Bash function to sync git repository. I use this when automatically pulling changes from many repositories so that I don't have to open each repo and determine if it's dirty or clean.

git-sync.sh

# Determine if we need to stash or not when updating git repository
function git-sync {
  untracked=$(expr `git status --procelain 2>/dev/null | grep "^??" | wc -l`)
  if [ "$untracked" = "0" ]; then
    git pull --rebase
  else
    git stash
    git pull --rebase
    git stash apply
  fi
}