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Re: Splitting a file from specific column content

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I stand humbled.

On Jan 22, 2012, at 2:25 PM, Tim Chase wrote:

> On 01/22/12 08:45, Roy Smith wrote:
>> I would do this with standard unix tools:
>> 
>> grep '^[012]' input.txt>  first-three-seconds.txt
>> grep '^[34]' input.txt>  next-two-seconds.txt
>> grep '^[567]' input.txt>  next-three-seconds.txt
>> 
>> Sure, it makes three passes over the data, but for 20 MB of data, you
>> could have the whole job done in less time than it took me to type this.
> 
> 
> If you wanted to do it in one pass using standard unix tools, you can use:
> 
> sed -n -e'/^[0-2]/w first-three.txt' -e'/^[34]/w next-two.txt' -e'/^[5-7]/w next-three.txt'
> 
> -tkc
> 
> 
> 


--
Roy Smith
roy@panix.com

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Thread

Splitting a file from specific column content Yigit Turgut <y.turgut@gmail.com> - 2012-01-22 06:32 -0800
  Re: Splitting a file from specific column content Roy Smith <roy@panix.com> - 2012-01-22 09:45 -0500
    Re: Splitting a file from specific column content Roy Smith <roy@panix.com> - 2012-01-22 14:26 -0500
    Re: Splitting a file from specific column content Tim Chase <python.list@tim.thechases.com> - 2012-01-22 13:34 -0600
    Re: Splitting a file from specific column content Roy Smith <roy@panix.com> - 2012-01-22 14:37 -0500
      Re: Splitting a file from specific column content Yigit Turgut <y.turgut@gmail.com> - 2012-01-22 12:16 -0800
  Re: Splitting a file from specific column content MRAB <python@mrabarnett.plus.com> - 2012-01-22 15:19 +0000
  Re: Splitting a file from specific column content Arnaud Delobelle <arnodel@gmail.com> - 2012-01-22 15:39 +0000
    Re: Splitting a file from specific column content Yigit Turgut <y.turgut@gmail.com> - 2012-01-22 08:17 -0800
      Re: Splitting a file from specific column content MRAB <python@mrabarnett.plus.com> - 2012-01-22 16:56 +0000
        Re: Splitting a file from specific column content Yigit Turgut <y.turgut@gmail.com> - 2012-01-22 09:47 -0800
    Re: Splitting a file from specific column content Eelco <hoogendoorn.eelco@gmail.com> - 2012-01-22 12:43 -0800
  Re: Splitting a file from specific column content MRAB <python@mrabarnett.plus.com> - 2012-01-22 16:09 +0000
  Re: Splitting a file from specific column content Arnaud Delobelle <arnodel@gmail.com> - 2012-01-22 19:58 +0000
  Re: Splitting a file from specific column content MRAB <python@mrabarnett.plus.com> - 2012-01-22 20:55 +0000

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