/sbin/shutdown: invalid option -- t
Usage: shutdown [OPTIONS]
Options:
--help This help text
-f, --force Force unsafe power-off now, do not contact the init system.
--halt Halt system, regardless of how the command is called.
-h Halt or power off after shutdown.
-P, --poweroff Power-off system, regardless of how the command is called.
-r, --reboot Reboot system, regardless of how the command is called.
Shutdown doesn't seem to read the --help command
See expected:
/sbin/shutdown -t
/sbin/shutdown --help
system reboots