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I'm a .NET developer and a long time Windows user. Recently I've been working a little bit on OS X Leopard, trying to learn iPhone development.

So far so good - Mac OS X seems like a great operating system.

I'm assuming that temporary files and logs are being written somewhere, and programs leave junk behind. So I was wondering, how do you keep your Mac clean (please, no "Macs don't need fixin'" answers)?.

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up vote 4 down vote accepted

I actually never do any maintenance directly since there are quite a few scripts that run weekly and monthly for this purpose.

However I do run OnyX every once in a while to just make sure everything still works fine.

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+1 - Also, repairing permissions seems to help. Yes it's no panacea, but it helps. – EvilChookie Jul 17 '09 at 16:45
OnyX seems nice. Thanks! :) – Igal Tabachnik Jul 17 '09 at 16:57
You will rarely (if never) have to "repair" permissions. That's only a task that should be done when there's a real permissions problem. Google a little bit, it can cause more harm than good. Onyx (and Cocktail if you feel like paying) are great. I have Cocktail and 'tis nice. – Martín Marconcini Aug 18 '09 at 13:44

The only thing I can think of is that deleted applications may leave behind support files in ~/Library and /Library. You can have these automatically deleted when you delete an Application using AppTrap (unfortunately it is no longer being developed. Hazel does a similar thing, but that is shareware). Aside from that, there is nothing else that intrinsically needs cleaning. Logs and temp files are automatically cleaned.

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