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Command to logout all the users in one command

Terminal - Command to logout all the users in one command
who -u | grep -vE "^root " | kill `awk '{print $7}'`
2010-11-05 17:43:41
User: ProfessorTux
Functions: grep kill who
Command to logout all the users in one command

Logs all users out except root.

I changed the grep to use a regexp in case a user's username contained the word root.


There is 1 alternative - vote for the best!

Terminal - Alternatives
who -u|grep -v root|awk {'print $6'}|kill `awk {'print $0'}`
2010-11-05 12:19:06
User: leosimon
Functions: awk grep kill who

It's only to logout all other user's except "root"

who -u | grep -vE "^root " | kill `awk '{print $6}'`
2010-11-13 16:51:09
User: leosimon
Functions: grep kill who
Tags: bash

Only to logout all users except root

skill -KILL -v /dev/pts/*
2010-11-14 18:31:38
User: Cammander
Functions: skill
Tags: bash

This command logs out all users - which is way more secure to use ps -ef and "grep" to kill processes.

Never ever use ps -ef piped to grep to kill something. If you ever need to ps-something use the UNIX95-directive, which makes sure you will never need "grep" together with "ps".

Know a better way?

If you can do better, submit your command here.

What others think

Hi Professortux,

I have used the command given by you, but it doesn't work because you have awk the field 7 which specifies the IP address of the login. I have changed the command as follows, and it works fine.

who -u | grep -vE "^root " | kill `awk '{print $6}'`

Comment by leosimon 228 weeks ago

Your point of view

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