shutdownsystemdDeveloperLennartPoetteringlennart@poettering.netshutdown8shutdownHalt, power-off or reboot the machineshutdown OPTIONSTIMEWALLDescriptionshutdown may be used to halt,
power-off or reboot the machine.The first argument may be a time string (which
is usually now). Optionally, this
may be followed by a wall message to be sent to all
logged-in users before going down.The time string may either be in the format
hh:mm for hour/minutes specifying
the time to execute the shutdown at, specified in 24h
clock format. Alternatively it may be in the syntax
+m referring to the specified
number of minutes m from now. now
is an alias for +0, i.e. for
triggering an immediate shutdown. If no time argument
is specified, now is
implied.Note that to specify a wall message you must
speciy a time argument, too.If the time argument is used, 5 minutes
before the system goes down the
/etc/nologin file is created to
ensure that further logins shall not be
allowed.OptionsThe following options are understood:Prints a short help
text and exits.Halt the machine.Power-off the
machine (the default).Reboot the
machine.Equivalent to
, unless
is
specified.Don't halt, power-off,
reboot, just write wall
message.Don't send wall
message before
halt, power-off, reboot.Skip file system check
on reboot. This is equivalent to
creating the
/fastboot file
before going down.Force file system
check on reboot. This is equivalent to
creating the
/forcefsck file
before going down.Cancel a pending
shutdown. This may be used cancel the
effect of an invocation of
shutdown with a
time argument that is not
+0 or
now.Exit statusOn success 0 is returned, a non-zero failure
code otherwise.NotesThis is a legacy command available for
compatibility only.See Alsosystemd1,
systemctl1,
halt8,
wall1