The package needed is the ruby1.8-dev …then install
tinix@Creek:/#sudo gem install ruby-debug
Building native extensions. This could take a while…
Building native extensions. This could take a while…
Successfully installed linecache-0.43
Successfully installed ruby-debug-base-0.10.3
Successfully installed ruby-debug-0.10.3
3 gems installed
Installing ri documentation for linecache-0.43…
Installing ri documentation for ruby-debug-base-0.10.3…
Installing ri documentation for ruby-debug-0.10.3…
Installing RDoc documentation for linecache-0.43…
Installing RDoc documentation for ruby-debug-base-0.10.3…
Installing [...]
