rvm

Ruby version manager for multiple installations

TLDR

Install Ruby version

$ rvm install [3.2.0]

List installed versions

$ rvm list

Use specific version

$ rvm use [3.2.0]

Set default version

$ rvm use [3.2.0] --default

Create gemset

$ rvm gemset create [myproject]

Use version with gemset

$ rvm use [3.2.0]@[myproject]

List available versions

$ rvm list known

SYNOPSIS

rvm [options] command [args...]

rvm (Ruby Version Manager) manages multiple Ruby installations and gemsets. It handles Ruby installation, version switching, and isolated gem environments.
The tool modifies shell environment to switch between Ruby versions and provides gemsets for project-specific gem isolation.

PARAMETERS

install version

Install Ruby version.

use version

Switch to version.

list

List installed versions.

list known

List available versions.

gemset create name

Create gemset.

gemset use name

Use gemset.

gemset list

List gemsets.

--default

Set as default.

implode

Remove RVM completely.

CAVEATS

Modifies shell initialization. Can conflict with system Ruby. Gemsets add complexity. Some prefer rbenv's simpler approach.

HISTORY

RVM was created by Wayne E. Seguin in 2009 to simplify Ruby version management. It became the dominant Ruby version manager before rbenv offered a simpler alternative. Now maintained by Michal Papis.

rvm