From: Ruby Newbee <rubynewbee@...>
Date: 2010-02-05T19:43:22+09:00
Subject: add some content to a file

Hello,

I want to modify a file, begin from X line (X is line number),
inserting some content into it.
I tried scripting it with ruby but couldn't find a correct way.
Can you help with it? Thanks.

Jenn.