Uncommon homebrew error: "Unknown command: switch"

Question

I am in the process of trying to restart some legacy project that demands the use of an older version of openssl.

I have found good input on the issue here, which worked on one of my machines but not the other, which gives me the following error:

$  brew switch openssl 1.0.2t
Error: Unknown command: switch

The error does not seem to be very common, nothing helpful is showing up on a google/stackoverflow search.

What I have tried so far:

• resolved all warnings shown by brew doctor
• run brew update && brew upgrade
• updated Xcode Command Line Tools
• reinstalled openssl

What can I do to fix this?

Answer 1

As I commented above, Homebrew got rid of the switch command entirely, which is why it says "Unknown command".

But rbenv provides a tap that you can install openssl from. You can run the command below:

brew install rbenv/tap/[email protected]

If you're installing [email protected] for Ruby purposes, this thread tells you how to do that as well. For example:

CONFIGURE_OPTS="--with-openssl-dir=$(brew --prefix [email protected])" RUBY_CONFIGURE_OPTS="--with-openssl-dir=$(brew --prefix [email protected])" rbenv install 2.7.2