Linux-Misc Digest #850, Volume #27 Sun, 13 May 01 22:13:01 EDT
Contents:
Strange "hangings" after IO! (Paulo da Silva)
Re: about nameservers (David Efflandt)
How to install debian kde_2 (Martin Drautzburg)
NYC LOCAL: Wednesday 16 May 2001 NYLUG: Kirrily 'Skud' Robert on the e-smith Server
& Gateway ([EMAIL PROTECTED])
Interpreting output of "uptime" (Mario Husand)
Re: mail sends, but does not receive ("Peter T. Breuer")
Re: Interpreting output of "uptime" (Ian Northeast)
Re: chown to another user (give a file away). (SammyTheSnake)
Re: Interpreting output of "uptime" (Mario Husand)
Re: Linux in college & high school (somebody)
Re: Linux in college & high school (Dave Martel)
Re: Linux in college & high school (Dave Martel)
Re: mail sends, but does not receive (MH)
Re: mail sends, but does not receive ("Steve Weiss")
Re: mail sends, but does not receive (MH)
Re: Linux in college & high school (Mudshark)
permission denied? (marshall)
----------------------------------------------------------------------------
Date: Sun, 13 May 2001 22:08:04 +0100
From: Paulo da Silva <[EMAIL PROTECTED]>
Crossposted-To: comp.os.linux.setup
Subject: Strange "hangings" after IO!
Hi,
SYMPTOMS:
After an IO operation (ex. copying a directory)
more or less intense, the system seems to hang
immediately (to 2 seconds sometimes) after the
IO "operation" completion for a period from
1, 2 or more seconds depending (I think) from
the amount of data written/read. When this occurs,
the system stops even echoing to the console although
it bufferizes the input chars.
KERNEL: 2.4.3
ENVIRONEMNT:
I'm installing a new linux from scratch.
I have all, but a couple of things like scanner,
cdrw, installed and working properly.
X, KDE, Printer, Sound, ... everything seems
to work fine.
In my previous distributions Linuxes I never had
such a problem.
This is the first time I'm using the kernel 2.4.3.
==================================================
This problem is particularly annoying when listening
MP3. The sound stops. It seems the windows :-)
Can someone help me please?
TIA for any comments or help.
Paulo da Silva
--
Please remove the anti-spam Xs from my email address.
PF. retirar os Xs anti-spam do meu endereco de email.
------------------------------
From: [EMAIL PROTECTED] (David Efflandt)
Subject: Re: about nameservers
Date: Sun, 13 May 2001 21:21:01 +0000 (UTC)
Reply-To: [EMAIL PROTECTED]
On Mon, 14 May 2001 03:29:31 +0800, Lucas <[EMAIL PROTECTED]> wrote:
> Some days ago I have updated my domain information
>
> I added some more nameservers liked
> ns1.mydomain.com with internet address 111.222.333.444
> ns2.mydomain.com with internet address 111.222.333.444
> ns3.mydomain.com with internet address 111.222.333.445
> ns4.mydomain.com with internet address 111.222.333.446
>
> to mydomain.com via Network Solution
>
> I have machines that use the IP 111.222.333.445 and 111.222.333.446, but I
> did not do any settings to them.
>
> but yesterday I find the mydomain.com can't be connected at all suddently
> because I did not do any settings to my DNS, so I just wanna ask that, would
> it be the problem of that I added the 2 more nameservers liked
> ns3.mydomain.com and ns4.mydomain.com??
If you are going to use false names and numbers, we cannot help you with
any specific answers. Are all 4 nameservers properly configured? If you
use each specific nameserver like:
nslookup - 111.222.333.444
Can it find its own name and respond properly to queries?
--
David Efflandt (Reply-To is valid) http://www.de-srv.com/
http://www.autox.chicago.il.us/ http://www.berniesfloral.net/
http://cgi-help.virtualave.net/ http://hammer.prohosting.com/~cgi-wiz/
------------------------------
Subject: How to install debian kde_2
From: Martin Drautzburg <[EMAIL PROTECTED]>
Date: 14 May 2001 00:07:56 +0200
I have a CD with a bunch of .deb files and Packages.gz. Where do I go
from here (other than installing them one by one in the correct order
with dpkg -i file) ?
------------------------------
From: [EMAIL PROTECTED]
Crossposted-To: comp.os.linux.advocacy,comp.unix.bsd.freebsd.misc
Subject: NYC LOCAL: Wednesday 16 May 2001 NYLUG: Kirrily 'Skud' Robert on the e-smith
Server & Gateway
Date: 13 May 2001 17:32:13 -0400
<blockquote
edit-level="light">
*** New York Linux Users Group May 2001 Meeting ***
- NYLUG.org -
e-smith Server and Gateway Distribution
Presented by Kirrily Skud Robert
5/16/2001
Wednesday
6:30pm-8:00pm
IBM Headquarters Building
590 Madison Avenue at 57th Street
Check in at lobby for badge and room number
====================================================================
The e-smith server and gateway distribution is an all-in-one network access
and collaboration solution aimed at small to medium enterprises, built
under Linux and released under the GPL. It combines a non-techie web
management interface with a geek-friendly modular/extensible architecture
under the hood.
Services include (but are not limited to): gateway, firewall, mail, web,
FTP, file, print, VPN and DHCP. Kirrily Skud Robert will take us on a tour
of e-smith, exposing all the bits they go to so much trouble to hide from
the technology-fearing general public.
Kirrily presented a paper about e-smith at linux.conf.au, and wrote a
feature article about Perl and e-smith for perl.com.
http://www.e-smith.org
http://www.e-smith.com/pdfs/e-smith_v4.1_datasheet.pdf
http://www.infotrope.net
http://infotrope.net/writing/content/e-smith-slides/t1.html
http://infotrope.net/writing/content/e-smith-paper/e-smith-paper.html
http://www.perl.com/pub/2001/02/esmith.html
Kirrily Skud Robert factlets from the 'net...
* Founder of the Melbourne (Australia) Perlmongers
* Editor at Freshmeat from January to July 2000
* Member and contributor, Open Source Writers Group
http://oswg.org/
She has also contributed to the sparse body of knowledge about female
geeks.
http://www.slashdot.org/features/98/11/24/0941201.shtml
Stammtisch:
And then after the meeting... Join us around 8:15pm or so at the Typhoon
Brewery & Restaurant located at 22 East 54th Street between Madison and
5th Aves.
http://www.typhoonbrewery.com/
Please see our home page at http://www.nylug.org for the HTMLized version
of this announcement, complete with graphics and additional hyperlinks to
related information.
May 2001 - The New York Linux Users Group, NYLUG.org
Thanks to Ron Guerin for preparing these announcements.
===============================================================
Jim Gleason VA Linux Systems
email: [EMAIL PROTECTED] http://www.valinux.com
phone: 212-858-7684 President, New York Linux Users Group
fax: 212-858-7685 http://www.nylug.org
===============================================================
</blockquote>
Distributed poC TINC:
Jay Sulzberger <[EMAIL PROTECTED]>
Corresponding Secretary LXNY
LXNY is New York's Free Computing Organization.
http://www.lxny.org
------------------------------
From: Mario Husand <[EMAIL PROTECTED]>
Subject: Interpreting output of "uptime"
Date: Sun, 13 May 2001 23:31:57 +0200
Hi
>uptime 11:32pm up 17 days, 12:09, 1 user, load average: 0.00, 0.00, 0.00
I'm not sure about the "load average"-part ?
man tells me : the sys�tem load averages for the past 1, 5, and 15 minutes.
But: measured in what ? Percentage ? How can it then be above 1.0 ?
--
Mario Husand
Mail an [EMAIL PROTECTED] muss im Betreff "Re" enthalten sowie
kleiner als 1 MB sein, sonst greift der Spamschutz =)
------------------------------
From: "Peter T. Breuer" <[EMAIL PROTECTED]>
Subject: Re: mail sends, but does not receive
Date: Sun, 13 May 2001 23:30:55 +0200
MH <[EMAIL PROTECTED]> wrote:
> Peter T. Breuer wrote:
> <snip>
>> "denied"? Please show the comamnd and the result, as you did above.
>> Monitor what happens on ZEUS at the same time.
> telnet: Unable to connect to remote host: Connection refused
OK. You would need to get out tcpdump to see if it had been firewalled
or foiled by tcpwrappers.
>> If you get no answer on port 25, try some other ports. The telnet port
>> or the echo port. You have to establish first that ZEUS is reachable
>> via at least some tcp protocols/services.
>>
> Yes, ZEUS is reachable. To be clear, ZEUS is actually my workstation. I
> have my server (and my workstation) configured to mail me messages (from
> cron) when a specific event (backup) occurs. This was working prior to
> ugrading to RH 7.1 which is when I stopped receiving messages from my
> server. Mail is working locally, it's just not accepting from remote hosts
> (same network).
It looks pretty clear that it's either a frewall or tcpwrappers.
Sendmail also might have an accept list - what version is it?
Peter
------------------------------
From: Ian Northeast <[EMAIL PROTECTED]>
Subject: Re: Interpreting output of "uptime"
Date: Mon, 14 May 2001 00:14:21 +0100
Mario Husand wrote:
>
> Hi
>
> >uptime 11:32pm up 17 days, 12:09, 1 user, load average: 0.00, 0.00, 0.00
>
> I'm not sure about the "load average"-part ?
>
> man tells me : the sys�tem load averages for the past 1, 5, and 15 minutes.
>
> But: measured in what ? Percentage ? How can it then be above 1.0 ?
The load averages are the average number of processes which were in a
runnable state but waiting for CPU over the periods of time you quote.
Start 5 loops and you will see the load average go up towords 5.
Thus there is really no upper limit on them (I have seen 250 but the
machine in question was struggling by then).
A common rule of thumb is that the load average should be below
5*#processors for interactive use or 10*#processors for batch. For
really snappy workstation response you should aim to keep it below 1 on
a single processor machine. You do not appear to have a problem here:)
Regards, Ian
------------------------------
From: [EMAIL PROTECTED] (SammyTheSnake)
Subject: Re: chown to another user (give a file away).
Date: Sun, 13 May 2001 23:10:51 +0100
In article <9dhhu9$ie7$[EMAIL PROTECTED]>, Jeremiah DeWitt Weiner wrote:
>SammyTheSnake <[EMAIL PROTECTED]> wrote:
>> another reason is because it would otherwise be possible to do something
>> like this
>
>> echo -en "echo \"hahaha! I'm you!\" \n rm -rf ~" > a.file
>> chmod u+s a.file
>> chmod a+rx a.file
>> chown enemy.enemysgroup a.file
>> ./a.file
>
>
> No, it wouldn't. Linux ignores the setuid bit on shell scripts, which
>is what that is. Anybody who tried that would get hoist by his own petard,
>as they say.
gosh, never knew that...
I can't really see why, though, if you can make a shell script to do your
dirty work, you can do exactly the same with a C program...
Cheers & God bless
SammyTheSnake
--
Sam.Penny @ Ntlworld.com | Looking for a computer related
Linux, Hardware & Juggling specialist :-) | job, if you can help, e-mail me :)
Wheels: bike, 'ickle bike, and unicycle. | /o \/ Working on 5 ball 1/2 shower
Boxen: K6-266@300, dual Celery500 & Nx486 | \__/\ & some 6 / 7 ball exercises
------------------------------
From: Mario Husand <[EMAIL PROTECTED]>
Subject: Re: Interpreting output of "uptime"
Date: Mon, 14 May 2001 00:26:42 +0200
"Ian Northeast" <[EMAIL PROTECTED]> :
: The load averages are the average number of processes which were in a
: runnable state but waiting for CPU over the periods of time you quote.
: A common rule of thumb is that the load average should be below
: 5*#processors for interactive use or 10*#processors for batch.
Thanks
Is there any way to determine the CPU-usage in a slightly better way ?
I'm thinking of something like
ps -eo %C
and a script adding the output together.
Another related question:
Do you know what
>cat /proc/loadavg
0.00 0.00 0.00 1/59 11084
the 1/59 and the increasing last number means, too ?
Dear,
--
Mario Husand
Mail an [EMAIL PROTECTED] muss im Betreff "Re" enthalten sowie
kleiner als 1 MB sein, sonst greift der Spamschutz =)
------------------------------
From: somebody <[EMAIL PROTECTED]>
Crossposted-To: comp.os.linux.advocacy
Subject: Re: Linux in college & high school
Date: Sun, 13 May 2001 22:48:21 GMT
Craig Kelley <[EMAIL PROTECTED]> stands accused of saying:
>Well, MacOS X is simply Apple's version of Linux.
is freebsd simply freebsd's version of Linux?
------------------------------
From: Dave Martel <[EMAIL PROTECTED]>
Crossposted-To: comp.os.linux.advocacy
Subject: Re: Linux in college & high school
Date: Sun, 13 May 2001 17:29:07 -0600
On Sun, 13 May 2001 22:48:21 GMT, somebody <[EMAIL PROTECTED]> wrote:
>Craig Kelley <[EMAIL PROTECTED]> stands accused of saying:
>
>>Well, MacOS X is simply Apple's version of Linux.
>
>is freebsd simply freebsd's version of Linux?
No, FreeBSD is the Universtiy of California, Berkeley's version of
Unix. Linux is Linus Torvald's version of Unix. However, because
they're both clones of the same thing, the same software can be
compiled to work under either as well as on Unix.
------------------------------
From: Dave Martel <[EMAIL PROTECTED]>
Crossposted-To: comp.os.linux.advocacy
Subject: Re: Linux in college & high school
Date: Sun, 13 May 2001 17:59:07 -0600
On Sun, 13 May 2001 17:29:07 -0600, Dave Martel <[EMAIL PROTECTED]>
wrote:
>On Sun, 13 May 2001 22:48:21 GMT, somebody <[EMAIL PROTECTED]> wrote:
>
>>Craig Kelley <[EMAIL PROTECTED]> stands accused of saying:
>>
>>>Well, MacOS X is simply Apple's version of Linux.
>>
>>is freebsd simply freebsd's version of Linux?
>
>No, FreeBSD is the Universtiy of California, Berkeley's version of
>Unix.
I started thinking about that after hitting Send. FreeBSD is derived
from BSD but I'm not sure what the relationship is between the
development team and Berkely.
Anyone know?
------------------------------
From: MH <[EMAIL PROTECTED]>
Subject: Re: mail sends, but does not receive
Date: Sun, 13 May 2001 17:19:17 -0700
Peter T. Breuer wrote:
> OK. You would need to get out tcpdump to see if it had been firewalled
> or foiled by tcpwrappers.
>
This is what I get after attempting to send a message from my server
(ATLAS) to my workstation (ZEUS):
tcpdump port 25
17:09:49.652779 eth0 < ATLAS.OAS.1123 > ZEUS.OAS.smtp: S
1566321197:1566321197(0) win 32120 <mss 1460,sackOK,timestamp 16336759
0,nop,wscale 0> (DF)
17:09:49.652817 eth0 > ZEUS.OAS.smtp > ATLAS.OAS.1123: R 0:0(0) ack
1566321198 win 0 (DF)
> It looks pretty clear that it's either a frewall or tcpwrappers.
> Sendmail also might have an accept list - what version is it?
>
> Peter
>
sendmail-8.11.2-14
According to the RELEASE-NOTES Redhat has reconfigured sendmail to only
accept mail from the local host. However, the information they provide to
change this behavior appears to be incorrect--since the problem remains
(AFTER I made the suggested reconfiguration and restarted sendmail). Hence
my original post.
The sendmail NGs have numerous postings on this issue, but the
recommendations simply refer to the procedure outlined in the RH
RELEASE-NOTES, which as I've just noted don't seem to have any effect. I
came across at least one post where the individual is continuing to have
the same problem AFTER making the suggested changes, just as I have, so
it's not just me.
Perhaps it's best that I continue to monitor the sendmail NGs, as sooner or
later someone is going to figure this one out and post the answer there.
--
I use GNU/Linux and support the Free Software Foundation. This message was
composed and transmitted using Free software, licensed under the General
Public License.
------------------------------
From: "Steve Weiss" <[EMAIL PROTECTED]>
Subject: Re: mail sends, but does not receive
Date: Sun, 13 May 2001 20:36:55 -0400
The RH default installation of sendmail now dissallows remote
connections. Look in /etc/mail for sendmail.mc and go down to the bottom
of that file and you'll see directions for opening it to remote
connections. After commenting out the "offending" line, you have to run
the command:
m4 /etc/mail/sendmail.mc > /etc/sendmail.cf
-S
In article <[EMAIL PROTECTED]>, "MH" <[EMAIL PROTECTED]>
wrote:
> Recently did a clean install of RH7.1 on one of my client boxes and can
> no longer receive mail messages from my server (using mail). I can send
> messages to the server, and I can send and receive locally, but I can't
> receive from remote hosts.
------------------------------
From: MH <[EMAIL PROTECTED]>
Subject: Re: mail sends, but does not receive
Date: Sun, 13 May 2001 18:46:36 -0700
Steve Weiss wrote:
> The RH default installation of sendmail now dissallows remote
> connections. Look in /etc/mail for sendmail.mc and go down to the bottom
> of that file and you'll see directions for opening it to remote
> connections. After commenting out the "offending" line, you have to run
> the command:
>
> m4 /etc/mail/sendmail.mc > /etc/sendmail.cf
>
That doesn't work. I read the RELEASE-NOTES and checked the sendmail NG.
NONE of the suggestions/instructions solves the problem. I've tried
reconfiguring sendmail, editing hosts.allow, etc. The error I get is
"relaying denied" or something to that effect (I've deleted the messages).
--
I use GNU/Linux and support the Free Software Foundation. This message was
composed and transmitted using Free software, licensed under the General
Public License.
------------------------------
From: Mudshark
Crossposted-To: comp.os.linux.advocacy
Subject: Re: Linux in college & high school
Date: Mon, 14 May 2001 01:45:04 GMT
I taught an introduction to programming course at my high-school and
used a linux server with great success. The students used ssh to
connect to the server, learned vi, learned some shell programming,
basic perl, c/c++, used the compilers, and even mucked around with
awk/sed/grep and regular expressions. They were quite productive, and
learned the command line easily.
I introduced a bunch of lower achieving kids to linux this semester.
they are intrigued by the elegant command line interface, and have no
problem learning basic commands and simple shell scripting.
The high-school is a fantastic place to introduce linux. there are
tons of older 486 machines lying about with vga monitors everywhere,
hell, slap linux on every one of them, and you have a state of the art
programming/ tcp/ip networking environment in no time.
Kandah
On Thu, 10 May 2001 17:49:13 -0700, Christopher Corbell
<[EMAIL PROTECTED]> wrote:
>I'm looking for leads to information, statistics, or just
>individual testimonials about the use of Linux in educational
>settings, particularly in high school, community college,
>university, and grad school settings. Does anyone out there
>know of any general sources of information on the use of
>Linux in these settings? I would especially be interested
>in the use of Linux in math & science education. Also, I'd
>like to know about any advocacy groups, PC 'salvage' groups
>or similar organizations that are active in getting Linux
>used in schools.
>
>Thanks for any info.
>- Christopher
------------------------------
From: marshall <[EMAIL PROTECTED]>
Subject: permission denied?
Date: Mon, 14 May 2001 01:55:30 GMT
Newbie question:
New clean install of Mandrake 8.0 with default package installation.
Have downloaded staroffice 5.2 binary and trying to install it in the
/home directory. However, when start a konsole session, go to /home and
type ./so-5_2-----.bin, I get PERMISSION DENIED. So, I logged in
as root and the same occurred. Does anyone have any ideas what I need to
do to install these?
------------------------------
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End of Linux-Misc Digest
******************************
