/usr/lib/ruby/1.8/tkextlib/version.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 | #
# release date of tkextlib
#
module Tk
Tkextlib_RELEASE_DATE = '2008-05-23'.freeze
end
|