caffeinate

Prevent macOS from sleeping. More information: https://ss64.com/osx/caffeinate.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 (use Ctrl + C to exit):
  caffeinate -i
• Prevent disk from sleeping (use Ctrl + C to exit):
  caffeinate -m