Linux - ulimit (shell ressource control)

the soft limit freely in the range of 0….
  • the hard limit too, but can only decrease it.
You must be root to increase the hard limit from its default value with the help of a configuration file such as: limits.conf.Example for the user obi:
obi                 soft    nofile  1024
obi                 hard    nofile  10240

To see the hard limit values, run “ulimit -H -a”.Some Linux distributions have PAM modules ( that can adjust the limit values at login time.

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