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From: wyle@nessie.cs.id.ethz.ch (Mitchell Wyle)
Newsgroups: comp.editors
Subject: Re: Counting and appending an integer in VI?
Keywords: numbers in vi? no
Message-ID: <1991Jun26.093449.19748@bernina.ethz.ch>
Date: 26 Jun 91 09:34:49 GMT
References: <1991Jun26.031232.29957@massey.ac.nz>
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In <1991Jun26.031232.29957@massey.ac.nz> 
R.Singh@massey.ac.nz (R. Singh) asks:

>Assume a file with 10 foxes.
>
>I want to change it to
>
>foxes1
>foxes2
>[...]
>foxes10
>
>Is it possible in VI. [?]

No.  Use awk.   awk '{print $0 ++i}' < infile > outfile
From inside vi:  :%!awk '{print $0 ++i}'
If you do it often, in ~/.exrc, map ;nu :%!awk '{print $0 ++i}'^V^M
If you want to do it only on the current paragraph: }!awk '{print $0 ++i}'
etc.