caffeinate but it’s written in Rust and has more options. Keeps your Mac wide awake.

Current Status

In development. Works fine, but I want to add more features and document the different types of sleep before version 1.0.0.


GitHub Releases

Download the latest release from here.


This won’t be available until version 1.0.0.


cargo install caffeinate2


Usage: caffeinate2 [OPTIONS] [COMMAND]...

  [COMMAND]...  Wait for given command to complete (takes priority above timeout and pid)

  -v, --verbose             Verbose mode
      --dry-run             Dry run. Don't actually sleep. Useful for testing
      --drop-root           Drop root privileges in command. Some programs don't want to work as root, but you need root to disable sleep entirely
  -d, --display             Disable display sleep
  -m, --disk                Disable disk idle sleep
  -i, --system              Disable idle system sleep. Default if no other options are specified
  -s, --system-on-ac        Disable system sleep while not on battery
  -e, --entirely            Disable system sleep entirely (ignores lid closing)
  -u, --user-active         Declare the user is active. If the display is off, this option turns it on and prevents it from going into idle sleep
  -t, --timeout <DURATION>  Wait for X seconds. Also supports time units (like "1 day 2 hours 3mins 4s")
  -w, --waitfor <PID>       Wait for program with PID X to complete
  -h, --help                Print help
  -V, --version             Print version

Sleep Timers (in order of priority)


Sleep disabled until the command completes. You should enclose the command in quotes, although sometimes it isn’t required. Timeout and PID will be ignored if a command is specified.

caffeinate2 "sleep 5"

Timeout and PID

Sleep is disabled for a certain amount of time or until the program with the specified PID completes. If both are specified, it waits until one of them completes.

Timeout can either be a number of seconds or a duration string. For example, you can pass -t 600 or -t 10m to wait for 10 minutes. You can create more descriptive durations, like -t "1 hour and 30 minutes", but it only looks at the first letter (so “3 movies” is just 3 minutes). Anything that’s not a number followed by a letter will be ignored (the “ and” in the previous example). YOU MUST USE QUOTATION MARKS FOR THIS TO WORK. Otherwise, it will try to parse anything that’s past the space as a command, and ignore the timeout.

caffeinate2 -t 600

caffeinate2 -t "1 hour and 30 minutes"

caffeinate2 -w 1234

caffeinate2 -t 600 -w 1234

None of the above

Sleep will be disabled until you press Ctrl+C.



This project is licensed under the MIT License - see the license file for details.