http://futurismo.biz/archives/2226$ sudo apt-get remove tk-dev $ sudo apt-get install tk8.4-dev tcl8.4-dev$ sudo ln -sfn /usr/lib/tcl8.4/tclConfig.sh /usr/lib/tclConfig.sh $ sudo ln -sfn /usr/lib/tk8.4/tkConfig.sh /usr/lib/tkConfig.sh$ rvm…

require 'tk'TkRoot.new {geometry '300x200+100+100'} TkAfter.new(3000, # milliseconds 1, proc{exit} # what to call when the timer expires ).startTk.mainloop

http://stackoverflow.com/questions/20874900/ruby-require-tk-yields-loaderror-no-such-file-to-load-tk http://5zalt.hatenablog.com/entry/2015/02/12/124228 $ sudo apt-get install tk-dev $ rvm reinstall ruby-2.2-head --with-tcltkversion=8.6 --…