caffeinate

Prevent macOS from sleeping. More information: https://keith.github.io/xcode-man-pages/caffeinate.8.html.

• Prevent from sleeping for 1 hour (3600 seconds):

caffeinate -u -t 3600

• Prevent from sleeping until a command completes:

caffeinate -s "command"

• Prevent from sleeping until a process with the specified PID completes:

caffeinate -w pid

• Prevent from sleeping (use Ctrl + C to exit):

caffeinate -i

• Prevent disk from sleeping (use Ctrl + C to exit):

caffeinate -m