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No ruby alternatives on 11.04 / 11.10?

I have 2 questions about ruby on ubuntu.

  1. I've already install ruby1.8 and ruby1.9.1 on ubuntu lucid but when I run "update-alternatives --config ruby" on terminal then the output is "update-alternatives: error: no alternatives for ruby." How to fix this?
  2. What's difference and advantages to install ruby on ubuntu by using RVM and update-alternatives? Sorry if my english's language is not good enough. :D Thanks
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  1. Don't know. Do Ruby support alternatives?

  2. It depends on what you want to do.

If you want to develop applications, the RVM might be a good solution,depending on what you want to have. Then latest features might be ok and you can manage API changes in libraries.

If you want to administrate a web site, you do want to use software packed by Ubuntu/Debian, as they are stable and will not change the API "under your feets".

This was a large controversy between Debian packer and Ruby developers. Ruby developers didn't understood the problem for system administrators with fast development and changing API:s.

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