ruby -v says no such file or directory in mac os

I had the original ruby v2.6.8 I believe on my mac os. I wanted to upgrade to ruby 3.1.2 to get access to rails.

I installed ruby via homebrew, however I decided it woud be easier to manage using rbenv. I went to uninstall ruby via homebrew, and then instaled ruby 3.1.2 with rbenv.

Now when I use the

ruby -v 
-bash: /usr/local/opt/ruby/bin/ruby: No such file or directory

using the command which ruby brings me this:


So the ruby is there, and rbenv claims it installed ruby 3.1.2, but did homebrew install all of ruby including the version osx came with? Im pretty sure thats a yikes moment if it did. I also can't use any ruby commands under these circumstances so I don't really know what to do from here?

How do I get my $PATH to recognize the rbenv path to ruby as the global path? I'm on MacOs 11.3.1 BigSur if thats relevant.

1 answer

  • answered 2022-05-05 05:20 Christos-Angelos Vasilopoulos

    Follow the next steps to set up rbenv, and ruby 3.1.2.

    Step 1

    brew install rbenv

    Step 2 Add the following lines to your .zshrc file

    export PATH="$HOME/.rbenv/bin:$PATH"
    eval "$(rbenv init - zsh)"

    Step 3

    brew update && brew upgrade ruby-build

    Step 4

    rbenv install 3.1.2
    rbenv global 3.1.2

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