Bash script to find problems with git repositories.

git-problems

#!/bin/bash

# Author: Gonçalo Baltazar <me@goncalomb.com>
# I place this code in the public domain.

# Finds problems with git repositories that might lead to information loss
# in case of losing the local copy.
# Things like: uncommitted changes, untracked files, commits not pushed, etc.

# Put this script on your PATH. Then run 'git-problems' on a git repository or
# directory with multiple repositories.

# Tested on Linux Mint.

function error-msg {
	if [ -z "$ERROR" ]; then echo; fi
	ERROR="TRUE"
	echo -e "  \e[33m$1\e[0m"
}

HOME_IS_HERE=""
if [ "$HOME" = "$(pwd -P)" ]; then
	HOME_IS_HERE="true"
fi

for GIT_DIR in $(find -type d -name .git -prune | sort 2>/dev/null); do (
	WORKSPACE_DIR=$(dirname -- "$GIT_DIR")
	cd "$WORKSPACE_DIR"
	if [ "$WORKSPACE_DIR" = "." ]; then
		echo -en "(this repository):"
	elif [ -n "$HOME_IS_HERE" ]; then
		echo -en "~${WORKSPACE_DIR:1}:"
	else
		echo -en "$WORKSPACE_DIR:"
	fi
	ERROR=""
	#git update-index -q --refresh
	#if git rev-parse HEAD 1>/dev/null 2>/dev/null && ! git diff-index --quiet HEAD; then
	if ! (git diff --quiet && git diff --cached --quiet); then
		error-msg "Workspace has uncommitted changes"
	fi
	if [ -n "$(git ls-files --exclude-standard --others)" ]; then
		error-msg "Workspace has untracked files"
	fi
	if ! git symbolic-ref HEAD 1>/dev/null 2>/dev/null ; then
		error-msg "HEAD detached at $(git rev-parse --short HEAD)"
	fi
	STASH_COUNT=$(git stash list 2> /dev/null | wc -l)
	if [ "$STASH_COUNT" != "0" ]; then
		error-msg "The stash has $STASH_COUNT entry(ies)"
	fi
	while read CODE; do
		eval $CODE
		if [ -z "$REMOTE" ]; then
			error-msg "'$LOCAL' has no tracking branch"
		else
			LOCAL_REV=$(git rev-parse "$LOCAL")
			REMOTE_REV=$(git rev-parse "$REMOTE")
			MERGE_BASE_REV=$(git merge-base "$LOCAL" "$REMOTE")
			if [ "$LOCAL_REV" = "$REMOTE_REV" ]; then
				: # branch up-to-date
			elif [ "$LOCAL_REV" = "$MERGE_BASE_REV" ]; then
				error-msg "'$LOCAL' is behind '$REMOTE' by $(git rev-list $LOCAL_REV...$REMOTE_REV --count) commit(s)"
			elif [ "$REMOTE_REV" = "$MERGE_BASE_REV" ]; then
				error-msg "'$LOCAL' is ahead of '$REMOTE' by $(git rev-list $LOCAL_REV...$REMOTE_REV --count) commit(s)"
			else
				error-msg "'$LOCAL' and '$REMOTE' have diverged"
			fi
		fi
	done < <(git for-each-ref --format="LOCAL=\"%(refname:short)\"; REMOTE=\"%(upstream:short)\"" "refs/heads")
	if [ -z "$ERROR" ]; then
		echo -e " \e[32mOK\e[0m"
	fi
) done