Avoid commits to the master branch

pre-commit

#!/bin/sh
#
# .git/hooks/pre-commit
# Avoid commits to the master branch
# dbs 2015-11-23
#
# You need to copy this file to .git/hooks/ in each relevant repository, and
# then you need to make the file executable:
#   chmod ugo+x .git/hooks/pre-commit
#
# To circumvent this restriction, use --no-verify, e.g.
#   git commit --no-verify -m 'Fix error in master branch'

if [ "$(git symbolic-ref HEAD)" = "refs/heads/master" ]; then
  echo "Sorry Tim, you're trying to commit to master again."
  echo "To insist on your right to do so, please use '--no-verify'."
  exit 1
fi

exit 0