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Rails for Beginners Part 1: Installing Ruby on Rails Discussion

Hi Chris, i have a question, currently have rvm on my machine, do you think i can get problems if i install also rbenv to install ruby 3.0.0?

I'd say it is generally preferable to have either rvm or rbenv installed on your machine, but not both.
If you want to make the switch to rbenv, you'll find articles or gists on your favorite search engine such as or

Using RVM is just fine! Don't worry about switching to rbenv if you're already on RVM.


I'm coming back to Rails after many years. I had the exact same question! The article that surfaced when I searched was I'll also read the two recommended by Pierre-Loïc. Thank you for those leads. Getting RVM off my system looks like an intimidating undertaking. :-(


Best to stick with the one that is working now. I made the switch and it took awhile to clean out the system. Caused a few headaches.


I ran rbenv install 3.0.3 (followed by rbenv global 3.0.3) and it returned the following:

Downloading openssl-1.1.1l.tar.gz...
Installing openssl-1.1.1l...
Installed openssl-1.1.1l to /Users/isaactait/.rbenv/versions/3.0.3

Downloading ruby-3.0.3.tar.gz...
Installing ruby-3.0.3...
ruby-build: using readline from homebrew
Installed ruby-3.0.3 to /Users/isaactait/.rbenv/versions/3.0.3

However, when I run ruby -v it returns ruby 2.6.8p205 (2021-07-07 revision 67951) [universal.x86_64-darwin21]

Why am I running a version I did not install? On a Mac 12.2.1

I found a comment from a user having the same issue in the "Install Ruby & Rails Guide" above. The following fixed the issue for me:

After setting the global version, I needed to close the terminal, open another, run rbenv rehash.


It is best to continue using what is currently effective. The system needed time to be cleaned after I made the transition. gave me a headache.

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