git-repo

#!/bin/sh
set -eu

usage () {
    echo "usage: git repo [-qh]" >&2
    echo >&2
    echo "Options:" >&2
    echo "-q    Quiet (only return with exit code 0 if a git repo is found)" >&2
    echo "-h    Show this help" >&2
}

quiet=0
while getopts qh flag; do
    case "$flag" in
        q) quiet=1;;
        h) usage; exit 2;;
    esac
done
shift $(($OPTIND - 1))

if [ $quiet -eq 1 ]; then
    git rev-parse --git-dir >/dev/null 2>/dev/null
else
    git rev-parse --git-dir
fi