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

2022-05-05 05:05 Shooting Stars imported from Stackoverflow

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:

/Users/user/.rbenv/shims/ruby

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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    Team --

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  # some code with logic
end

    In my specific use case, I am checking to see if a custom networking device was specified as a JSON parameter, and if it was, I am validating it make sure its real (incase they misspelled it) and also gathering its IP and state and other data as reported by Ohai

    This is what I have so far, but I'm not sure if this is correct

      describe file('/path/to/custom_attributes.json') do
    it { should exist }
    unless json('/path/to/custom_attributes.json').empty? do
      its(['networking']['interface_name']) { should_not be_empty }
      interface_name = file(json('/path/to/custom_attributes.json').params['networking']['interface_name'])
    end
  end

  describe file('/etc/NetworkManager/system-connections/wired_connection') do
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    its('content') { should match(/id=\.corp.*type=ethernet.*autoconnect-priority=100.*dns-search=corp\.domain.com.*/mx) }
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end

    The problem / question is that if I gather the parameter directly from the JSON file, then I am bypassing all the validation logic that I'm doing in the library, which defeats the purpose. So, how do I get access to that library function/method in the Inspec test?

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  interface
rescue JSON::ParserError
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end
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end

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    2. Should I be using an aggregated fact or a "standard" one?
    3. How do I retain the structure of the hash and then call it with a single query (e.g facts test).
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    [root@blah ~]# facter test
{
  /dev/sda1 => {
    disk_mapping => "",
    is_lvm_partitioned => "false",
    volumeid => "vol1234"
  },
  /dev/xvdb => {
    disk_mapping => "xvdb1",
    is_lvm_partitioned => "true",
    volumeid => "vol5678"
  }
}

    Thanks.

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