Option Parsing in rb

gistfile1.rb

#!/usr/bin/env ruby

require 'optparse'
require 'ostruct'

# OPTIONS PARSING
options = OpenStruct.new
parser = OptionParser.new do |opts|
  opts.banner = "Usage: #{File.basename(__FILE__)} [options] [files]"

  opts.on('-v', '--verbose', 'Verbose') do
    # TODO: add some verbosity
    options.verbose = true
  end

  opts.on('-f', '--file="file"', "The file to use") do |file|
    options.filename = filename
  end

  opts.on('-h', '--help', 'Show this message') do
    puts opts
    exit
  end
end
parser.parse!(ARGV)

# Anything unparsed remains in ARGV
# in the above example files = ARGV after parsing