Linux logged out a user automatically
Q. We have a few users who frequently forget to log out and I'd like to force them or automatically log out a user in case of inactivity detected. How do I force user to be logged out automatically?
A. BASH provides TMOUT variable. It is necessary for security reasons to have an inactive user logged out after a period of inactivity from Linux / UNIX ssh / telnet session. This can be accomplished by setting an environment variable TMOUT.
Automatically log out a user
Add the TMOUT variable to your /etc/bashrc file:
# vi /etc/bashrc
Set TMOUT to 300 seconds (5 minuets):
TMOUT=300
Save an close the file. Above config would automatically logout users after 300 seconds of inactivity. Please note that this hack only works with run level 2, 3 i.e. it will not work with GUI sessions.
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Tags: environment variable, Linux, set bash variable, ssh telnet, telnet session, tmout, UNIX
November 10th, 2007 at 2:35 pm
Hi
Do i need to add this to every bashrc in user’s home dir to work ???
Thanks
Anil
December 5th, 2007 at 12:57 am
Hullo Anil,
if you read carefully, you are editting the “/etc/bashrc” - this is the *system* (global) BASH Resource Configuration file. Hence, editting this file will make it affect *all* (subsequent) logons.
You could (in theory) in your own .bashrc modify the value to something else (e.g. to 600seconds = 10mins) if you wished.
hth,
.h