From: Josh Cheek <josh.cheek@...>
Date: 2012-01-07T20:28:58+09:00
Subject: Re: one liner to insert line in a file

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On Sat, Jan 7, 2012 at 1:34 AM, Neubyr Neubyr <neubyr@gmail.com> wrote:

> Got it:
> $ ruby -i -pe 'print "First Line\n" if $.==1' filename.txt
>
> Thanks!
>
> --
> Posted via http://www.ruby-forum.com/.
>
>
Love this!

(btw, you can use `puts` instead of `print "...\n"`)

Downside is it doesn't work on multiple files since Ruby's $. doesn't reset
for each file (not sure why not).

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