При подключении модуля \"tk\" не находит tcltklib.

[<a href="mailto:rider@riderbook" target="_new">rider@riderbook</a> ruby]$ ./tk.rb 
/usr/lib/ruby/1.6/tk.rb:7:in `require\': No such file to load -- tcltklib (LoadError)
        from /usr/lib/ruby/1.6/tk.rb:7
        from ./tk.rb:3:in `require\'
        from ./tk.rb:3
[<a href="mailto:rider@riderbook" target="_new">rider@riderbook</a> ruby]$ cat tk.rb
#!/usr/bin/env ruby
require \&quot;socket\&quot;
require \&quot;tk\&quot;

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