How to shutdown or reboot Solaris, Linux, AIX or HPUX

[Solaris] [Linux] [AIX] [HPUX] [Windows] [MacOS]

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Solaris

Table 1 — Solaris shutdown and reboot commands

Action	Command(s)
Shutdown	# shutdown -y -g0 # sync;sync;init 5
Poweroff	# shutdown -y -i5 -g0 # poweroff
Reboot	# shutdown -y -i6 -g0 # sync;sync;init 6 # reboot

shutdown command options:

• -y — Pre-answer the confirmation question so the command can be run without user intervention.
• -i <init-state> — init-state specifies the state init is to be in. By default, system state 's' is used.
• -g <grace-period> — Allow the super user to change the number of seconds from the 60-second default.

Linux

Table 2 — Linux shutdown and reboot commands

Action	Command(s)
Shutdown	# shutdown
Cancel a shutdown	# shutdown -c
Poweroff	# poweroff
Reboot	# shutdown -r now # reboot

shutdown options:

• By default the shutdown command will bring the OS to runlevel 1.
• now — perform shutdown immediately, default shutdown is 60s

AIX

Table 3 — AIX shutdown and reboot commands

Action	Command(s)
Shutdown	# shutdown # shutdown now # shutdown -F
Reboot	# shutdown -r # shutdown -Fr # reboot

shutdown options:

• Default shutdown is 60s
• -r — reboot - flush cache to disk.
• -F — forcefully.

HP-UX

Table 4 — HP-UX shutdown and reboot commands

Action	Command(s)
Shutdown	# shutdown -h -y now # shutdown -h -y 0
Reboot	# shutdown -r -y now # shutdown -r -y 0

shutdown options:

• 0 — 0 is grace period in seconds.

Microsoft Windows

Table 5 — Microsoft Windows shutdown and reboot commands

Action	Command(s)
Shutdown	C:\> shutdown /s C:\> shutdown /s -t 60
Restart	C:\> shutdown /r C:\> shutdown /r -t 60

shutdown options:

• -t 60 — perform action in 60 seconds, default is immediately.

MacOS X

Table 6 — MacOS X shutdown and reboot commands

Action	Command(s)
Shutdown	# sudo shutdown -h # sudo shutdown -h now # sudo halt # osascript -e 'tell app "System Events" to shut down'
Reboot	# shutdown -r # shutdown -r now # osascript -e 'tell app "System Events" to restart'

shutdown options:

• now — perform action immediately, default is 60s.
• +30 — perform action in 30 minutes.