Startup Management (init.d)
init.d is a daemon which is the first process (PID = 1) of the Linux system. Then other processes, services, daemons, and threads are started by init. One can write their own scripts in ‘/etc/init.d’ location to start services automatically on system boot. Services can be started and stopped manually by using service command.
It has following syntax: $ service [service_name] [action] e.g. $ service ssh start
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