/usr/lib/ruby/1.8/tk/console.rb is in libtcltk-ruby1.8 1.8.7.352-2ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52  | #
#   tk/console.rb : control the console on system without a real console
#
require 'tk'
module TkConsole
  include Tk
  extend Tk
  TkCommandNames = ['console'.freeze, 'consoleinterp'.freeze].freeze
  def self.create
    TkCore::INTERP._create_console
  end
  self.create  # initialize console
  def self.title(str=None)
    tk_call 'console', str
  end
  def self.hide
    tk_call_without_enc('console', 'hide')
  end
  def self.show
    tk_call_without_enc('console', 'show')
  end
  def self.eval(tcl_script)
    #
    # supports a Tcl script only
    # I have no idea to support a Ruby script seamlessly.
    #
    _fromUTF8(tk_call_without_enc('console', 'eval', 
                                  _get_eval_enc_str(tcl_script)))
  end
  def self.maininterp_eval(tcl_script)
    #
    # supports a Tcl script only
    # I have no idea to support a Ruby script seamlessly.
    #
    _fromUTF8(tk_call_without_enc('consoleinterp', 'eval', 
                                  _get_eval_enc_str(tcl_script)))
  end
  def self.maininterp_record(tcl_script)
    #
    # supports a Tcl script only
    # I have no idea to support a Ruby script seamlessly.
    #
    _fromUTF8(tk_call_without_enc('consoleinterp', 'record', 
                                  _get_eval_enc_str(tcl_script)))
  end
end
 |