From: Gary Watson <pfharlock@...>
Date: 2005-12-27T12:57:53+09:00
Subject: Found a neat trick for doing recursive one-liners

This is probably something everyone in here already knows about, but I
thought it was cool enough that I wanted to post about it.

If you want to create a one liner to say search all the *.txt files
in and under the current directory for text matching "Hello", you can do
this

find -name '*.txt' -exec ruby -ne 'print if /Hello/' '{}' ';'

I know you can do this in pure ruby in like 3 lines if you use the Find
module, but I really wanted to do it with a one liner.  Earlier I tried
something like this

ruby -ne 'print if /Hello/' `find -name '*.txt'`

unfortunately that version would fail if there were any spaces in the
filenames.