Greetings Guys..!!

Well if you want to kill some users process ( in unix/linux hosting server) or if you want to terminate from the shell access then you can use following commands.

If you want the user jason’s process details

ps -aux |grep jason

from the output just kill the process id of that user and that user will be out from the shell without any wall message for him/her.

By other way you can do following.

Task: How to halt/stop user called jason

Type the skill command as follows:
# skill -STOP -u jason

You muse be root to stop other users.

Task: How to resume already halted user called jason

Send CONT single to user jason, type the following command:
# skill -CONT -u jason

Task: How to kill and logout user called jason

You can send KILL single, type the following command:
# skill -KILL -u jason

Task: Kill and logout all users

The ultimate command to kill and logout all users, type the following command:
# skill -KILL -v /dev/pts/*

Please note that send users warning message or logout notice using wall command to avoid data loss.

Enjoy..