Git-hook giving a warning when you try to push to the 'master' branch.

pre-push

#!/bin/bash
# Save this file as gimli/.git/hooks/pre-push and make it executable.

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

if [ $protected_branch = $current_branch ]
then
    read -p "GIMLi encourages developers to push only to the 'dev' branch. You're about to push to '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
    fi
    exit 1
else
    exit 0
fi