How to check RAM on Mac and free it upHow to check RAM on Mac in About This Mac and Activity Monitor, read memory pressure and swap, and what clearing RAM on a Mac really means.
How to select multiple files on MacHow to select multiple files on Mac: Command-click, Shift-click, Command-A and dragging a box, with a mouse or on a MacBook trackpad.
How to lock screen on MacHow to lock screen on Mac: Control-Command-Q, the Apple menu, Touch ID or a hot corner, and how to make the Mac lock itself when you step away.
How to merge PDF files on MacHow to merge PDF files on Mac for free: in Preview by dragging pages, with Edit › Insert, or in Finder with Quick Actions › Create PDF.
How to clear Android Studio cache on MacHow to clear Android Studio cache on a Mac with File › Invalidate Caches, delete caches of old versions, and what not to delete: emulators and the SDK.
How to boot Mac in safe modeHow to boot a Mac in safe mode on Apple silicon and Intel, how to tell it worked, what safe mode does and how to leave it.
How to create a folder on MacHow to create a folder on Mac: File › New Folder or Shift-Command-N, a folder on the desktop, New Folder with Selection, and why New Folder is dimmed.
Mac Wi-Fi not working: how to fix itMac Wi-Fi not working or connected without internet? Restart Wi-Fi and the router, rejoin the network, run Wireless Diagnostics, check VPN.
How to uninstall Node.js on Mac completelyHow to uninstall Node.js on a Mac: installed from nodejs.org, with Homebrew or with nvm (nvm uninstall), and how to check that node is gone.
How to back up a MacHow to back up a Mac with Time Machine to an external drive, why iCloud Drive is not a backup, and how to restore with Migration Assistant.
How to clean up your Mac: delete junk files safelyHow to clean up your Mac with MacWashing: find caches, logs, old installers and leftovers of deleted apps, see what each takes and delete it safely.
How to clear history on MacHow to clear history on Mac in Safari, Chrome and Firefox, for the last hour or all time, and what else disappears, including on your iPhone.
How to boot Mac into Recovery ModeHow to boot a Mac into Recovery Mode on Apple silicon and Intel, Internet Recovery key combinations, and what you can do in macOS Recovery.
Mac maintenance: how to keep your Mac clean automaticallyMac maintenance made simple: what a Mac really needs, and how to clean it automatically on a schedule with MacWashing’s auto-clean.
How to show hidden files on MacHow to show hidden files on Mac with Command-Shift-Period in Finder, open the hidden Library folder, list hidden files in Terminal, and what not to touch.
How to reset SMC and NVRAM on MacHow to reset SMC on Mac with Apple silicon, Intel with T2 and older Intel, and how to reset NVRAM (PRAM) on an Intel Mac, with Apple’s exact keys.
How to clear Spotify cache on MacHow to clear Spotify cache on a Mac in Settings › Storage, move the cache to another disk and keep your downloaded music.
How to uninstall Homebrew on MacHow to uninstall Homebrew on a Mac with its official script: what to save first, what happens to apps from casks, and the leftovers to remove.
How to clear Gradle cache on MacHow to clear Gradle cache on a Mac: what ./gradlew clean really deletes, how to stop the daemon and empty ~/.gradle/caches, and old Gradle versions.
How to unzip files on Mac and zip themHow to unzip files on Mac with a double-click, how to zip a file on Mac with Compress, password-protected zips, and what to do with RAR and 7z.
How to flush DNS cache on MacHow to flush DNS on Mac with one Terminal command, clear Chrome’s own DNS cache, and when flushing DNS actually helps.
How to connect AirPods to MacHow to connect AirPods to Mac through your Apple Account or Bluetooth settings, switch sound to them, and what to do if they don’t show up.
How to clear Safari cache on MacHow to clear Safari cache on Mac without losing history, passwords or sign-ins, how to remove one site’s data, and what each option deletes.
How to find and delete node_modules folders on MacFind every node_modules folder on a Mac with its size, delete the ones you don’t need in Finder, Terminal or npkill, and get them back with npm.

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