I am done using my laptop but I am using the hotspot in my smart phone. So I want my laptop to be awake for next one hour. How can I Shutdown the laptop after one hour of time?
Scheduling a shutdown
To shutdown run the command:
sudo shutdown -P +60
That will wait 60 mins before starting the shutdown sequence.
You could do:
sudo shutdown -P 1:00
to shutdown at 1 AM and
sudo shutdown -P now
to shutdown now.
A message is broadcast to all terminals to warn about the shutdown.
Cancel a pending shutdown
After, starting a shutdown, if the time argument is not "+0" or "now", you can use:
sudo shutdown -c
to cancel the scheduled shutdown.