>Usage
The shutdown command safely powers off or reboots the computer. Many shutdown commands require administrative privileges, so prepend sudo to the command for proper execution, e.g., sudo shutdown -h now.
>Synopsis
>Options
-h now
using this command makes the program shut down immediately.
Example 1:
-zsh
shutdown -h now
Broadcast message from user@hostname
The system is going down for halt NOW!
-P now
Powers off the system immediately.
Example 2:
-zsh
shutdown -P now
Broadcast message from user@hostname
The system is going down for power off NOW!
-i
Schedules a system shutdown at a specific time.
Example 3:
-zsh
hh:mm <time>
Broadcast message from user@hostname
The system is going down for halt at 23:30!
-c
Cancels any previously scheduled shutdown or reboot.
Example 4:
-zsh
shutdown -c <time>
user@hostname:~$ shutdown -c
Shutdown scheduled for 23:30 has been canceled.
-k now
Sends a warning message to all logged-in users but does not shut down the system.
Example 5:
-zsh
shutdown -k now
Broadcast message from user@hostname
he system is NOT going down, but users are being warned.