From: "Booker C.Bense" <bbense+comp.lang.ruby.Apr.25.07@...>
Date: 2007-04-26T05:15:18+09:00
Subject: Re: Is it possible to make system use bash instead of sh?

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In article <335e48a90704250904y7c06bcb5s74b34cd86d92860e@mail.gmail.com>,
Robert Dober <robert.dober@gmail.com> wrote:
>On 4/25/07, Wai Tsang <simotsa@gmail.com> wrote:
>
>Of course that is not exactly what you want, you would like to tell
>Kernel or whatever other object that wants to hear that kind of
>message: "You are going to use /bin/bash for system from now on".
>So I went digging the code, no such luck, I just could not find the
>definition of Kernel#system :(
>neither with rb_define_method.*system
>nor with def\s*system
>and even less with
>alias\s*system
>or
>rb_alias.*system
>Hope that somebody more learned will help us out here.
>

_ Ruby uses the underlying C exec call and any system that does
not use /bin/sh is severely broken. It's part of the POSIX
standard. If you want bash, then use the multi-arg form of the
command which bypasses shell interpretation entirely. 

If you want the gory details look in process.c 

rb_f_system 

_ Booker C. Bense  

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