Script used to show info about the song playing in moc using GeekTool on OS X

moc-geetktool.sh

#!/bin/bash

# First let's check if moc is running...
if [[ $(ps aux | grep mocp | grep -v grep | wc -l) -gt 0 ]];
then
	
	out=$(/opt/local/bin/mocp -i)
	
	# Parse mocp output.
	while IFS=: read -r field value; do
		case $field in
			Artist) artist=$value;;
			Album) album=$value;;
			SongTitle) title=$value;;
		esac
	done <<< "$out"
	
	if [[ $1 ]]
	then
		case "$1" in
			'artist'|'ARTIST'|'Artist')
				echo $artist
			;;
			'song'|'SONG'|'Song')
				echo $title
			;;
			'album'|'ALBUM'|'Album')
				echo $album
			;;
			*)
				echo "$1"
			;;
		esac
	else
		echo "$title by $artist (album: $album)"
	fi
fi