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The Linux ps command allows multiple selectors, such as user and command name, but always returns the logical OR of those selectors (more than I want). Does anyone know of a method or tool already made that can get the intersection (AND) of process selectors?

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Try pgrep. Different selectors there are AND connected. The same connectors can be used in either AND or OR syntax.

Example: pgrep -u user1,user2 -G 111 sshd will list sshd-processes that belong to user1 OR user2 AND are in group 111.

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cool, I didn't know about that one, yet it was already on my system. Thanks! – Keith Mar 28 '12 at 3:01
Don`t mind - that is our age. ;-) pkill is even more cool. – Nils Mar 28 '12 at 20:37

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