execute (Debugger)

    # File cli/ruby-debug/commands/show.rb, line 200
        def execute
          if not @match[1]
            print "\"show\" must be followed by the name of an show command:\n"
            print "List of show subcommands:\n\n"
            for subcmd in Subcommands do
              print "show #{subcmd.name} -- #{subcmd.short_help}\n"
            end
          else
            args = @match[1].split(/[ \t]+/)
            param = args.shift
            subcmd = find(Subcommands, param)
            if subcmd
              print "%s\n" % show_setting(subcmd.name)
            else
              print "Unknown show command #{param}\n"
            end
          end
        end