Shell script to list Git repositories

lsg

#!/bin/sh
# -*- mode: shell-script; sh-shell: sh; coding: utf-8; -*-
usage() {
    echo "Usage: $(basename $0) [-h/--help]"
}

if [ $# -eq 1 ] && ( [ "$1" = "-h" ] || [ "$1" = "--help" ] ); then
    usage
    echo "List Git repositories."
    exit
elif [ $# -gt 0 ]; then
    usage >&2
    exit 2
fi

find -type d -name .git -exec dirname {} + |
    sed 's#^\./##' |
    sort |
    xargs -r ls -1d --color=auto