David Kelly
On Tue, Feb 03, 2009 at 11:21:23AM -0900, Mel wrote:
> On Tuesday 03 February 2009 07:49:29 Jason Morgan wrote:
> >
> > I am having the same problem (I posted a related question to the
> > list last night). Anything dealing with XML and docbook is failing
> > to build. I have managed to install a few of the problem ports by
> > adding the package instead, but when I left the house this morning,
> > yet another related package had failed.
> 
> Do it a few times in a row, the sourceforge servers are overloaded
> apparently and return false errors.
> Either that, or familiarize yourself with XML categories, download the
> file and update the XML cat file to use a local version rather then
> remote for that particular file.

Uh, tuning in late here. Also running portupgrade and had problems with
policy and XML stuff.

I think "portupgrade -f p5-XML-Parser" got me over the hurdle. There was
a file missing altho the port was installed. Forced it to build and
reinstall and things were able to build once again.

Portupgrade is still building so I can't get at my shell history to
verify.

Did something similar for the international library stuff.

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Re: Quantum tape drive

2009-01-28 Thread David Kelly


On Jan 28, 2009, at 4:47 PM, Warren Block wrote:

There's also the issue of terminator power, which may have been  
supplied by the old drive but not by the new one.



Yes, usually a jumper is available. Also used to be one-shot fuses  
before the Raychem self-reseting PTC Polyswitch fuses.


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Re: Quantum tape drive

2009-01-28 Thread David Kelly
On Wed, Jan 28, 2009 at 05:06:55PM -0500, Jaime wrote:
> On Wed, Jan 28, 2009 at 4:51 PM, Wojciech Puchar
> >
> > TERMINATION PROBLEM
> 
> I was thinking of that...  I shut down the server and checked the
> usual suspects (terminator on the cable, SCSI IDs, etc.) but didn't
> find anything out of place.  Also, the same command in Knoppix (Linux)
> using /dev/st0 (the Linux equivalent of /dev/sa0) appeared to write to
> the tape and then list the items on that tape.  I didn't see how long
> it would take, though.  In retrospect, maybe I should have let that
> run longer.  :(
> 
> How certain are you that its a termination problem?

I'm tending to "certainly" agree.

There are other things to consider as well, such as narrow, wide, ultra,
and ultra-LVDT. Active termination and passive termination.

Is there termination at the SCSI card?

You said there was termination on the cable, but is there also on-board
termination on the drive?

No other drive on the bus has termination enabled?

One terminator on each end of the bus, no more, no less.

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Re: Quantum tape drive

2009-01-28 Thread David Kelly
On Wed, Jan 28, 2009 at 03:49:39PM -0600, Dan Nelson wrote:
> In the last episode (Jan 28), Jaime said:
> > 
> > Thanks.  Would this decrease the ability of other Unixes being able
> > to read the tape?  For example, using pax (which can read tar
> > archives) or GNU's tar?
> 
> It shouldn't.  At worst you may have to specify a matching blocksize
> argument when reading.

I once had problems with an SGI user writing tapes with megabyte block
size. Works on ancient SGI IRIX but nowhere else that I know of.

Worse, IRIX remembered the last block size used on a tape device, across
multiple users. Learned to always set block size when writing else no
telling how it would go.

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Re: Quantum tape drive

2009-01-28 Thread David Kelly
On Wed, Jan 28, 2009 at 03:38:43PM -0500, Jaime wrote:
> >
> > In the last episode (Jan 28), Jaime said:
> >>   /usr/bin/tar -cvpX /usr/local/etc/backups/skiplist-relative.txt -f 
> >> /dev/sa0 -C / .

[...]

> Any other thoughts before I try to OS update and the larger block size?

You list -v as a tar option. Is tar sticking on a file?

Another question is whether or not tar could be getting caught in a hard
link or symbolic link infinite loop? Look for duplicates in the output.
uniq(1) should be of assistance. Perhaps uniq needs a sort(1) to
preprocess, I forget?

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Re: OT: .ape extension

2009-01-26 Thread David Kelly
On Mon, Jan 26, 2009 at 11:52:48PM +0100, Wojciech Puchar wrote:
> 
> 
> On Mon, 26 Jan 2009, David Kelly wrote:
> 
> >On Mon, Jan 26, 2009 at 11:39:19PM +0100, Wojciech Puchar wrote:
> >>is it any decruncher for unix for this format (it's compressed audio
> >>CD, from size i think it's kind of lossless compression)
> >
> >What does file(1) think it is?
> >
> don't think anything, says "data"

Monkey's Audio: http://www.monkeysaudio.com/

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Re: OT: .ape extension

2009-01-26 Thread David Kelly
On Mon, Jan 26, 2009 at 11:39:19PM +0100, Wojciech Puchar wrote:
> is it any decruncher for unix for this format (it's compressed audio
> CD, from size i think it's kind of lossless compression)

What does file(1) think it is?

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Solution: Re: [Trouble Ticket #190456] AutoReply: freebsd-questions Digest, Vol 246, Issue 39

2009-01-21 Thread David Kelly
# idiot autoresponder on freebsd lists, 1/21/2009
:0
* ^From:.*supp...@aebc.com
/dev/null

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Re: programs...

2009-01-09 Thread David Kelly
On Thu, Jan 08, 2009 at 11:03:29PM -0800, Gary Kline wrote:
>   
>   Guys,
> 
>   I've going to give away what I think could be at least a
>   multi-thousand dollar idea, something we nearly have already.
>   And a wish-list for a program that does not, AFAIK, exist.

Its called iTunes.

>   First, the wish-for:: given all the kinds of video and audio
>   programs that are now on the web, how difficult would it be
>   to have a GUI [interface] program pop up a screen with date of
>   airing, and/or date of podcast?  Not to exceed several hours
>   worth of recorded podcasts... or live recording.

iTunes will suck them down and has settings for when (if ever) to delete
old podcasts.

>   I can only give examples of thing I watch, but this will give
>   you some idea.  And bear in mind that at least FreeBSD cannot
>   capture some programs.  Like "FRONTLINE" on PBS.
> 
>   But for the sake of argument, let's say that firefox or
>   whatever browser or kmplayer or another player did have the
>   proper codecs.
> 
>   This GUI app  would find, fetch, and store in /usr/local/tmp
>   FRONTLINE, NOVA, "In Our Time" and "Everyday Ethics" [BBC],
>   and "Marketplace", Weekend, 10jan09.  

iTunes stores in ~/Music/iTunes/iTunes Music/Podcasts/

>   When these programs were safely in /usr/local/tmp/Pods, the
>   program would send mail or otherwise inform the user.

Script from cron to detect presence of a new file in the above, send
notification.

There are FreeBSD ports for subscribing to podcasts that could do the
same thing.

>   How doable is this...?  and, yes, i know that many of these
>   audio files can be subscribed to as podcasts.  I have several
>   on my Google page.  

Get A Mac!

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Re: Tool for traffic measure?

2009-01-02 Thread David Kelly


On Jan 2, 2009, at 11:21 PM, Sdävtaker wrote:


Hello,
I got a subnet with 5 machines and a cablemodem who provides 5  
public ips

All is conected to a switch.
One of the machines is not ours and we want to check it is not
abuseing our internet link, so we want to know if there is any way to
monitor bandwich usage from one of the other machines in the subnet
with no need to modify the foreing machine config. Something like use
tcpdump in promiscuos mode or something like that, we doesnt matter
the content, we just need a bandwich conssumption meassure.
Thanks for any ideas.


Buy a smarter switch and do the traffic counts in the switch.

As things stand the switch is isolating all 5 machines from each  
other, none hear what the others have to say to the cable modem, so  
there is no way you can sniff the other's traffic.


If instead of a switch you had a dumb hub then all machines would  
hear what all the other machines were saying to each other and the  
cable modem. Is very hard to buy a dumb hub these days. Is easier to  
buy a smarter switch. A configurable smart switch can deliver the  
questionable machine's traffic to both the cable modem and to one of  
your machines but there is no point unless you want/need to see the  
contents of the packets. A switch that smart should also be able to  
count packets and tally total byte counts. If I understand correctly  
that is all you want.


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Re: well, blew it... sed or perl q again.

2008-12-30 Thread David Kelly
On Tue, Dec 30, 2008 at 12:51:31PM -0800, Gary Kline wrote:
> On Tue, Dec 30, 2008 at 09:16:23PM +0100, Roland Smith wrote:
> > On Tue, Dec 30, 2008 at 11:31:14AM -0800, Gary Kline wrote:
> > >   The problem is that there are many, _many_ embedded 
> > >   "http://whatever> Site in my hundreds, or
> > >   thousands, or files.  I only want to delete the
> > >   "http://" lines, _not_ the other Href links.
> > > 
> > >   Which would be best to use, given that a backup is critical?
> > >   sed or perl?
> > 
> > IMHO, perl with the -i option to do in-place editing with backups. You
> > could also use the -p option to loop over files. See perlrun(1).
> > 
> > Roland
> 
> 
>   All right, then is this the right syntax.  In other words, do
>   I need the double quotes to match the "http:" string?
> 
>   perl -pi.bak -e 'print unless "/m/http:/" || eof; close ARGV if eof' *

In years past I used fetch(1) to download the day's page from a comic
strip site, awk to extract the URL of the day's comic strip, and fetch
again to put a copy of the comic strip in my archive. This application
sounds similar.

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Re: DVD cloning tool

2008-12-05 Thread David Kelly
On Fri, Dec 05, 2008 at 08:45:52PM +0100, Wojciech Puchar wrote:
> >
> >Agree that dd is good for simple CDs and DVDs but can't say that I know
> >it will behave on multi-session or multi-format discs.
> 
> the question was about DVD. dvd are not produced multisession or 
> multiformat.

The above is contradicted below. *These* DVDs in question are known not
multi-session?

> and when copying multisession data DVD, it's much better to copy off
> all files, possible add more and write as single session.

Depends on what your homework assignment is. In the data center I was
talking about one could make a good argument that the duplicate was to
be multi-session if the original was. We don't know for sure it doesn't
contain a presentation application or something counting on the multiple
sessions.

> actually it's rarely used. i never recorded even one multisession DVD
> except once to test if it works :)

On DVD-R it works badly, can only write 4 or 5 sessions and there is
some huge buffer zone between each session, 200 to 500 MB.

> with CD - you are right, but it was already told that readcd is OK.
> 
> unfortunately AFAIK there is no similar tool for DVDs

Thought readcd (out of cdrtools) also knew how to read DVD?

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Re: DVD cloning tool

2008-12-05 Thread David Kelly
On Fri, Dec 05, 2008 at 05:18:01PM +0100, Wojciech Puchar wrote:
> >
> >Thanks, dd is a good suggestion for ISO data. But what I need
> 
> once again please do
> man dd
> 
> dd reads sector by sector.
> 
> it won't work only for audio-sectors on CD , on DVD movies are stored 
> using "normal" 2K sectors

Agree that dd is good for simple CDs and DVDs but can't say that I know
it will behave on multi-session or multi-format discs.

In years past there was an issue where some drives would return EOF with
the last sector and others would wait until attempt to read past the
last sector yet would return data. So with multiple generations of copy
each generation got one block longer. Know this because 10 years ago
working in a data warehouse I easily won the argument against using
Windows to duplicate/distribute data on CD for lack of a disc verify
utility. These days the Disk Utility in MacOS X automatically verifies.
But back then under FreeBSD I used dd and handled EOF specially in my
shell script.

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Re: Regarding beer and optimal hacker productivity

2008-11-24 Thread David Kelly
On Mon, Nov 24, 2008 at 04:39:11PM -0500, Bill Moran wrote:
> In response to APseudoUtopia <[EMAIL PROTECTED]>:
> 
> > On Mon, Nov 24, 2008 at 2:03 PM, Bill Moran <[EMAIL PROTECTED]> wrote:
> > >
> > > I'm putting together a business case for beer at work ;)
> > 
> > http://xkcd.com/323/
> 
> Damn ... I thought it was something more realistic looking ...

There is hope yet. The Oracle of Undisputed Fact and Wisdom   :-)
http://en.wikipedia.org/wiki/Xkcd#Life_imitates_xkcd, says life often
imitates xkcd.

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Re: [OT] printing question

2008-11-18 Thread David Kelly
On Tue, Nov 18, 2008 at 07:51:47PM +0100, Roland Smith wrote:
> On Tue, Nov 18, 2008 at 10:49:44AM -0600, Andrew Gould wrote:
> > Time to buy a new printer.  I don't print much from FreeBSD; but the
> > need occasionally arises.  Most of my printing is done while using
> > Mac OS X.  The Epson Artisan 800 is looking awfully nice; but it's
> > not in the Linux printing database yet
> > (http://openprinting.org/printer_list.cgi).
> > 
> > Question:  Since Mac OS X uses CUPS, if I share the printer on the
> > Mac, will I need to worry about FreeBSD compatibility of the
> > printer?  I only need printing functions (not scan, etc) for the
> > FreeBSD computer.
> 
> I'm not sure that apple uses a non-modified CUPS. It is conceivable
> that they have incorporated extra (not open) drivers that aren't in
> the standard distribution.

MacOS X will share a printer with Windows. I don't know how the driver
thing is negotiated. The Mac may happily accept Postscript and then do
whatever is needed to print.

> If you want to be safe, buy a printer that understands PostScript.
> That will work on FreeBSD (and all other UNIX variants).

Sounds like the OP is looking for color. If B&W is enough my favorite
inexpensive printer is the Brother HL-5250DN. Speaks Postscript-clone,
PCL-5 and PCL-6. Direct network connection so each computer speaks
directly to the printer. Duplex. About 25 ppm. Third party toner reloads
cost about $25 for 5,000 pages. The printer sells for $150 to $250
depending on sales and whether you can find a refurbished unit.

Years ago I had access to an HP 5000N that would print photo quality
matte (not glossy) B&W on plain paper. Not quite sure what it is about
the Brother (or printer drivers because this was pre-MacOS X) but I
enjoyed wonderful cheap B&W prints off the HP but the Brother isn't
nearly as good. Text and line graphics are excellent.

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