get the current song from iTunes

now_playing.sh

#! /bin/sh

# mostly from http://www.macosxhints.com/article.php?story=2004070301135736
# using with GeekTool


if ps x \
    | grep [/]Applications/iTunes.app/Contents/MacOS/iTunes \
    > /dev/null; then
        osascript - <<'OSASCRIPT'
        tell application "iTunes"
          if not (exists current track) then return
            
          set sup to (get player state as string)
          if not (sup = "playing") then return
          
          set intro to "Now playing "
          set sep to " by "
          set song to current track
          set result to intro & name of song as text & sep & artist of song
        end tell
OSASCRIPT
fi