Prevent pushing to master in your git project!

pre-push

# PUT THIS IN .git/hooks/pre-push IN YOUR PROJECT.
#!/bin/bash

protected_branch='master'
current_branch=$(git symbolic-ref HEAD | sed -e 's,.*/\(.*\),\1,')
push_command=$(ps -ocommand= -p $PPID)

if [ $current_branch = $protected_branch ] || [[ $push_command =~ $protected_branch ]]
then
  read -p "You're about to push master, is that what you intended? [y|n] " -n 1 -r < /dev/tty
  echo
  if echo $REPLY | grep -E '^[Yy]$' > /dev/null
  then
    exit 0 # push will execute
  fi
  exit 1 # push will not execute
else
  exit 0 # push will execute
fi