Forum: Ruby Pass variables to arbitrary ruby script: ruby script.rb

Does anyone know if there is a way to pass variables to a arbitrarily
run script?  I tried this with no luck.

ruby script.rb VARIABLE=value

Thanks!

Mario Gr <mflores3@gmail.com> wrote:

> Does anyone know if there is a way to pass variables to a arbitrarily
> run script?  I tried this with no luck.
> 
> ruby script.rb VARIABLE=value

man ruby

In particular, look at the documentation of the -s switch...

m.

On 03.07.2009 20:07, Mario Gr wrote:
> Does anyone know if there is a way to pass variables to a arbitrarily
> run script?  I tried this with no luck.
> 
> ruby script.rb VARIABLE=value

What variables exactly?  Do you want to set shell variables?  Du you
want to propagate variables from one Ruby script to another?

Kind regards

  robert

Mario Gr wrote:
> Does anyone know if there is a way to pass variables to a arbitrarily
> run script?  I tried this with no luck.
> 
> ruby script.rb VARIABLE=value

Option 1: parse ARGV directly. I think this is what rake does.

For example, to build a hash:

vars={}
ARGV.each do |str|
  vars[$1]=$2 if str =~ /\A(.*?)=(.*)\z/
end
puts vars['VARIABLE']

Or you could use eval to set local variables if that's what you really 
want (but I would strongly recommend against this)

Option 2: pass variables in the environment.

env VARIABLE=value ruby script.rb

#!/usr/bin/ruby
puts "You passed ", ENV['VARIABLE']

HTH,

Brian.

Thanks for all the help guys!