show git ahead and behind info for branches vs origin/master

git-branches-vs-origin-master

#!/bin/bash
# by http://github.com/jacobevans
# -- Added some nice color/formatting
# modified from http://github.com/kortina
# modified from http://github.com/jehiah
# this prints out branch ahead/behind status vs origin/master for all branches

# example:
# $ git branch-status
# dns_check (ahead 1) | (behind 112) origin/master
# master (ahead 2) | (behind 0) origin/master

git for-each-ref --format="%(refname:short) %(upstream:short)" refs/ | \
while read local remote
do
    if [ -x $remote ]; then
        branches=("$local")
    else
        branches=("$local" "$remote")
    fi;
    for branch in ${branches[@]}; do
		if [ "$branch" != "origin/master" ]; then
	        master="origin/master"
	        git rev-list --left-right ${branch}...${master} -- 2>/dev/null >/tmp/git_upstream_status_delta || continue

	        LEFT_AHEAD=$(grep -c '^<' /tmp/git_upstream_status_delta)
	        RIGHT_AHEAD=$(grep -c '^>' /tmp/git_upstream_status_delta)

			if [[ $LEFT_AHEAD -gt 0 || $RIGHT_AHEAD -gt 0 ]]; then
	 			printf " - \033[1m%-50s\033[0m (" $branch
			else
				printf " - %-50s (" $branch
			fi;
			if [[ $LEFT_AHEAD -gt 0 ]]; then
				printf "\033[36mahead %3d\033[0m" $LEFT_AHEAD
			else
				printf "ahead %3d" $LEFT_AHEAD
			fi;
			echo -n ") | ("
			if [[ $RIGHT_AHEAD -gt 0 ]]; then
				printf "\033[31mbehind %3d\033[0m" $RIGHT_AHEAD
			else
				printf "behind %3d" $RIGHT_AHEAD
			fi;
	        echo -e ") $master"
		fi;
    done
done | sort -k5rn -k8n | uniq