Press Cmd + Shift + . (period) inside any Finder window or file picker. Works instantly, no restart needed.
If you've ever needed to access hidden files on your Mac—like .bashrc , .gitignore , or system configs—you know Finder hides them by default. Here's the quick way to show them. show hidden finder
defaults write com.apple.Finder AppleShowAllFiles true && killall Finder Change true to false to hide them again. Press Cmd + Shift +
Files/folders starting with a dot ( . ) are hidden to prevent accidental edits. Great for your .ssh or .zshrc , but don't move/rename system ones. but don't move/rename system ones.