outputs the sha1 of the last commit, plus whether the repo is in a dirty state or not

gistfile1.sh

#!/bin/bash

last=$(git log -1 --format="%h");

status=$(git status --porcelain | grep '^ M' | head -n 1)

if [ x"" = x"$status" ]; then
    maybe_dirty=""
else
    maybe_dirty="-dirty"
fi

echo $last$maybe_dirty