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RUNLEVELS: It is nothing but a mode of operation in Linux OS.

  • A  runlevel  is  a  software configuration of the system which allows only a selected group of processes to exist.
  • The processes spawned by init for each of these runlevels are defined in the /etc/inittab file.
  • Init can be in one of eight runlevels: 0-6 and S or s.  The runlevel is changed  by a privileged user running telinit command, which sends appropriate signals to init, telling it which runlevel to change to.



Category: Open System-Linux | Views: 3205 | Added by: shanky | Date: 2015-03-18 | Comments (0)