rbenv

Manage multiple Ruby versions per project

TLDR

List installed versions

$ rbenv versions

List available versions

$ rbenv install -l

Install Ruby version

$ rbenv install [3.2.0]

Set global version

$ rbenv global [3.2.0]

Set local version

$ rbenv local [3.2.0]

Show current version

$ rbenv version

Set shell-specific version

$ rbenv shell [3.2.0]

Rehash shims

$ rbenv rehash

rbenv manages multiple Ruby installations. It allows switching between Ruby versions globally, per-project, or per-shell, without modifying system Ruby.The tool uses shims to intercept Ruby commands and route them to the appropriate version based on context.

PARAMETERS

versions

List installed versions.

version

Show current version.

install version

Install Ruby version.

uninstall version

Remove Ruby version.

global version

Set global default.

local version

Set directory version.

shell version

Set shell version.

rehash

Rebuild shims.

which name

Show executable path.

init

Set up rbenv shims in the current shell.

exec command

Run an executable with the selected Ruby version.

INSTALL

sudo dnf install rbenv

sudo pacman -S rbenv

sudo zypper install rbenv

brew install rbenv

nix profile install nixpkgs#rbenv

CAVEATS

Requires ruby-build plugin for install. Shims need rehashing after gem installs. Per-project version via .ruby-version file.

HISTORY

rbenv was created by Sam Stephenson in 2011 as a simpler alternative to RVM. It focuses on doing one thing well - version switching - without modifying shells or managing gemsets.