Encontre una utilidad en modo grafico para cron
Programas la tarea limpiar x carpetas cada X tiempo, y te olvidas para los restos.
Mac OS X Remove Localized Files: Mac OS X and many Mac OS X applications include files that allow them to be used by people who speak different languages. Even if you choose not to install "extra" languages, your Mac usually has several alternate languages available. And every time you install or update an application, you get more of them. For example, the iTunes 4.0 installer includes Chinese (both Taiwan and mainland), Danish, Dutch, English, Finnish, French, German, Italian, Korean, Japanese, Norwegian, Portuguese, Spanish, and Swedish versions.
If you don't speak some of those languages, you'll never use those files (and never miss them), so you can safely remove them and save disk space. There are other applications that can do this, but to be really useful you'll need to run them again every time you install a new application or update Mac OS X.
These files can take more space than you might guess. The first time I ran this job on my Mac, I saved 322MB of files I was never going to use anyway. With that space I could import a half-dozen of my CDs into iTunes and not be using any more disk space than when I started.
Removing localized files can take a while, mostly taken up in looking for the files, and will take longer on larger drives. For reference it akes about 10-12 minutes on a drive with about 22GB used. This job requires that you configure it, so that you can tell it which languages you want to remove.
Una carpeta a mirar esta en library/receipts que alli guarda todos los repositorios de *.pkg y suele ocupar mucho