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Is there are way to make it so that when a user issues command "ps aux," it is automatically rewritten as "ps ux?" That is, a way to make it so no user can pass the 'a' argument to ps?
If you only want users to see their own processes, there are security patches to the kernel that do that - I know www.openwall.com's patch will do that for a 2.4 series kernel.
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