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Re: Fast forward-backward (write-read)

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Date	Wed, 24 Oct 2012 09:12:16 +0100
From	Tim Golden <mail@timgolden.me.uk>
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Subject	Re: Fast forward-backward (write-read)
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On 24/10/2012 08:07, Virgil Stokes wrote:
> On 23-Oct-2012 22:03, Cousin Stanley wrote:
>> Virgil Stokes wrote:
>>
>>> Not sure about "tac" --- could you provide more details on this
>>> and/or a simple example of how it could be used for fast reversed
>>> "reading" of a data file ?
>>    tac is available as a command under linux ....
>>
>>    $ whatis tac
>>    tac (1) - concatenate and print files in reverse
>>
>>    $ whereis tac
>>    tac: /usr/bin/tac /usr/bin/X11/tac /usr/share/man/man1/tac.1.gz
>>
>>    $ man tac
>>
>>    SYNOPSIS
>>      tac [OPTION]... [FILE]...
>>
>>    DESCRIPTION
>>
>>      Write each FILE to standard output, last line first.
>>
>>      With no FILE, or when FILE is -, read standard input.
>>
>>
>>    I only know that the  tac  command exists
>>    but have never used it myself ....
>>
>>
> Unfortunately, I may be forced to process the data on a Windows
> platform; but, thanks Cousin for the Linux tip.

Well, addressing that specific point, tac is available for Windows:

  http://unxutils.sourceforge.net/

No idea how efficient it is...

TJG

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Thread

Re: Fast forward-backward (write-read) Virgil Stokes <vs@it.uu.se> - 2012-10-23 19:17 +0200
  Re: Fast forward-backward (write-read) Cousin Stanley <cousinstanley@gmail.com> - 2012-10-23 20:03 +0000
    Re: Fast forward-backward (write-read) Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2012-10-24 01:20 -0400
    Re: Fast forward-backward (write-read) Virgil Stokes <vs@it.uu.se> - 2012-10-24 09:07 +0200
    Re: Fast forward-backward (write-read) Tim Golden <mail@timgolden.me.uk> - 2012-10-24 09:12 +0100

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