Ryan Orr's Bitcontrol

Recently, I’ve been traveling quite a bit, which means spending time away from a sleep environment that I’ve become accustom too. At night, when I first go to bed, I like to listen to the radio for an hour or so on a sleep timer, but while on the road I don’t usually have that option. In order to fix the problem, I whipped up a quick BASH shell script to pause iTunes after a preset amount of time. If no time parameter is passed, it defaults to 60 mins.

Download: itunes_sleep_timer.sh

#!/bin/bash

itunes_grep_string="/Applications/iTunes.app/Contents/MacOS/"
time_to_close=60 #Minutes

if [ ! -z $1 ]; then
	time_to_close=$1
fi

itunes_pid=`ps aux | grep -i "$itunes_grep_string" | grep -v grep | awk '{print $2}'`
elapsed_minutes=0

if [ "$itunes_pid" == "" ]; then
	echo "iTunes is not currently running"
	exit 1;
fi

echo "iTunes pid is: $itunes_pid"
echo "iTunes will pause in $time_to_close minutes"

while [ $elapsed_minutes -lt $time_to_close ]; do
	printf "`expr $time_to_close - $elapsed_minutes` minutes remaining\\r"
	sleep 60
	elapsed_minutes=`expr $elapsed_minutes + 1`
done

osascript -e 'tell application "iTunes"' -e "pause" -e "end tell"

UPDATE: October, 4th, 2007

By request (and request, I mean the lame-asses that email me instead of posting a comment), I’ve added a ruby version of this script. It’s the same number of lines, so I’m not sure what benefit your receiving other than being able to verify that the time parameter is an integer.

Download: itunes_sleep_timer.rb

#!/usr/bin/env ruby

itunes_grep_string = "/Applications/iTunes.app/Contents/MacOS/"
time_to_close = 60 #Minutes

if ARGV[0].to_i != 0
  time_to_close = ARGV[0].to_i
end

itunes_pid = `ps aux | grep -i "#{itunes_grep_string}" | grep -v grep | awk '{print $2}'`
elapsed_minutes = 0

if itunes_pid == ""
  STDERR.puts "iTunes is not currently running"
  exit 1
end

puts "iTunes pid is: #{itunes_pid}"
puts "iTunes will pause in #{time_to_close} minutes"

while elapsed_minutes < time_to_close
  printf("%s minutes remaining\\n", time_to_close - elapsed_minutes)
  sleep(60)
  elapsed_minutes = elapsed_minutes + 1
end

`osascript -e 'tell application "iTunes"' -e "pause" -e "end tell"`