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Asked: 2026-05-11T16:14:31+00:00

I am doing some text processing on a unix system. I have access to

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I am doing some text processing on a unix system. I have access to the command line on this machine and it has Python, Perl and the default text processing progams installed, awk etc.

I have a text file that looks like below:

2029754527851451717 
2029754527851451717 
2029754527851451717 
2029754527851451717 
2029754527851451717 
2029754527851451717 1232453488239 Tue Mar  3 10:47:44 2009
2029754527851451717 1232453488302 Tue Mar  3 10:47:44 2009
2029754527851451717 1232453488365 Tue Mar  3 10:47:44 2009
2895635937120524206 
2895635937120524206 
2895635937120524206 
2895635937120524206 
2895635937120524206 
2895635937120524206 
5622983575622325494 1232453323986 Thu Feb 12 15:57:49 2009

It is basically 3 rows: ID ID Date

I am looking to remove all the lines that do not have 2 ID’s and a Date. So the finising results will be like this:

2029754527851451717 1232453488239 Tue Mar  3 10:47:44 2009
2029754527851451717 1232453488302 Tue Mar  3 10:47:44 2009
2029754527851451717 1232453488365 Tue Mar  3 10:47:44 2009
5622983575622325494 1232453323986 Thu Feb 12 15:57:49 2009

How would you guys suggest doing this? In total the text file is around 30,000 lines long.

Cheers

Eef

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1 Answer

  1. Editorial Team

    With awk:

    awk 'NF > 2' input_file > output_file
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