私はルビー初心者です。この pomo util を使用したいと思います: https://github.com/visionmedia/pomo#readme。
しかし、ubuntu 12.10 端末で pomo を実行すると:
/var/lib/gems/1.9.1/gems/commander-4.1.3/lib/commander/runner.rb:365:in
`block in require_program':
program version required (Commander::Runner::CommandError)
from /var/lib/gems/1.9.1/gems/commander-4.1.3/lib/commander/runner.rb:364:in `each'
from /var/lib/gems/1.9.1/gems/commander-4.1.3/lib/commander/runner.rb:364:in `require_program'
from /var/lib/gems/1.9.1/gems/commander-4.1.3/lib/commander/runner.rb:52:in `run!'
from /var/lib/gems/1.9.1/gems/commander-4.1.3/lib/commander/delegates.rb:11:in `run!'
from /var/lib/gems/1.9.1/gems/commander-4.1.3/lib/commander/import.rb:10:in `block in <top (required)>'
/usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require':
cannot load such file -- libnotify (LoadError)
from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
from /var/lib/gems/1.9.1/gems/pomo-2.0.2/lib/pomo.rb:5:in `<top (required)>'
from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
from /var/lib/gems/1.9.1/gems/pomo-2.0.2/bin/pomo:7:in `<top (required)>'
from /usr/local/bin/pomo:23:in `load'
from /usr/local/bin/pomo:23:in `<main>'
どうすればいいですか。ありがとうございます。