Comments on: Linux / UNIX Automatically Log BASH / TCSH / SSH Users Out After a Period of Inactivity

By: Some Guy

Some Guy — Sat, 10 Dec 2011 15:19:07 +0000

ClientAliveInterval 300
ClientAliveCountMax 0

This keeps sessions alive by sending nul packets every 300 seconds. It doesn’t disconnect idle users.

By: Dougie Smythe

Dougie Smythe — Fri, 24 Jun 2011 12:00:31 +0000

Thanks so much for the tcsh syntax, Indie.
I’ll give it a try.

By: Indie

Indie — Tue, 21 Jun 2011 14:09:49 +0000

TCSH uses the autologout variable instead of TMOUT so you’d need to create autologout.csh with something like the following, I’m not at all familiar with TCSH syntax.

switch (`id -un`)
  case root:
  case sysadmin:
  case backup:
    unset autologout
    breaksw
  default:
    set -r autologout=100
endsw

By: Dougie Smythe

Dougie Smythe — Tue, 21 Jun 2011 11:02:32 +0000

Thanks Indie, that was what I was looking for. But I have both bash and tcsh users on my system. So how do I implement it in csh?
Cheers,

By: Indie

Indie — Fri, 20 May 2011 00:17:41 +0000

@MikeM: You can kill specific terminals with the command

pkill -HUP -t pts/2

you don't need to send it the kill signal. You could also modify the original autologout.sh script so the TMOUT value only gets set for specific users

case "$(id -un)" in
root|sysadmin|backup) ;;
*)    readonly TMOUT; export TMOUT=300;;
esac

By: Matteo D'Alfonso

Matteo D'Alfonso — Thu, 08 Jul 2010 08:53:59 +0000

Thanks!

Only one note, on tcsh v. 6.14 you need to quote the value:

set -r autologout=’5′

By: Vivek Gite

Vivek Gite — Tue, 31 Mar 2009 20:15:36 +0000

@MikeM

Thanks for sharing your script.

By: MikeM

MikeM — Tue, 31 Mar 2009 16:55:38 +0000

We wanted something a bit more user explicit (log out idle users but not the boss(s)). The list of users below are exempt. Set this script in crontab to run every 10 minutes. With an idle of time of 30, the idled sessions will be no more than 39 minutes idle. Here is our script;

#! /usr/bin/awk -f
BEGIN {
system("who -u | sort +5 > /tmp/loginfile");
system("echo User Sessions Killed > /tmp/killedlogins");
system("echo `date` >> /tmp/killedlogins");
while (getline = 1) || (timearray[2] >= 30)) &&
($1 != "root") &&
($1 != "user2") &&
($1 != "user2") &&
($1 != "user4") &&
($1 != "lastuser")) { {
system("ps -ef | grep " $1 " | awk '{print $2}' | xargs kill -KILL");
print $1, "[Idle " $6 "] Session terminated from " $8 >> "/tmp/killedlogins";
};
};
};
}

By: Boopalan

Boopalan — Sat, 07 Mar 2009 02:49:16 +0000

i wont hardware networking /linux /ccna

By: marz

marz — Wed, 25 Feb 2009 21:23:33 +0000

while date ; do sleep 10 ; done

watch -n 10 date

;)

By: Liju

Liju — Wed, 25 Feb 2009 15:19:08 +0000

Good tips .. :-)

By: yoander

yoander — Wed, 25 Feb 2009 14:58:44 +0000

nice tip