git-status

#!/bin/bash

# recursively checks directories to see whether they're git repositories
# if so, the repo is checked to see whether there are unpushed commits
RES=""

my_ls() {
  # save current directory then cd to "$1"
  pushd "$1" >/dev/null

  if find . -maxdepth 1 | grep -q "^./.git$" ; then
    if git remote | grep -q "origin"; then
      BRANCH=$(git branch | grep "\*" | cut -c 3-)
      CNT=$(git shortlog origin/master.."$BRANCH" -s | grep -o -E '[0-9]+')
      AUTHORS=$(echo "$CNT" | wc -l)
      TOTAL=$(echo "$CNT" | tr '\n' '+' | sed -e "s/+$//g")
      TOTAL=$(echo "$TOTAL" | bc) # `bc` in the pipe above leads to a syntax error
      if [ "$CNT"  ]; then
        REPO=$(basename "$PWD")
        if [ "$AUTHORS" -eq 1 ]; then
          RES="$RES"$'\n'$REPO": $CNT commits"
        else
          RES="$RES"$'\n'$REPO": $TOTAL commits ($AUTHORS authors)"
        fi
    fi
  fi
  elif find . -maxdepth 1 | grep -q "^./.hg$" ; then
    echo "ignoring mercurial repos" > /dev/null
  else
    for file in * ; do
      if [[ -d "$file" ]]; then
        my_ls "$file"
      fi
    done
  fi

  # restore directory
  popd >/dev/null
}

my_ls "$1"

if [ "$RES" ]; then
  echo "${RES:1}"
fi