From: "Xavier Noëlle" <xavier.noelle@...>
Date: 2011-03-02T22:29:04+09:00
Subject: Re: exec using sh -c or directly running the command, depending on the system

2011/3/2 Brian Candler <b.candler@pobox.com>:
> Looks like there was a change in Ruby, where perhaps it now does an
> optimisation to check for cases where a shell isn't required (e.g. no
> pipelines or redirection)

That's what I noticed with quoting, but I never managed to take
advantage of this feature.
Well, more precisely, I tried to cheat Ruby by quoting every command
line argument, which works on a system, but not the others (don't know
if it's a matter of version, system, or something else). What works is
to append a fake redirection to the command itself, but it's...ugly ^^

> You could make it consistent by using the multi-argument form of exec,
> which I believe will bypass the shell in all cases:

Works in this case, thanks !

What about the case in which a shell is needed ? Is there a way to
force Ruby to use a subshell instead of doing everything by itself ?

-- 
Xavier NOELLE