From: ichi@ihug.co.nz
To: Matthew Stapleton <matthewstapleton@juno.com>
Cc: linux-newbie@vger.kernel.org
Subject: Re: inverting a list
Date: Sun, 21 Jul 2002 12:31:32 +0000 [thread overview]
Message-ID: <3D3AA9A4.AD7C28E@ihug.co.nz> (raw)
In-Reply-To: 20020720.175417.-315329.2.matthewstapleton@juno.com
Matthew Stapleton wrote:
>
> Can I use linux text utilities to invert the lines of
> a text file? Say that the lines of the file are 50.
> (1,2, ...50) How can I change the order the of lines
> so that line 1 is now line 50?
Here's one off the top of my head. I'm sure
that somebody can come up with a better one.
---------------------------
#!/bin/bash
i=`cat $1|wc -l`
until [ $i = 0 ]
do head -n $i $1|tail -n 1
let i=i-1
done
---------------------------
Cheers,
Steven
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next prev parent reply other threads:[~2002-07-21 12:31 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-07-20 21:54 inverting a list Matthew Stapleton
2002-07-21 12:31 ` ichi [this message]
2002-07-21 3:37 ` lawson_whitney
-- strict thread matches above, loose matches on Subject: below --
2002-07-21 3:30 Matthew Stapleton
2002-07-21 3:53 Matthew Stapleton
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