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| No such thing as a small change | |
| PerlMonks |
Re^2: selecting columns from a tab-separated-values fileby ibm1620 (Sexton) |
| on Jan 22, 2013 at 04:09 UTC ( #1014563=note: print w/ replies, xml ) | Need Help?? |
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Yes, 10^9 records. The entire file is more like 80GB, since there are frequent empty fields. I estimated the time for my Perl program to pass the entire file to be around 5 hours. Don't know how much faster cat is, but it's GOT to be faster than that (I'm not at work at the moment).
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