Toggle Hidden Files in Finder

Run Automator and create new Application. Add task Run Shell script and paste follow code:

STATUS=`defaults read com.apple.finder AppleShowAllFiles`
if [ $STATUS == YES ];
then
    defaults write com.apple.finder AppleShowAllFiles NO
else
    defaults write com.apple.finder AppleShowAllFiles YES
fi
killall Finder

Save application. From now can Tooggle