Linux-Misc Digest #344, Volume #27 Mon, 12 Mar 01 15:13:01 EST
Contents:
xc problem (Steve Sayler)
Re: Ipchains vs Checkpoint vs CyberWall (John Hasler)
Re: Tar for backups - How big? (Jean-David Beyer)
Re: Memory and other hardware tests? (Jean-David Beyer)
OSS install problems (Andrew McGillis)
RPM difficulties (Andrew McGillis)
Re: Ipchains vs Checkpoint vs CyberWall (Vilmos Soti)
Re: How to release a DHCP lease from a Linux client (Jeremiah DeWitt Weiner)
Re: can't ssh except as root! (Jeremiah DeWitt Weiner)
Re: .profile file in Mandrake? (Michael Lee Yohe)
Re: switch OS without rebooting? (Michael Lee Yohe)
Re: CRC error b4 decompressing kernel? (Jeremiah DeWitt Weiner)
Re: Newbie: Video Modes (Aelbric)
Re: Free Linux account ("Chad Whitten")
Re: Small distro install from floppy? (Michael Lee Yohe)
Re: USB Scanner? (John Thompson)
Re: switch OS without rebooting? (John Thompson)
Re: Free ISP for Linux Users? (David Griffith)
Re: memory management (Mihai Cartoaje)
Re: CRC error b4 decompressing kernel? (Richard Kimber)
xawtv config file not applied ("IH")
Re: How to release a DHCP lease from a Linux client ("Eric en Jolanda")
Cannot uninstall RPM package: get memory alloc NULL (tome anticic)
----------------------------------------------------------------------------
From: Steve Sayler <[EMAIL PROTECTED]>
Subject: xc problem
Date: Mon, 12 Mar 2001 10:07:17 -0700
hello, a newbie to this group, and a newbie question
I have just inheritied a newly installed redhat linux box and some older
'xc' communications scripts, none seem to work, can you help?
one script calls xc like this:
/usr/local/bin/xc -lcua1 -s xxx_script
I suspect, that this is the old way of selecting the device file,
shouldn't it be /dev/??? instead of -lcua1???
thanks, in advance
steve
------------------------------
From: John Hasler <[EMAIL PROTECTED]>
Subject: Re: Ipchains vs Checkpoint vs CyberWall
Date: Mon, 12 Mar 2001 16:26:05 GMT
Stearns28 writes:
> How does IPCHAINS stack up against its counterparts in the Windows world
> like Checkpoint, CyberWall and others?
Linux firewalling is an integral part of the kernel, not a third-party
add-on.
> What features found in commercial packages that IPCHAINS lacks?
Backdoors.
> Also, is hardware firewall better that a software firewall?
There is no such thing as a hardware firewall.
--
John Hasler
[EMAIL PROTECTED]
Dancing Horse Hill
Elmwood, Wisconsin
------------------------------
From: Jean-David Beyer <[EMAIL PROTECTED]>
Subject: Re: Tar for backups - How big?
Date: Mon, 12 Mar 2001 12:21:52 -0500
Doug Poulin wrote:
>
> If I use tar for backing up data (maybe with -z for compression), and I
> have about 80GB to backup, what do you suppose the size of the
> compressed archive might be?
I would guess at least 40GB, depending on the degree of compression
you can achieve. In my experience, things like jpeg files do not
compress much if at all, binary files (i.e., programs) compress quite
poorly, databases do not compress well, and ordinary text files
compress very well, so it depends on what you are doint.
> Are there better compression tools I could
> use?
There probably are not any unless you are prepared to write a very
sophisticated compressor that can deal with the specific files you are
dealing with. That is seldom worth the trouble.
I use a tape drive that can optionally compress in hardware. That way,
I can use any tape writing program I choose to gather and organize the
backup files. If money is no object, get the BRU backup software
package, but if money matters, I suggest you seriously consider find
(man find) to get the files you want, and cpio (man cpio) to write
them onto the tape. I would avoid tar as there are too many problems
with error recovery.
>I know the size of the compressed archive is highly dependent, but
> even rough ideas would be fine.
>
> Thanks.
>
> While I'm at it, anyone have any luck with network attached storage and
> Linux?
I never tried it. I use nfs a little bit on my LAN (two machines), but
that is about it. I assume NAS looks like nfs to the clients, but I do
not really know.
--
.~. Jean-David Beyer Registered Linux User 85642.
/V\ Registered Machine 73926.
/( )\ Shrewsbury, New Jersey http://counter.li.org
^^-^^ 12:15pm up 9 days, 19:20, 3 users, load average: 2.00, 2.06,
2.07
------------------------------
From: Jean-David Beyer <[EMAIL PROTECTED]>
Subject: Re: Memory and other hardware tests?
Date: Mon, 12 Mar 2001 12:29:30 -0500
David wrote:
>
> Leonard Evens wrote:
> >
> > We have a dual boot system which runs okay in Linux in level 3 and
> > under Windows 98 in Safe mode. It boots under Linux in level 5 going
> > into X
> > or into Windows, but when you try to do anything it crashes and
> > reboots. I presume there is either a memory problem or a problem
> > with the video card.
> >
> > Where can I find a simple memory check program that is more rigorous
> > than the initial memory check when the machine is turned on?
>
> I haven't used it but, you might want to look here:
>
> http://www.desy.de/unix/linux/memtest/
I have used it on my big machine (512Megabytes ECC SDRAM) and my
machine passed the test after about 2 hours running time. It remains
to be seen by what the occasional flakyness is caused. A friend was
having trouble with his Windows machine, so we tried it and his memory
passed the test, too. We later determined that his hard drive was
failing worse and worse. Replacing his hard drive fixed his problem.
If you read about memtest86, it sounds like a good program. It does a
lot of testing, often with the refresh rate greately reduced to find
marginal problems.
>
> --
> Confucius say: He who play in root, eventually kill tree.
> Registered with the Linux Counter. http://counter.li.org
> ID # 123538
> Completed more W/U's than 99.106% of seti users. +/- 0.01%
"You have completed more work units than: 99.061% of our users.", so I
guess you have me beaten by a little bit.
--
.~. Jean-David Beyer Registered Linux User 85642.
/V\ Registered Machine 73926.
/( )\ Shrewsbury, New Jersey http://counter.li.org
^^-^^ 12:20pm up 9 days, 19:25, 3 users, load average: 2.20, 2.14,
2.10
------------------------------
From: [EMAIL PROTECTED] (Andrew McGillis)
Subject: OSS install problems
Date: 12 Mar 2001 17:27:03 GMT
Hey all,
I'm trying to install OSS for Linux... I get it unzipped and everything okay
according to the installation directions found at the OSS website, but when I
run "./oss-install" I get a blank console screen, and nothing happens. So I
wait... and still nothing happens. I'm using Corel Linux and my sound card is
an Ensoniq PCI card. What am I doing wrong?
Thanks in advance,
Andrew
------------------------------
From: [EMAIL PROTECTED] (Andrew McGillis)
Subject: RPM difficulties
Date: 12 Mar 2001 17:18:29 GMT
Hi all,
I have been having difficulty using RPMs in Corel Linux. I use Corel update
to make sure I have all of the libs required by the app I'm trying to install,
but Corel update tells me that there are conflicts, then I continue, and it
tells me there are missing libs. It then says "cannot convert rpm to debian
package" or something like that. How do I correct this?
Thanks,
Andrew
------------------------------
Subject: Re: Ipchains vs Checkpoint vs CyberWall
From: Vilmos Soti <[EMAIL PROTECTED]>
Date: Mon, 12 Mar 2001 17:35:48 GMT
[EMAIL PROTECTED] (Stearns28) writes:
> We are planning to set up a firewall for our network of about 50+ Win 9x
> stations, a couple NT servers and a dozens of RH Linux servers (database,
> email. web, ftp, etc.)
>
> Since the firewall will be on a server by itself, so it can be a Windows or a
> Linux. How does IPCHAINS stack up against its counterparts in the Windows
> world like Checkpoint, CyberWall and others? What features found in
> commercial packages that IPCHAINS lacks?
Also take a look at OpenBSD/ipf combo. They do an awesome packet filter
machine, too.
http://www.openbsd.org
http://coombs.anu.edu.au/~avalon
http://www.obfuscation.org/ipf
Vilmos
------------------------------
From: Jeremiah DeWitt Weiner <[EMAIL PROTECTED]>
Subject: Re: How to release a DHCP lease from a Linux client
Date: 12 Mar 2001 17:57:14 GMT
Eric <[EMAIL PROTECTED]> wrote:
> To be honest, I'm not surprised.
> I see the same behaviour on the local network I am on,
> even after shutting down a machine I can still find the host through
> nslookup.
That's because you're talking to the nameservers, not the host
itself. DNS doesn't care if the host is up or down.
> You cannot force the DHCP host to give you another address, and perhaps
> it's a faked DHCP anyway. You may well always get the same address.
You can't _force_ the DHCP server to give you a different address,
but you can definitely reject what it tries to send you, and it should offer
you a new one. A DHCP conversation looks (or can look) roughly like this:
Hey! I am 00:C0:4F:13:B9:BC - can I get an address? (DHCPDISCOVER)
How about 192.168.0.120? (DHCPOFFER)
Nah, I don't like that one. (DHCPDECLINE)
OK, how about 192.168.0.121? (DHCPOFFER)
OK, that one's good. May I have 192.168.0.121? (DHCPREQUEST)
Certainly - 192.168.0.121 is yours. (DHCPACK)
Whether that's something the user can control on his own is another
issue. Read RFC 2131 for the specs.
> Ask the network administrator what is going on, and why you get these
> problems, it's his/her job.
Well, that's one correct thing you've said. Packet-sniffing might
help him discover what's going on. Judging from the symptoms, I would have
said that it looks like two machines on the network have the same IP address.
This should show up in the logs, though.
JDW
------------------------------
From: Jeremiah DeWitt Weiner <[EMAIL PROTECTED]>
Subject: Re: can't ssh except as root!
Date: 12 Mar 2001 18:02:49 GMT
Carolyn Jean Fairman <[EMAIL PROTECTED]> wrote:
> I can now *telnet* as a regular user, by changing the resolve.conf to
> 744 and so that's a start. Ssh still hangs for some odd reason.
What output do you get when you run "ssh -v hostname"? That's always
step number 1 when you have ssh problems...
JDW
------------------------------
From: Michael Lee Yohe <[EMAIL PROTECTED]>
Subject: Re: .profile file in Mandrake?
Date: Mon, 12 Mar 2001 12:04:14 -0600
> When I was using SuSE 6.3 I put some startup commands a .profile file
> and placed it in my /home directory. These commands were executed when
> I logged in. Now I am using Mandrake 7.2 and tried the same trick but
> for some reason the file is not beign read. Doesn't Mandrake support
> the .profile file?
If you are using bash (default), then you should place your startup
commands in the ".bashrc" file - as bash 1.x is phased out and bash 2.x
(along with its new conventions) take over.
--
Michael Lee Yohe ([EMAIL PROTECTED])
Software Developer, Engineering Services
Red Hat, Inc.
------------------------------
From: Michael Lee Yohe <[EMAIL PROTECTED]>
Subject: Re: switch OS without rebooting?
Date: Mon, 12 Mar 2001 12:01:23 -0600
> Somewhere I heard of a way to switch from Linux to Win without
> rebooting. Is this possible? I suspected it might be a product by V-COM
> but I don't see anything on their site. Anyone know what I'm talking
> about?
You may want to look at http://www.plex86.org (formally FreeMWare) and
http://www.vmware.com. If you want to run simple Windows applications,
there is always Wine (http://www.winehq.com).
--
Michael Lee Yohe ([EMAIL PROTECTED])
Software Developer, Engineering Services
Red Hat, Inc.
------------------------------
From: Jeremiah DeWitt Weiner <[EMAIL PROTECTED]>
Subject: Re: CRC error b4 decompressing kernel?
Date: 12 Mar 2001 18:24:45 GMT
Andrew Purugganan <[EMAIL PROTECTED]> wrote:
> I get CRC error, system halted
> and I have to power off then on about 2 or 3 times before it finally
> gives in and lets the boot process continue. Any idea what is causing
> this, and how can I prevent a recurrence?
Are you overclocking? That's one of the ways my machine will
sometimes halt if I overclock.
JDW
------------------------------
From: Aelbric <[EMAIL PROTECTED]>
Subject: Re: Newbie: Video Modes
Date: Mon, 12 Mar 2001 18:30:11 -0000
I'm not sure if it's still available in RH 7, but RH6.x had a tool called
Xconfigurator that allowed you to make those kinds of changes from a
command prompt. Not sure what directory it is in. Helped me to fix a
resolution nightmare in setup. Watch your spelling, it starts with a
capital X. Check it out.
Lee wrote:
>
>
> The machine we have installed RH7 on a machine wit an on board Intel 815
> graphics set. Anyway, the RH installation did not give me choice of
> resolutions and has defaulted to 1280x1024 and the flickering gives me an
> instant headache.
>
> Could someone advise how I go about changing the res to 800x600.
>
> Cheers,
> TIA,
>
> Lee
>
>
--
Posted via CNET Help.com
http://www.help.com/
------------------------------
From: "Chad Whitten" <[EMAIL PROTECTED]>
Subject: Re: Free Linux account
Date: Mon, 12 Mar 2001 12:32:54 -0600
www.workspot.com
get an ssh shell account and a vnc desktop
"Alfred Schetelig" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]...
> Does anybody know of a free linux account offer on the WEB? Alfred
>
>
------------------------------
From: Michael Lee Yohe <[EMAIL PROTECTED]>
Subject: Re: Small distro install from floppy?
Date: Mon, 12 Mar 2001 12:11:34 -0600
> run a web server, perl, gui, and web browser. I don't really need
> anything else to run on it as it won't be hooked to a network and with
> only 8Mb RAM and a 270Mb hard drive, it will be pushing the machine to
> do what I want. Thanks.
>
> Stan McCann
There is a distribution of Linux called "PeeWee" Linux that is targetted
for ultra-small platforms while maximizing usability. The neat thing is
that's modern and based off tested Red Hat distributions - not just a built
from scratch distribution. They're target platform is around 64MB (for a
flash card). So, it should do nicely for you.
http://embedded.adis.on.ca/
--
Michael Lee Yohe ([EMAIL PROTECTED])
Software Developer, Engineering Services
Red Hat, Inc.
------------------------------
From: John Thompson <[EMAIL PROTECTED]>
Subject: Re: USB Scanner?
Date: Mon, 12 Mar 2001 08:16:44 -0600
John Scudder wrote:
> Will a USB Scanner work under Linux?
Some do. My Epson 636U works fine in linux using the "sane"
package.
--
-John ([EMAIL PROTECTED])
------------------------------
From: John Thompson <[EMAIL PROTECTED]>
Subject: Re: switch OS without rebooting?
Date: Mon, 12 Mar 2001 08:14:42 -0600
Potter Wickware wrote:
> Somewhere I heard of a way to switch from Linux to Win without
> rebooting. Is this possible? I suspected it might be a product by V-COM
> but I don't see anything on their site. Anyone know what I'm talking
> about?
VMware and Win4lin are commercial products that allow you to boot
and run Windows from a virtual machine running in linux. Wine is
a linux implementation of Windows API's to allow Windows
executables to run directly from linux.
--
-John ([EMAIL PROTECTED])
------------------------------
From: David Griffith <[EMAIL PROTECTED]>
Subject: Re: Free ISP for Linux Users?
Date: Mon, 12 Mar 2001 18:37:27 +0000
"f@m4ma" wrote:
> If you're in the UK try freeserve :)
>
> J Garcia wrote:
>
> > I am looking for a free ISP for Linux users just like
> > NetZero is available for Windows users. Anybody know
> > if there is one? Thanks a lot.
> >
> > __________________________________________________
> > Do You Yahoo!?
> > Yahoo! Auctions - Buy the things you want at great prices.
> > http://auctions.yahoo.com/
If you can put up with waiting to connect every time
ATDT08440402001
BUSY
ATDT08440402001
BUSY
ATDT08440402001
BUSY
etc
------------------------------
From: Mihai Cartoaje <[EMAIL PROTECTED]>
Subject: Re: memory management
Date: Mon, 12 Mar 2001 18:38:19 GMT
[EMAIL PROTECTED] wrote:
> Why not use Slackware????
Up until this weekend, I didn't have a Slackware CD. A friend burned one for me
and I am planning to reinstall. Maybe I'll followup with a comparison of
Slackware vs. VectorLinux for efficiency in memory management.
Mihai
------------------------------
From: Richard Kimber <[EMAIL PROTECTED]>
Subject: Re: CRC error b4 decompressing kernel?
Date: Mon, 12 Mar 2001 18:38:37 +0000
Jeremiah DeWitt Weiner wrote:
> Andrew Purugganan <[EMAIL PROTECTED]> wrote:
>
> > I get CRC error, system halted
What system do you have? Is it new?
> > and I have to power off then on about 2 or 3 times before it finally
> > gives in and lets the boot process continue. Any idea what is causing
> > this, and how can I prevent a recurrence?
>
> Are you overclocking? That's one of the ways my machine will
> sometimes halt if I overclock.
I sometimes get this, though it goes away after a reset. I am not
overclocking. It's a standard Intel 933 with Intel 815 board.
I wondered if it signified a hardware, possibly memory, problem?
-Richard.
--
Richard Kimber
[EMAIL PROTECTED]
http://www.psr.keele.ac.uk/
------------------------------
From: "IH" <[EMAIL PROTECTED]>
Crossposted-To: comp.os.linux.x,comp.os.linux.x.video
Subject: xawtv config file not applied
Date: Mon, 12 Mar 2001 19:03:53 GMT
Hi,
I am using xawtv 3.37 on Mandrake Cooker (8.0 beta). My config file setup
is
near the bottom.
My problem is that the norm, input and pixsize don't work on load.
I spent a lot of time at first just trying to figure out why the startup
would say:
config: invalid value for norm: ntsc
well after ardious effort - looking through deja, man-pages, howtos, etc,
the source code - I finally figured out that it was because I had a space
after the ntsc value in my .xawtv file. Gotta love white space =(.
Now the program doesn't complain about invalid values but
when it first loads up I always have to set the video source and
TV norm values. Any ideas?
The documentation is also wrong I think in the man page specifies that
the values for input are television where in fact that is invalid and it
should be tunner.
Thanks in advance,
[global]
freqtab = us-cable
#pixsize = 128 x 96
pixsize = 446 x 336
pixcols = 1
jpeg-quality = 75
mjpeg-quality = 50
keypad-ntsc = no
osd = yes
[defaults]
capture = overlay
norm = ntsc
input = tuner
[KCPQ]
channel = 28
key = 3
------------------------------
From: "Eric en Jolanda" <[EMAIL PROTECTED]>
Subject: Re: How to release a DHCP lease from a Linux client
Date: Mon, 12 Mar 2001 21:02:30 +0100
> > To be honest, I'm not surprised.
> > I see the same behaviour on the local network I am on,
> > even after shutting down a machine I can still find the host through
> > nslookup.
>
> That's because you're talking to the nameservers, not the host
> itself. DNS doesn't care if the host is up or down.
>
Okay, so why not?
Point me to some info here, I lack the basics on this stuff.
A good read would be nice.
What point is there in receiving an ip-address, formerly belonging to a
host,
from a nameserver, when the host is gone from the network?
> > You cannot force the DHCP host to give you another address, and perhaps
> > it's a faked DHCP anyway. You may well always get the same address.
>
> You can't _force_ the DHCP server to give you a different address,
> but you can definitely reject what it tries to send you, and it should
offer
> you a new one. A DHCP conversation looks (or can look) roughly like this:
> Hey! I am 00:C0:4F:13:B9:BC - can I get an address? (DHCPDISCOVER)
> How about 192.168.0.120? (DHCPOFFER)
> Nah, I don't like that one. (DHCPDECLINE)
> OK, how about 192.168.0.121? (DHCPOFFER)
> OK, that one's good. May I have 192.168.0.121? (DHCPREQUEST)
> Certainly - 192.168.0.121 is yours. (DHCPACK)
>
> Whether that's something the user can control on his own is another
> issue. Read RFC 2131 for the specs.
I figured this much, wasn't sure about it though.
I'm pretty much sure that in our local network though (which may be a
special case)
some PC's will never get another IP-address. Whatever negotiation they
start.
Eventhough other PC's do use DHCP and don't have a fixed IP-address.
Some kind of fixed tables are used for these PC's.
So what I'm saying here actually is that any network may behave differently,
and therefor, ask the administrator.
> > Ask the network administrator what is going on, and why you get these
> > problems, it's his/her job.
>
> Well, that's one correct thing you've said.
Gee, thanks for the kind words.
Eric
------------------------------
From: tome anticic <[EMAIL PROTECTED]>
Crossposted-To: comp.os.linux
Subject: Cannot uninstall RPM package: get memory alloc NULL
Date: Mon, 12 Mar 2001 20:41:19 +0100
Hi!
Any help would be appreciated with the following problem:
I try to uninstall a package using
rpm -e package
But after a while I get "memory alloc returned NULL" wiuth the package
in place.
Can anybody tell me how to solve this problem?
--
Tome Anticic
Rudjer Boskovic Institute
Department of Experimental Physics
Bijenicka 54
10000 Zagreb
CROATIA
Phone: 385-1-4561-028
Fax: 385-1-4680-239
------------------------------
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End of Linux-Misc Digest
******************************
