Prevent git push to master git prehook

pre-push

#!/bin/bash
# Prevents force-pushing to master.
# Based on: https://gist.github.com/stefansundin/d465f1e331fc5c632088 
# Global installation instructions
# mkdir $HOME/.githooks
# git config --global core.hooksPath $HOME/.githooks
# curl -fL -o $HOME/.githooks/pre-push https://gist.githubusercontent.com/area73/9783f2616c82dc451fd070661d3008d2/raw/ac5feeed9f4766195e2ec6cd6d85d3a3863cc128/pre-push
# chmod +x $HOME/.githooks/pre-push
# Uninstall:
# rm $HOME/.githooks/pre-push

BRANCH=`git rev-parse --abbrev-ref HEAD`
PUSH_COMMAND=`ps -ocommand= -p $PPID`

if [[ "$BRANCH" == "master" && "$PUSH_COMMAND" =~ push|force|delete|-f ]]; then
  echo
  echo "Prevented force-push to $BRANCH. This is a very dangerous command."
  echo "If you really want to do this, use --no-verify to bypass this pre-push hook."
  echo
  exit 1
fi

exit 0