halt command to disable the Linux operating system is running. halt command will first detection system runlevel , if runlevel 0 or 6, then shut down the system, otherwise call shutdown to shut down the system.
grammar
halt (option)
Options
-d: Do not recorded in the wtmp;
-f: no matter what the current runlevel, do not call shutdown that is forced to shut down the system;
-i: Prior to halt, shut down all network interfaces;
-n: before the halt, without first execution Sync ;
-p: halt after performing the poweroff ;
- W : wtmp records only, without the end of the actual system.
Examples
// Close the halt -p power off the system. halt -d // shut down the system, but does not leave a record.