git hook with confirmation message

pre-push

#!/bin/sh
# https://gist.github.com/shabith/653a29ed1e9835e71fb0a4662523cf85 
# git hook with confimation message
# this pre-push git hook will show a confirmation message and according to the answer (y or n) by user it will proceed or exit.
# Please note that this has been tested only in OSX terminal

# Allow us to read user input below, assigns stdin to keyboard
exec < /dev/tty

branch=$(git symbolic-ref HEAD | sed -e 's,.*/\(.*\),\1,')
if [ "master" = $branch ]; then
	while true; do
		echo "\n";
		read -p "🚨 👮 Did you merge with the upstream/master branch? (Y/n) " yn
		if [ "$yn" = "" ]; then
			yn='N'
		fi
		case $yn in
			[Nn] ) echo "\n🙅‍ Please merge with upstream/master branch before pushing to orgin/master. Thanks!\n"; exit 1;;
			[Yy] ) echo "\n👍🏽 All good then. Thanks!\n"; break; exit 0;;
			* ) echo "\n💀 Please answer y or n for Yes 👍🏽 or No 👎🏽 \n"; exit 1;;
		esac
	done
fi

exit 0