From: John Carter <john.carter@...>
Date: 2008-08-13T06:10:28+09:00
Subject: Re: Sigh! I'm depressed. Debian vs Ruby and the backtick and 	subshells

On Tue, 12 Aug 2008, ara.t.howard wrote:

> i could easily be wrong, but i have a dim recollection that the location of 
> sh is a POSIX standard itself.
>
> backticks seem to respect the SHELL var here
>
> cfp:~ > SHELL=tcsh ruby -e' puts `echo $SHELL 2>out` '
> tcsh

At risk of being a little rude to one who doesn't deserve it, I
couldn't resist (purely for humorous reasons) framing my illustration
of the problem with that line like so....

  I_AM_EASILY_WRONG='yes you are :-)' ruby -e' puts `echo $I_AM_EASILY_WRONG 2>out`'
yes you are :-)


The location at /bin/sh is standard and fixed. SHELL is what you set
that users default shell to in your /etc/password.

In unix Ruby backtick ignores ENV["SHELL"] and just runs whatever is at /bin/sh


John Carter                             Phone : (64)(3) 358 6639
Tait Electronics                        Fax   : (64)(3) 359 4632
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