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telinit or init Command


Initializes and controls processes.

{ telinit | init } { 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | a | b | c | h | Q | q | S | s | M | m | N }


The init command initializes and controls processes. Its primary role is to start processes based on records read from the /etc/inittab file. The /etc/inittab file usually requests that the init command run the getty command for each line on which a user can log in. The init command controls autonomous processes required by the system.

The process that constitutes the majority of the init command's process dispatching activities is /usr/sbin/getty. The /usr/sbin/getty process initiates individual terminal lines. Other processes typically dispatched by the init command are daemons and the shell.

The telinit command, which is linked to the init command, directs the actions of the init command. The telinit command takes a one-character argument and signals the init command by way of the kill subroutine to perform the appropriate action.

The telinit command sets the system at a specific run level. A run level is a software configuration that allows only a selected group of processes to exist. --

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Page last modified on April 24, 2009, at 06:42 PM