ruby.rb

#!/usr/bin/env ruby
# encoding: UTF-8

require 'optparse'

global_options = {}
download_options = {}

global = OptionParser.new do |opts|
  opts.banner = "Usage: taf [options]"

  opts.on("-v", "--[no-]verbose", "Run verbosely") do |v|
    global_options[:verbose] = v
  end
end

subcommands = {
  'download' => OptionParser.new do |opts|
    opts.banner = "Usage: taf download [options]"

    opts.on("-f", "--force", "Force folder replacement") do |f|
      download_options[:forced] = f
    end
  end
}

p ARGV
global.order!
p ARGV
subcommands[ARGV.shift].order!

p 'Global', global_options
p 'Download', download_options
p ARGV

## Results from running it like: ./script.rb -v --verbose download --force argument
## ["-v", "--verbose", "download", "--force", "argument"]
## ["download", "--force", "argument"]
## "Global"
## {:verbose=>true}
## "Download"
## {:forced=>true}
## ["argument"]