This shutdown command is used to shut down the local computer immediately, since we designated a time of zero with the shutdown /t option. The zero in this command could easily be changed 10 to delay the shutdown for several seconds, 60 to make the computer shut down in one minute, etc. To shut down the remote Mac, type sudo shutdown -h now. To restart the remote Mac, type sudo shutdown -r now. Instead of now, type +n, with n representing a number in minutes that will elapse before the command is executed. THE GREATEST MAC PRANK EVER!!!!!!!!!: This is one of the greatest pranks for a mac computer known to the human race. It is a compile of knowledge collected over about 3 months of using apple script editor on and off. I took everything I knew and compiled it into a massive killer prank t. $ sudo shutdown -s +30. Shutdown the machine in 60 minutes: $ sudo shutdown -h +60. Cancel any of the above: $ sudo killall shutdown “Do all men kill the things they do not love?” The Merchant of Venice. Related macOS commands: kill - Stop a process from running. Login - log into the computer. Osascript - shutdown/restart via AppleScript.
Close down the system at a given time.
Shutdown provides an automated shutdown procedure for super-users to nicely notify users when the system is shutting down, saving them from system administrators, hackers, and gurus, who would otherwise not bother with such niceties.
At intervals, becoming more frequent as apocalypse approaches and starting at ten hours before shutdown, warning messages are displayed on the terminals of all users logged in.
At shutdown time a message is written in the system log, containing the time of shutdown, who initiated the shutdown and the reason. A terminate signal is then sent to launchd to bring the system down to single-user state (depending on above options).
A scheduled shutdown can be canceled by killing the shutdown process (a SIGTERM should suffice).
FILES
/etc/nologin tells login not to let anyone log in
/fastboot tells rc(8) not to run fsck when rebooting
/usr/libexec/upsshutdown - Run a command when the UPS shuts down.
Examples
Reboot the machine immediately:
$ sudo shutdown -r now
Send the machine to sleep in 30 minutes:
$ sudo shutdown -s +30
Shutdown the machine in 60 minutes:
$ sudo shutdown -h +60
Cancel any of the above:
$ sudo killall shutdown
“Do all men kill the things they do not love?” ~ The Merchant of Venice
Related macOS commands:
kill - Stop a process from running.
login - log into the computer.
osascript - shutdown/restart via AppleScript.
pmset - sleep now.
sudo poweroff
wall - write a message to users.
fastboot(8)
reboot - Stop and restart the system.
uptime - Show how long system has been running.
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Shutdown or Restart Mac OS X Using Terminal is the great way to Shutdown Mac OS Properly. Suppose your Mac Computer having any problem and can’t able to Click on Apple Menu then use command Line to shutdown and Restart your Computer. There is also a command for Time shutdown means that you can set time to shutdown PC on that Specified time. There is Many feature like sleep, Log Off, Reboot and Shutdown Mac OS.
Shutdown Mac OS Using Terminal
1. First of all to Launch Terminal, Click on Go Menu Bar then Click on Applications.
2. Now on the Application Windows Click on Utilities and then Click on Terminal Icon.
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3. Now Terminal Windows Opened then Type below Command to Shutdown Mac OS X Immediately.
sudo shutdown -h now
Shutdown Command Options Mac
Now it will ask for Mac PC Password, Put Password and then Press Enter. Then you will see that your computer will shutdown automatic within second.
Reboot Mac OS Using Command Line
To Reboot Mac OS using Command line type below Command in Command Line,
sudo shutdown -r now
Now your Computer will Reboot Automatically with in second.
Shutdown Mac OS in Certain Time
To Shutdown Computer within specified time then Type the below command on your Command Line , then Press Enter , Now it will ask for System Password Put Password and Press Enter.
sudo shutdown -h +10
Now after 10 Minute your Computer will Shutdown Automatic .
Shutdown Mac OS Certain Date and Time
There is also great feature in Command line that you can Shutdown your Mac PC on Specified Date and Time, Type Below Command on Command Line like below Format.
sudo shutdown -h yymmddhhmm
Shutdown Command For Linux Machine
yy – Represent Year
mm – Represent Moth
dd – Represent date
hh – Represent Hour
mm – Represent Minutes
Force Shutdown Command For Mac
Suppose you want your Computer Will automatic shutdown on 25 Feb , 2015 date and Time 22:00 O’Clock. then you have to type Command and Press Enter.
sudo shutdown -h 1502252200
Now Type Password of your Mac PC then Press Enter.
Shutdown Command For Mac Mojave
After Put Password It will show Information that On which date and time your Computer Will Shutdown. Now you have learned from this Article to Schedule Shutdown Mac PC on Specified date and Time.