init

Additional Notes

init is a system command used to initialize or change system runlevel on init systems. It is used to switch between runlevels (e.g., single-user or multi-user mode) or to shut down and reboot the system.

Most modern Linux distributions use systemd instead of SysV init. On those systems, systemctl replaces init for managing runlevels and system state.

Syntax

init [options] [arguments]

Parameters

• options: Flags that change how init behaves.
• 'runlevel': Target runlevel (0-6, S/s, or equivalent).

Common Options

• --help: Show command help when supported.
• --version: Show version information when supported.

Examples

init --help
man init

Practical Notes

Options can vary by distribution and package version. Use man init, init --help, or the package documentation for exact syntax.