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I want to limit the max. resource ( eg. CPU , memory ) that the user can use , for exampe , userA can max. use 20M memory and 30% CPU only , userB can max. use 50M memory and 50% CPU only , is it possible ? thx.
Check out what's available by editing limits.conf (usually in /etc/security) and reading the man page for limits.conf. It will do some of what you require. For disk space usage look into disk quotas (there's a HOWTO at http://www.tldp.org for setting those up).
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