Use caffeinate on Mac to prevent sleep

Feb-05, 2025 · 3min

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Learn how to use the caffeinate command on Mac to prevent system sleep, ensuring that long-running programs (such as development servers) will not be interrupted by system sleep

Sometimes some programs need to run for a long time, such as npm run dev or pnpm dev, these programs run when Mac enters sleep, which may cause the program to interrupt.

You can use the caffeinate command to prevent Mac from entering sleep.

caffeinate -i npm run dev

Some other parameters

❯ caffeinate --help
caffeinate: illegal option -- -
usage: caffeinate [-disu] [-t timeout] [-w Process ID] [command arguments...]
# Prevent machine sleep (run programs in the background, listen to music, etc., the screen will automatically close after a period of time)
caffeinate

# Prevent screen sleep (-d display)
caffeinate -d

# Prevent sleep for a period of time (-t [prevent sleep seconds])
caffeinate -t 3600

# This command keeps the process running
caffeinate -w <进程号>

Reference

> cd ..

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