This post will have some command line tools used in macOS. Truth be told, I do not use ALL of these commands all of the time but I consider them useful nonetheless. caffeinate (sleep) caffeinate to prevent your mac from going to sleep as long as the command is running. caffeinate -u -t <seconds> to specify the time. Adding the -d flag prevents the display from going to sleep. caffeinate <command> will start the command in a new process and will prevent sleep until that process exits.