From: Marc Heiler <shevegen@...>
Date: 2011-08-20T03:52:39+09:00
Subject: Accidentally killing coreutils - an idea to use ruby?

Lately I managed to kill all binaries that typically belong to
coreutils. (Also had no net available on that machine and no backup)

I.e. rm cp sleep echo touch etc... were all suddenly unavailable.

I managed to recover thanks to busybox. So everything is fine. BUT, that
got me thinking...

Ruby still worked nicely and the tasks such as "mv", "cp" etc.. work in
pure ruby too.

Now here is my fairly odd question - when I run something like
"./configure" and it is checking for something like "cp", and if it can
not find it, it will state "cp: command not found", or something, is
there a way to somehow use ruby instead of that?

For example, "cp" could perhaps be a ruby file and inside that file
could be

require 'fileutils'
FileUtils.cp

Would that work?

Additionally, would there be a way to completely control all aspects of

system()

from within a script, so that I could associate something like "cp" with
a specific action using ruby code instead?

Yeah, I have fairly weird ideas sometimes. :-)

And no, I have not tested anything yet... but I figure that if ruby is
working somewhere, one could perhaps use pure ruby anyway ... at least
for the basic file operations.

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