npr script

#!/bin/bash

name=$(basename "$0")
url="http://npr.ic.llnwd.net/stream/npr_live24"
lock=$(pgrep -u "$(id -u)" -xf "mpg123 $url")

if [[ "$#" = "1" && "$1" = "play" ]]
then

	if [ -n "$lock"  ]
	then
		echo NPR is already playing.
		exit 1
	else
		nohup mpg123 $url >/dev/null 2>&1 &
		echo NPR start playing.
	fi
elif [[ "$#" = "1" && "$1" = "stop" ]]
then
	if [ -n "$lock"  ]
	then
		pkill -u "$(id -u)" -xf "mpg123 $url"
		echo NPR stopped.
	else
		echo NPR is already stopped.
		exit 1
	fi
else
	echo "Usage: $name play | stop"
	exit 1
fi

exit 0