Deletes local git repos with no remote equivalent (i.e., branches deleted remotely)

local-git-cleanup.sh

#!/usr/bin/env bash

set -e

# Accept 'D' flag
while getopts ":D:" flag; do
	case "$flag" in
		# Assign the arg associated with -D to $directory
		D)	directory="$OPTARG" ;;
		*)	echo "$0: Option -$OPTARG requires an argument." 1>&2
			exit 1
			;;
	esac
done

# Check that all arguments were passed
if [[ -z $directory ]]; then
	echo "Usage: $0 -D path" >&2
	exit 0
fi

if [[ -z $(command -v git) ]]; then
	echo "Please install git."
	exit 0
elif ! [[ $(cd $directory && git rev-parse --is-inside-work-tree 2> /dev/null) == "true" ]]; then
	echo "Please ensure $directory is a git repo."
	exit 0
fi

# get local branches, excluding HEAD
readarray -t local <<< $(git branch | grep -v "*" | sed -e 's/^[[:space:]]*//')

for i in "${local[@]}"; do
	# if no remote, will be blank
	if [[ -z $(git branch -r --contains "$i") ]]; then
		echo "Local branch '$i' has no remote equivalent. Deleting."
		git branch -D $i \
			&& echo "Success!" \
			|| (echo "Failure!"; exit 1)
	fi
done