From: Roger Pack <rogerpack2005@...>
Date: 2008-06-26T09:59:30+09:00
Subject: how to write in the middle of a file

Greetings all.  For some reason the answer to this stumps me.
Say I have an existing file, 1K long, and I want to write something
right in the middle of it, without changing the file size.
I would have thought that
a = File.open 'file', 'a+'
a.seek 500
a.write 'abc'
a.close

would work but doesn't seem to.  Thoughts?
-R
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