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.
docker system prune: How to clear Docker cache on MacHow docker system prune clears Docker cache on a Mac, how to delete Docker images and build cache, and what to do so you don’t lose volumes.
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 check Mac model and yearHow to check Mac model, year and chip in About This Mac, find the model identifier and serial number, and identify a Mac that won’t turn on.
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 empty Trash on MacHow to empty Trash on Mac, delete one item right away, empty it automatically after 30 days and what to do when the Trash won’t empty.
How to uninstall Python on Mac completelyHow to uninstall Python on a Mac: from python.org, Homebrew or pyenv, what to keep (Apple’s own python3) and how to check it’s gone.
How to open Terminal on Mac and use itHow to open Terminal on Mac with Spotlight or Finder, open it at a folder, run the first safe commands and stop a command with Control-C.
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 delete a venv or virtualenv on MacHow to delete a Python venv or virtualenv on a Mac safely, what you lose, and how to create it again later from requirements.txt or pyproject.toml.
How to delete downloads on MacHow to delete downloads on Mac: find the biggest and oldest files in the Downloads folder, remove old installers and clear the browser’s list.
How to change default browser on MacHow to change default browser on Mac in System Settings or from the browser itself, how to switch back to Safari, and where the default email app is set.
How to find Wi-Fi password on MacHow to find a Wi-Fi password on Mac in the Passwords app or Wi-Fi settings, share it with a QR code, and where to look on macOS Sonoma.
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 convert HEIC to JPG on MacHow to convert HEIC to JPG on Mac for free: one photo in Preview, many at once with Finder Quick Actions, from Photos, and how to make an iPhone shoot JPEG.
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.
yarn cache clean: how to clear Yarn cache on MacHow to clear Yarn cache on a Mac: yarn cache clean in Yarn 1 (Classic), --all and --mirror in Yarn 2 and later, and where each version keeps it.
How to type emoji on MacHow to type emoji on Mac: Control-Command-Space or the Globe key opens the emoji picker. Search, skin tones, favorites and the Globe key setting.
How to right click on MacHow to right click on Mac: Control-click, a two-finger click on a MacBook trackpad, the right side of a Magic Mouse, or any two-button mouse.
How to check battery health on MacBookHow to check battery health on a MacBook: Maximum Capacity and condition in Battery settings, the cycle count in System Information, and Apple’s limits.
How to undo on Mac: Command-Z and redoHow to undo on Mac with Command-Z or Edit › Undo, redo with Shift-Command-Z, undo a file move or delete in Finder, and go back to an earlier version.
How to delete conda environments on MacHow to delete conda environments on a Mac with conda remove or Anaconda Navigator, export them first, and clear the package cache with conda clean.
How to delete Ollama models on MacHow to delete Ollama models on a Mac with ollama rm, see which models take space, stop a running model and find where models are stored.
Mac not turning on: what to doMac not turning on? Check the power and the display, force a restart, reset the SMC on Intel, revive the firmware, and know when to contact Apple.

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