unhide4.sh

#!/usr/bin/env bash

if showall=$(defaults read com.apple.finder AppleShowAllFiles) && [[ $showall = TRUE ]]; 
then defaults write com.apple.finder AppleShowAllFiles FALSE; 
else defaults write com.apple.finder AppleShowAllFiles TRUE; 
fi

killall Finder

####

#!/usr/bin/env bash

if [[ "$(defaults read com.apple.finder AppleShowAllFiles)" = "TRUE" ]]; 
then defaults write com.apple.finder AppleShowAllFiles FALSE;
else defaults write com.apple.finder AppleShowAllFiles TRUE;
fi

killall Finder