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What's RVM

RVM is the acronym of Ruby enVironment Manager. It manages Ruby application environments and enables switching between them.

Homepage and more info: https://rvm.io/

Installing RVM

Ubuntu

RVM have dedicated Ubuntu package, so please follow instructions posted here: https://github.com/rvm/ubuntu_rvm

If you need a different (newer) version of RVM, after installing base version of RVM check the Upgrading section below.

Any other operating system

Make sure you have following required packages installed:

curl

And then run:

\curl -sSL https://get.rvm.io | bash -s stable

Additional installation options

Additional installation options and details about the installation process are described here: https://rvm.io/rvm/install

Upgrading RVM

You can upgrade RVM any time by running:

rvm get VERSION

Where VERSION should be replaced by one of the following values:

stable - latest stable RVM (good for servers)
master - latest RVM (might not be stable)
branch /path/branch - branched version of RVM (for testing new features or bug fixes)

Additional upgrading options are described here: https://rvm.io/rvm/upgrading

Basic RVM usage

Basic RVM usage scenarios include installing and switching between different ruby versions.

Installing ruby

To install ruby you have to call rvm install INTERPRETER[-VERSION] OPTIONS

When no version specified, RVM will install latest stable version or selected interpreter. If you omit to specify interpreter, RVM will assume
that you wanted to install MRI ruby. Following examples would have exactly the same effect:

rvm install ruby-2.3.1
rvm install ruby-2.3
rvm install 2.3.1
rvm install 2.3

Passing additional --default option makes selected ruby your default.

We currently supported following ruby interpreters:

ruby - MRI ruby (The Gold Standard)
ironruby - a .NET ruby
jruby - Java implementation of the ruby
macruby - implementation of ruby 1.9 directly on top of macOS core technologies
maglev - 64-bit implementation on top of VMware's GemStone
mruby - lightweight ruby
opal - ruby to JavaScript compiler
rbx - Rubinius - a next generation virtual machine VM for ruby
topaz - high performance ruby, written in RPython

Historical interpreters which you can still install with RVM, but are not anymore developed and supported by their authors:

ree - Ruby Enterprise Edition - MRI Ruby with several custom patches for performance, stability, and memory

Switching between ruby versions

To switch between ruby versions you should call

rvm use INTERPRETER[-VERSION]

Same rules and options apply as for install command with two special interpreters.

default - default ruby (or the system ruby if a default hasn't been set)
system - system ruby (state before RVM was installed)

Additionally you might want list your preferred ruby version in .ruby-version file stored in your project folder. This would cause automatic switch to selected ruby whenever you enter the folder.

Other RVM commands

RVM comes bundled with many different tools for managing your ruby environment. More detailed information about every commands listed below can be read after executing rvm help COMMAND or browsing documentation on RVM homepage https://rvm.io/.

Installation

implode - removes the rvm installation completely. This means everything in $rvm_path (~/.rvm || /usr/local/rvm). This does not touch your profiles. However, this means that you must manually clean up your profiles and remove the lines which source RVM
install - install one or many ruby versions
list - show currently installed rubies, interactive output - https://rvm.io/rubies/list/
mount - install rubies from external locations
patchset - tools related to managing ruby patchsets
pkg - install a dependency package {readline,iconv,zlib,openssl} - https://rvm.io/packages/
reinstall - reinstall ruby and runs gem pristine on all gems. Make sure to read output. Use all for all rubies
reload - reload rvm source itself (useful after changing rvm source).
remove - uninstall one or many ruby versions and remove their sources
requirements - installs additional OS specific dependencies/requirements for building various rubies (by default run by install)
reset - remove current and stored default & system settings
snapshot - lets you backup / restore an rvm installation in a lightweight manner
uninstall - uninstall one or many ruby versions, keeping their sources
upgrade - lets you upgrade from one version of a ruby to another, including migrating your gemsets semi-automatically

Running different ruby versions

do - runs an arbitrary command against specified and/or all rubies
use - setup current shell to use a specific ruby version

Managing gemsets

gemset - manage gemsets
migrate - lets you migrate all gemsets from one ruby to another

Configuration

alias - define aliases for rvm use
autolibs - control settings for installing dependencies automatically
current - print the current ruby version and the name of any gemset being used
gemdir - display the path to the current gem directory (GEM_HOME)
group - tools for managing groups in multiuser installations
rvmrc - tools related to managing .rvmrc trust and loading
wrapper - generates a set of wrapper executables for a given ruby with the specified ruby and gemset combination. Used under the hood for passenger support and the like

Maintenance

cleanup - remove stale source folders / archives and other miscellaneous data associated with rvm
cron - manage setup for using ruby in cron
disk-usage - display disk space occupied by RVM
docs - tools to make installing ri and rdoc documentation easier
fetch - download binary or sources for selected ruby version
get - upgrades RVM to latest head, stable or branched version
osx-ssl-certs - helps update certificates for OpenSSL installed by rvm on OSX

Troubleshooting

config-get - display values for RbConfig::CONFIG variables
debug - show additional information helping to discover common issues
export - temporarily set an environment variable in the current shell
fix-permissions - repairs broken permissions
repair - lets you repair parts of your environment e.g. wrappers, env files and similar (e.g. general maintenance)
rubygems - switches the installed version of rubygems for the current ruby
tools - provides general information about the ruby environment, primarily useful when scripting rvm
unexport - undo changes made to the environment by rvm export
user - tools for managing RVM mixed mode in multiuser installations

Information and documentation

info - show the environment information for current ruby
notes - display notes with operating system specifics
usage - list available commands and their usage info (content of this README)
version - display rvm version (equal to rvm -v)

Additional global options

--debug - toggle debug mode on for very verbose output
--trace - toggle trace mode on to see EVERYTHING rvm is doing
--nice - process niceness (increase the value on slow computers, default 0)
-v | --version - display rvm version loaded for current shell

Reporting issues

Here at RVM we get a high amount of bug reports, and often they are connected
with specific environment settings which might be hard for us to replicate.
That's why we would kindly ask you to follow the steps below so we can maximize
our time helping you and minimize the time requesting more information.

Check documentation

We know, you hear this over and over and be rest assured we are working hard to improve the
usability of https://rvm.io but we must always ask that you first please check the documentation
if you are requesting a feature or if you are not sure if you did it right.

Try again with latest RVM

We try to release a new RVM as soon as we feel that we achieved certain stability. This might take
a while and it could be the case that your issue has been already resolved in our development branch.
Please get the latest RVM and try again:

rvm get master

File an issue

If the documentation is not clear, an error message is not clear or you are stuck with the problem,
please do file a bug.

When in doubt as to whether your issue might relate to another, simply file a new bug, and
we will mark it as duplicate if it needs to be. It's always better to file a new ticket and
let us sort it out than to accidentally add noise to another ticket.

For filing issues, we have prepared a template for you to use. Please try to fill all sections as best as you can.
Always make sure to split up each command and its output into its own fenced code block.
If the output is long, please put it in a separate gist.
Otherwise it's hard for us to process all the information and respond quickly.

Note that if there is a lot of debug or trace output you can redirect it to a file with the >
character like rvm [command] > output.txt.

Contributing

You are very warmly welcome to help. Please follow our contribution guidelines

Any and all contributions offered in any form, past present or future are understood to be in complete agreement and acceptance with the Apache License v2.0.

License

Licensed under the Apache License, Version 2.0

Action documentation available with 'rvm help action-name':

  alias autolibs cleanup config-get cron current debug disk-usage do docs fetch fix-permissions gemdir gemset gemset/copy get group implode info install list migrate mount notes osx-ssl-certs patchset pkg prepare reinstall remove repair requirements reset rubygems rvmrc rvmrc/to rvmrc/warning snapshot srcdir tools uninstall upgrade use user wrapper

Other topics of documentation available with 'rvm help topic':

  alt color upgrade-notes

For additional information please visit RVM's documentation website: https://rvm.io/

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