From: Collins Richey <crichey@...>
Date: 2008-03-10T01:03:22+09:00
Subject: Re: Slide Show v0.1 - A Free Web Alternative to PowerPoint and KeyNote in Ruby Now Live

On Sat, Mar 8, 2008 at 10:19 PM, Gerald Bauer <geraldbauer2007@gmail.com> wrote:
> Hello,
>
>
>  >  ok, gen env points me to
>  >
>  >  /usr/lib/ruby/gems/1.8/gems/slideshow-0.2/bin/slideshow
>  >
>  >  Slideshow has a normal Linux shebang setup, ie
>  >
>  >  #!/usr/bin/env ruby
>  >  require 'rubygems'
>  >  require 'slideshow'
>  >  Slideshow.main
>  >
>  >  If I mark the file executable and run it from the directory containing
>  >  the sample, it doesn't work.
>  >
>  >  Something about the gem setup must be wrong.
>
>    You're looking at the Ruby script not the shell script/exectuable
>  generated by RubyGems. The shell script/exectuable generated by
>  RubyGems looks something like:
>
>  #!c:/prg/ruby/v186/bin/ruby.exe
>  #
>  # This file was generated by RubyGems.
>  #
>  # The application 'slideshow' is installed as part of a gem, and
>  # this file is here to facilitate running it.
>  #
>
>  require 'rubygems'
>
>  version = ">= 0"
>
>  if ARGV.first =~ /^_(.*)_$/ and Gem::Version.correct? $1 then
>   version = $1
>   ARGV.shift
>  end
>
>  gem 'slideshow', version
>  load 'slideshow'
>
>
>    As mention before the shell script should get placed into your Ruby
>  interpreter's binary folder (not the gem folder) and you have to
>  include the Ruby interpreter's binary folder into your execution path
>  to make it work.
>
>
>

Note, your examples are for Windows, and not directly relavent for Linux.


1. The standard executable path on (most) Linux systems is '/usr/bin',
and this is where ruby and irb reside.

2. 'gem query --local' shows the following

*** LOCAL GEMS ***

RedCloth (3.0.4)
slideshow (0.2)

3. As expected, /usr/bin/redcloth exists, and it looks like the sample
you quoted.

4. There is no /usr/bin/slideshow

Either your gem is defective or gem itself is defective.

I'll try building the executable manually and see if it works.

-- 
Collins Richey
     If you fill your heart with regrets of yesterday and the worries
     of tomorrow, you have no today to be thankful for.