Re: How to extract *and reorder* columns?

In <[email protected]> [email protected] (Bob Proulx) writes:

>kj wrote:
>> I need to extract and reorder some columns from some very large
>> files.  GNU cut will extract the columns nicely and quickly, but
>> won't reorder them.  I can do the reordering easily by piping the
>> output of cut through a perl one-liner, but I'm looking for something
>> faster.
>> 
>> Is there a GNU utility that will do this?

>Not just GNU but POSIX standard.  Use awk.

This is quite a revelation.  I never knew that awk was so much
faster than perl.  I'm getting speed-ups of 6 or 7-fold...

Thanks!

kynn

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