rbenv

• Manages multiple ruby versions

brew install rbenv

install

# list all available versions to be installed
rbenv install --list

# Install a specific version
rbenv install 3.2.2

global

• Use a specific version globally

# show the current global ruby version
rbenv global

# set a global ruby version
rbenv global 3.2.2

init

• Add $HOME/.rbenv/bin to your path
• Eval rbenv at the shell startup

fish_add_path -g $HOME/.rbenv/bin
eval "$(rbenv init -)"