Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I run Windows 7.

I notice that there's an environment variable called asl.log. What is this thing? Who puts it there?

What's the purpose of it?

I searched and found only references to MacOS and Apple System Log.
But as I said, this is a Windows7 machine from Dell. It doesn't run MacOS.

share|improve this question
Hint: Apple iTunes – grawity Nov 20 '10 at 21:00
Yep, I have it on an XP laptop with iTunes installed too. – Mark Hurd Sep 28 '11 at 17:12
up vote 6 down vote accepted

I have it too in W7. A SYSTEM environment variable asl.log with the value Destination=file

Found this reference in the register: HKEY_CURRENT_USER\Software\Apple Inc.\ASL\filenames\asl.log value REG_SZ asl.103843_28May11.log

I am pretty sure it is an Apple thing.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.