how to show hidden and . files in mac code example

Example 1: hide hidden files mac

defaults write com.apple.Finder AppleShowAllFiles false
#Change 'false' by 'true' to show hidden files
killall Finder

Example 2: mac show hidden files

>> To show hidden files, hold down: Cmd + Shift + . (dot) 
  
 >> Hold down Cmd + Shift + . (dot) a second time to hide the files again.