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The INIT process ID in Linux is usually:
999
None of these
1
0
In Unix-based computer operating systems, init (short for initialization) is the first process started during booting of the computer system. Init is a daemon process that continues running until the system is shut down. It is the direct or indirect ancestor of all other processes and automatically adopts all orphaned processes. Init is started by the kernel using a hard-coded filename; a kernel panic will occur if the kernel is unable to start it. Init is typically assigned process identifier 1. EDIT: A lot of Linux distros have moved away from the use of init and service in favor of systemd. INIT is deprecated at this point. EDIT SOME MORE: While a lot of Linux distros have moved away from sysvinit and generally now use systemd, systemd is indeed an init system.
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