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Only to logout all users except root
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Logs all users out except root.
I changed the grep to use a regexp in case a user's username contained the word root.
It's only to logout all other user's except "root"
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".
If you can do better, submit your command here.
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