Check if directory is a git repo or not

check-git-2.sh

# from https://stackoverflow.com/questions/2180270/check-if-current-directory-is-a-git-repository
[ -d .git ] || git rev-parse --git-dir > /dev/null 2>&1

check-git.sh

# Copyright (C) 2006,2007 Shawn O. Pearce <[email protected]>
# Conceptually based on gitcompletion (http://gitweb.hawaga.org.uk/).
# Distributed under the GNU General Public License, version 2.0.

if [ -d .git ]; then
  echo .git;
else
  git rev-parse --git-dir 2> /dev/null;
fi;