Guides

Practical fixes for a Mac that's hot, draining its battery, or holding on to things it shouldn't. Each one starts with the short answer, then the Terminal commands and settings that fix it.

• "Port 3000 is already in use" on Mac: find and stop what's using itFind which process holds a port on macOS and stop it safely, in two commands.
• Why is my Mac so hot? How to find what's heating itFind the app or process that's heating your Mac, and cool it down without restarting.
• Why is my MacBook battery draining overnight, while it sleeps?See when your Mac woke up overnight and what kept it awake, then stop the drain.