Sunday, January 3, 2021

Force Logout Other User from Linux

First, we need to know the username. This can easily be done using w command

# w

12:34:31 up 36 days, 14:14,  2 users,  load average: 0.07, 0.02, 0.00

USER     TTY      FROM             LOGIN@   IDLE   JCPU   PCPU WHAT

ironman   pts/0    ::1              12:34    2.00s  0.01s  0.01s w

root     pts/3    10.29.25.230     12:22    7.00s  0.13s  0.00s bash


Let's say we want to log out ironman from our server. What we have to do is to use a command called pkill against that user.

# pkill -u ironman 


All processes that is owned by that user will be killed. 
# w

12:34:31 up 36 days, 14:14,  2 users,  load average: 0.07, 0.02, 0.00

USER     TTY      FROM             LOGIN@   IDLE   JCPU   PCPU WHAT

root     pts/3    10.29.25.230     12:22    7.00s  0.13s  0.00s bash


The ironman user is no longer logged in. Easy peasy.

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