F.A.Q.

Rubycon doesn't produce any output at all

Ruby wasn't installed with readline support.

• Uninstall Ruby
• install the readline-devel (RHEL based) or libreadline-dev (Debian based) package.
• Reinstall Ruby

If you still get the error, the OS package version of Ruby doesn't support readline. You can compile Ruby on your own relatively easy with rbenv or RVM.

Why isn't rubycon working with Ruby 2.0?

Ruby uses steam-condenser for interacting with game servers, which itself depends on bzip2-ruby. Unfortunately, the maintainer of bzip2-ruby didn't release an update for Ruby 2.0 yet. Check out #213 for more details.