Contents

module Jetel
  module Helper
    class << self
      # Cross-platform way of finding an executable in the $PATH.
      #
      #   which('ruby') #=> /usr/bin/ruby
      def which(cmd)
        exts = ENV['PATHEXT'] ? ENV['PATHEXT'].split(';') : ['']
        ENV['PATH'].split(File::PATH_SEPARATOR).each do |path|
          exts.each { |ext|
            exe = File.join(path, "#{cmd}#{ext}")
            return exe if File.executable?(exe) && !File.directory?(exe)
          }
        end
        return nil
      end
    end
  end
end

Version data entries

3 entries across 3 versions & 1 rubygems

Version	Path
jetel-0.0.15	lib/jetel/helpers/os_helper.rb
jetel-0.0.14	lib/jetel/helpers/os_helper.rb
jetel-0.0.12	lib/jetel/helpers/os_helper.rb