Git pre-push hook that will throw an error if you try pushing any code with `DONT PUSH ME` in it

pre-push

#!/bin/bash
 
# File lives in .git/hooks/pre-push
 
# If the following text is found anywhere in the source for HEAD, we will prevent pushing
dont_push_flag="DONT PUSH ME"
 
flag_found=`git grep --color "$dont_push_flag" HEAD`
if [ -n "$flag_found" ]
then
    # Display which commit the first occurence of the flag was found and exit failure
        commit=`git log --pretty=format:'%Cred%h%Creset' -S "$dont_push_flag" | tail -n1`
            echo "Found $flag_found, first occurence was in $commit, not pushing"
                exit 1
            fi
            exit 0
fi