User dead process

[peterchu]

In our system , each user can only access 1 session , they can't concurrent login to the system for 2 sessions , sometimes , the user process will be dead due to the unexpected reason , then the user can't login again until the dead process was killed by administator , could suggest what is the best way to fix it so that user can login even there is a dead user process ? thx

[KapilRaj · Accepted solution]

Write a script to kill such dead processes which is not attached to a terminal and schedule it thru cron for evey 10 minutes !

Regds,

Kaps

[V.Tamilvanan]

Hi,
Add a line on login script to check and kill any dead process of that particular user.

Sample:-

kill -9 `ps -ef|grep $LOGNAME|grep -v grep| defunc|awk '{print $2}'`

[Paula J Frazer-Campbell]

Hi

only use a kill -9 as a last resort as it does not allow cleanup.

as well as the above options investigate and find out what is happening to cause this problem, and then of course fix it.

Paula

[Pete Randall]

I would suggest that you add to the existing logic that limits them to one session. Presumably, you have code in /etc/profile or in the users .profile to check to see if they have existing sessions. I would add something like this:
PROCESSES=`UNIX95= ps -U $USERNAME | grep -v PID |awk '{ print $1 }' | sort
-n`
for PROC in $PROCESSES
do
echo "\tKilling process $PROC"
kill $PROC
done

This way, if they do have existing processes, they will automatically terminate the previous ones and allow them to log in.


Pete