System Shutdown and Restart
Although it's not often necessary, you may find a reason to occasionally restart or shut down your server. Table A.15 contains these commands. Table A.15. Commands for Changing the State of the System | COMMAND | GENERAL USAGE | DESCRIPTION |
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| halt | halt | Shuts down the computer. | | init | init [RUNLEVEL] | Changes the current runlevel to the specified runlevel. Possible runlevels are | | | | 0 | System halt | | | | 1,S,s | Single-user mode | | | | 2 | Local multiuser, minimal networking | | | | 3 | Full multiuser with networking | | | | 4 | Not used | | | | 5 | Full multiuser with networking and graphical environment | | | | 6 | System reboot | | reboot | reboot | Restarts the computer. | | runlevel | runlevel | Displays previous and current runlevel. (If the previous runlevel is N, runlevel has not been switched since startup.) | | shutdown | shutdown [OPTIONS] time | Used to shut down or restart a Linux machine. Common options include -h
Halt, or shut down computer -r
Reboot computer For example:
shutdown -h now
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