So, one file might not have columns 1 3 and 6

What does that mean? ITYM you want to output a file missing any three columns.

(Incidentally i wonder why you want to do that for all combinations of three columns.)

I want to create files for all combinations of 10 columns .. making 120 files in total.
How strange!! Especially since Choose(13,10)=Choose(13,3)=286. Whatever, I would go for some combinatorial module and then slicing.

In reply to Re: what on earth is going on? by blazar
in thread what on earth is going on? by Angharad

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