This commands are really useful if you are looking for a folder(s) that you want to edit or copy or make a Mac OS bootable (Show Hidden Files On Mac).

Open up your terminal and paste this code without quotation mark “defaults write com.apple.finder AppleShowAllFiles YES”. To hide those hidden folders again, paste this code on your terminal without quotation mark “defaults write com.apple.finder AppleShowAllFiles NO” and you files will be back to normal.