Find File Path Pattern in all git branches

find_in_branches

#!/bin/bash

# Authored by Pete Otaqui <pete@otaqui.com>
#
# Core code taken from StackOverflow
# http://stackoverflow.com/questions/372506/how-can-i-search-git-branches-for-a-file-or-directory
# 
# The author has placed this work in the
# Public Domain, thereby relinquishing all
# copyrights. Everyone is free to use, modify,
# republish, sell or give away this work
# without prior consent from anybody.

usage() {
    echo
    echo $0 - Search for file paths in git branches
    echo
    echo Use this script to apply an extended regex
    echo search to all file names in all local git
    echo branches.  Very helpful in finding files
    echo that you created "somewhere" or that have
    echo been moved
    echo 
    echo Usage:
    echo $0 path/to/lost_file.*
    echo
}

[[ -n "$1" ]] || { usage; exit 0 ; }

for branch in `git for-each-ref --format="%(refname)" refs/heads`;
do
    echo
    echo $branch :;
    git ls-tree -r --name-only $branch | grep -E "$1"
done