The /etc/inittab file is the configuration file used by the System V (SysV) initialization system in Linux. This file defines three items for the init process: the default runlevel. what processes to start, monitor, and restart if they terminate. what actions to take when the system enters a new runlevel.

What is Respawn in Linux?

respawn: The process will be restarted whenever it terminates (e.g. getty). wait: The process will be started once when the specified runlevel is entered and init will wait for its termination. once: The process will be executed once when the specified runlevel is entered.

In which directory is the Inittab file found?

The /etc/inittab file was the configuration file used by the original System V init(8) daemon. The Upstart init(8) daemon does not use this file, and instead reads its configuration from files in /etc/init.