Warning script about commit to master branch(git pre-commit hook)

install.sh

#!/bin/sh

mkdir -p ~/.git_template/hooks
git config --global init.templatedir ~/.git_template
cat pre-commit >> ~/.git_template/hooks/pre-commit
chmod +x ~/.git_template/hooks/pre-commit

pre-commit

#!/bin/sh


MASTER='master'



yasuno () {
  printf "\e[33;1m${1} \e[37;1m[y/N]: \e[m"
  exec < /dev/tty
  read yn
  case $yn in
    [yY]*) return 0 ;;
        *) return 1 ;;
  esac
}

CURRENT_BRANCH=`git rev-parse --abbrev-ref HEAD`

if test $CURRENT_BRANCH = $MASTER; then
  yasuno "WARNING: You are on the '$MASTER' branch now.\nDo you REALLY want to commit to the $MASTER branch?"
  exit $?
fi