Python lesson please

[gene heskett]

Greetings experts:

I just dl'd the duqu driver finder script from a link to NSS on /., and 
fixed enough of the tabs in it to make it run error-free.  At least python 
isn't having a litter of cows over the indentation now.

But it also runs instantly on linux.

This line looks suspect to me:
 rootdir = sys.argv[1]

And I have a suspicion it is null on a linux box.

How can I fix that best?

Thanks.

Cheers, Gene
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