Kill all processes for a given user

Is there a reliable way to kill all the processes of a given user? kill(-1, SIGKILL) as that user will work, unless a rogue process of that user kills the killing process first. The best I can find so far is to loop through system("ps -u") for that user and kill the processes that way, but that seems really hacky and inefficient.

EDIT: To clarify, I'm specifically asking for a POSIX-compatable solution. For some reason I thought tagging the question posix would put that in the title.

posix

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What about iterating on the /proc virtual file system ? http://linux.die.net/man/5/proc ?

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最佳答案

Just (temporarily) killed my Macbook with

killall -u pu -m .

where pu is my userid. Watch the dot at the end of the command.

Also try

pkill -u pu

ps -o pid -u pu | xargs kill -1

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Here is a one liner that does this, just replace username with the username you want to kill things for. Don't even think on putting root there!

pkill -9 -u `id -u username`

Note: if you want to be nice remove -9, but it will not kill all kinds of processes.

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On Debian LINUX, I use: ps -o pid= -u username | xargs sudo kill -9.

With -o pid= the ps header is supressed, and the output is only the pid list. As far as I know, Debian shell is POSIX compliant.

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The following kills all the processes created by this user:

kill  -9  -1