From: stephen.hill@... (Steve Hill)
Date: 2001-10-16T23:45:45+09:00
Subject: [ruby-talk:22615] Help (going stupid) ...`pwd` behaviour in ruby?

Hi there,
I seem to be going a bit stupid this Tuesday afternoon....can anyone
help out here.
obed% pwd
/home/stehill1/DL_baseline/OFF/1.0/200-500

this is a link into a filesystem, so

obed% irb
irb(main):01:0> `pwd`
"/tmp_mnt/.autofa/research_rrm/rac/DL_baseline/OFF/1.0/200-500\n"


OK, so I think I get the jist of the problem, which is that when ruby
runs the backquoted process (`pwd`), it uses the default shell, which
according to the pickaxe book (p141) is found in RUBYSHELL, or failing
that in SHELL or COMSPEC. So trying that

obed% echo $SHELL
/bin/sh

...ok so lets change this to bash (the shell I am using outside ruby)

obed% SHELL=/bin/bash
obed% RUBYSHELL=/bin/bash
obed% export SHELL RUBYSHELL

so now lets see what happens...

irb> ENV["SHELL"]
/bin/bash
irb> ENV{"RUBYSHELL"]
/bin/bash
irb> `pwd`
"/tmp_mnt/.autofa/research_rrm/rac/DL_baseline/OFF/1.0/200-500\n"

....starts banging head against wall.

I've been working on this for about 3 hours now. It's breaking a whole
bunch of scripts (I've just moved a whole lot of data around), and
even talking to the teddies in the next cube hasn't helped.

Please, somebody put me out of my misery....

Thanks in advance
Steve
(feeling very stupid on a Tuesday afternoon)