Very cool command, thanks for posting it.
I just tried it and noticed that it prints out the fields 3,1,6 but in the order 1,3,6. It went through a file with 10^6 lines in about 7 seconds and 2*10^6 lines in 10 seconds. So 10^9 lines should take about an hour. My test data only had 9 fields not 50.
I'm running on Windows XP by the way with 8 cores. I Installed GNU textutils a long time ago and am always surprised when I find out about these things I have but don't how to use.
Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
Read Where should I post X? if you're not absolutely sure you're posting in the right place.
Please read these before you post! —
Posts may use any of the Perl Monks Approved HTML tags:
You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
- a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
Link using PerlMonks shortcuts! What shortcuts can I use for linking?
See Writeup Formatting Tips and other pages linked from there for more info.
| & || & |
| < || < |
| > || > |
| [ || [ |
| ] || ] ||