reboot, halt, poweroff - reboot or stop the system
SYNOPSIS
reboot [OPTION]...
halt [OPTION]...
poweroff [OPTION]...
DESCRIPTION
These programs allow a system administrator to
reboot, halt or poweroff
the system.
When called with
--force
or when in runlevel
0
or
6,
this tool invokes the
reboot(2)
system call itself and directly reboots the system. Otherwise this
simply invokes the
shutdown(8)
tool with the appropriate arguments.
Before invoking
reboot(2),
a shutdown time record is first written to
/var/log/wtmp
OPTIONS
-f, --force
Does not invoke
shutdown(8)
and instead performs the actual action you would expect from the name.
-p, --poweroff
Instructs the
halt
command to instead behave as
poweroff.
-w, --wtmp-only
Does not call
shutdown(8)
or the
reboot(2)
system call and instead only writes the shutdown record to
/var/log/wtmp
--verbose
Outputs slightly more verbose messages when rebooting, useful for debugging
problems with shutdown.
ENVIRONMENT
RUNLEVEL
reboot
will read the current runlevel from this environment variable if set in
preference to reading from
/var/run/utmp
FILES
/var/run/utmp
Where the current runlevel will be read from; this file will also be updated
with the runlevel record being replaced by a shutdown time record.
/var/log/wtmp
A new runlevel record for the shutdown time will be appended to this file.