From: oinkoink+unet@... (Bret Jolly)
Date: 2004-05-19T08:09:41+09:00
Subject: Re: Newbie installation problem: libraries?

Paul Emmons <pemmons@voicenet.com> wrote in message news:<gtlka05f0js7diommkcujmuioiqa5srtuh@4ax.com>...
> I have recently installed ruby-1.8.1 on my Mandrake Linux system.
> 
> Everything seems to be working except any programs with "require",
> such as irb requiring "irb".
> 
> I hope this is just a matter of ruby not finding its libraries, which
> are actually here somewhere.
> 
> Do you know how I can correct this problem?
> 
> Thanks.
People have already noted how you can find what path is
automatically used by ruby, e.g., by
ruby -e 'puts $LOAD_PATH'

To change this, you can set the shell environment variable RUBYLIB.
For example, in my .bashrc on one of the computers I use, I have the
lines:
RUBYLIB="$HOME/comp_lang/ruby/nucm:$HOME/comp_lang/ruby/pnom"
export RUBYLIB

This allows me to require files in ~/comp_lang/ruby/nucm and
~/comp_lang/ruby/pnom without explicitly giving the directory.
If I run a script in my home directory with the line:
require 'nucm_utils'

This loads the file ~/comp_lang/ruby/nucm/nucm_utils.rb into ruby.

Regards, Bret