NAME

       shutdown, reboot, poweroff - poweroff or reboot the system

SYNOPSIS

       /sbin/shutdown [-r] [-f] [-F]
       /sbin/reboot [-w] [-f] [-n]
       /sbin/halt [-w] [-f] [-n]
       /sbin/poweroff [-w] [-f] [-n]

DESCRIPTION

       Shutdown  is  a  program to poweroff or reboot the system that maintains some compatibility with original
       SysV-init halt, poweroff, reboot and shutdown programs.  These programs are expected by some initscripts,
       graphical desktop environments and tools like acpi.
       When called as shutdown, halt or poweroff without options, runit(8) is told to shutdown  the  system  and
       poweroff.
       When called as reboot runit(8) is told to reboot the system.
       When runit(8) is not the current init system this program sends data in the appropriate format to perform
       the requested action to the initctl pipe, if it exists.

SHUTDOWN OPTIONS

       -r     Reboot the system instead of poweroff.

       -f     Write  a  /fastboot flag file. The program or the scripts responsible for the system boot task can
              test for this file when the system comes up again and decide to skip fsck.   The  program  or  the
              scripts that perform the boot task also need to take care of the removal of the flag file.

       -F     Write  a /forcefsck flag file. The program or the scripts responsible for the system boot task can
              test for this file when the system comes up again and decide to run fsck with a 'force' flag.  The
              program or the scripts that perform the boot task also need to take care of  the  removal  of  the
              flag file.

HALT OPTIONS

       -f     Invoke  sync(),  then  force  an  unsafe reboot or poweroff immediately without signaling the init
              system.  This will likely result in an unclean shutdown and can cause  data  loss  or  corruption.
              When runit is init, this option is a No-Op and all other options are ignored. See #899246

       --force
              Invoke  sync(),  then  force  an  unsafe reboot or poweroff immediately without signaling the init
              system.  This will likely result in an unclean shutdown and can cause  data  loss  or  corruption.
              This option works regardless of the running init system.

       -w, --wtmp-only
              No-Op, maintained for compatibility with initscripts. See #919699

       -n     Write  a  /etc/runit/nosync  flag  file.  If  this file exists runit does not invoke sync() before
              reboot or poweroff.  The /etc/runit/nosync flag file is also checked when this program  is  called
              with -f or --force

SWITCHING FORM OTHER INIT SYSTEMS

       This  program  maintains  a  compatibility  layer  with  SysV-init's  initctl  pipe according to the spec
       described in SysV-init's initctl(5). This allow one to reboot the system when switching from another init
       to runit-init.
       Currently only switching from systemd and SysV-init is tested but any other init system that maintains an
       initctl pipe compatible with SysV's one should work.

BUGS

       Combining flags, like halt -wf is not supported, all merged short options will be ignored.
       Non existent or unsupported options are silently ignored.

SEE ALSO

       init(8)

                                                 August 29, 2021                                     SHUTDOWN(8)