Git ahead and behind info

git-ahead-behind.sh

# add this function to your .bash_profile to be able to use it everywhere
# usage: git-ahead-behind [local-branch] [remote-branch]
function git-ahead-behind() {
  branch="`git symbolic-ref --short -q HEAD`";
  loc="${1-$branch}";
  remote="${2-origin/$loc}";
  
  git fetch $remote &> /dev/null
  wait
  
  out="ahead: `git rev-list $remote..$loc --count`";
  out="$out\nbehind: `git rev-list $loc..$remote --count`";
  
  echo $out;
}