From: "Leo M." <leo.mmcm@...>
Date: 2011-12-21T06:30:04+09:00
Subject: Re: "System" command

Jeremy Bopp wrote in post #1037553:
> On 12/20/2011 10:12 AM, Leo M. wrote:
>> Like the shell?
>
> If you're asking about my efficiency comment, check out the glob and
> similar methods in the Dir class:
>
> http://rubydoc.info/stdlib/core/1.9.2/Dir.glob
>
> It's possible to skip Ruby entirely and use just the shell for many
> things, and you may find that to be more efficient by some measures
> depending on your needs.  My comment, however, was more about avoiding
> calling out to external programs when Ruby itself offers similar
> functionality built-in.  In this case, calling ls is needlessly
> wasteful.
>
> Whether or not you should call out to external programs for processing
> of data will vary on a number of factors; including performance,
> availability, cross platform compatibility, and ease of output
> consumption to name a few.  Be mindful of that when you start coding
> calls to such programs. :-)
>
> -Jeremy

Thanks, yes of course. LS was just a trial to understand the mechanism 
behind the courtain :)

Besides of this, try out the system option or `` to launch rails 
commands while in rails console! I found it very useful!

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