Pass variables to arbitrary ruby script: ruby script.rb

Ruby
1

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!

2

Mario Gr [email protected] 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.

3

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

4

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.

5

Thanks for all the help guys!