If we use ssh command to connect to remote server, but did not log out normally (for example, suddenly disconnected), when we enter next time, we may find that the server is full of our own usernames.
The following is the screen I see using the w command:
I must say that looks a bit an eye-catching.
If you want to logout/logoff these users, you can use pkill command to do it. That is which topic I want to record today.
pkill
By the way, in addition to logout users, the pkill command can also be used to kill processes.
Kill the process with the keyword test
pkill testKill the process whose user is user01 with the keyword test
pkill -u user01 testThe above is a basic pkill introduction, the following is how to logout user.
Logout user whose TTY is pts/0
sudo pkill -kill -t pts/0
In this way, user whose TTY (teletype) is pts/0 can be logout.
You can logout any user you want if you have root permission.
References
- https://linux.die.net/man/1/pkill
- https://linuxize.com/post/pkill-command-in-linux/
- https://www.cyberciti.biz/faq/linux-logout-user-howto/