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April 21, 2014 22:21
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RVM Cheat Sheet
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RVM home page: https://rvm.io | |
Install RVM | |
------------ | |
See https://rvm.io/rvm/install/ | |
curl -L get.rvm.io | bash -s stable | |
On OS X you can use RailsInstaller which will bring all dependencies for you: | |
installer: https://github.com/railsinstaller/railsinstaller-nix/downloads | |
background: http://www.engineyard.com/blog/2012/railsinstaller-for-os-x/ | |
Update RVM | |
---------- | |
rvm get stable | |
In case of problems try first with development version | |
(maybe it's already fixed): | |
rvm get head | |
Very old installations might not support those update methods, | |
just run the installer and reopen your terminal. | |
Install Ruby dependencies | |
------------------------- | |
Follow instructions from: | |
rvm requirements | |
List known rubies | |
----------------- | |
rvm list known | |
Install Ruby | |
------------ | |
rvm install 1.9.3 # Latest known patch level | |
rvm install 1.9.3 -j 3 # Parallel compile, set to # of CPU cores | |
rvm install 1.9.3 --patch falcon # Use a patch (falcon for performance) | |
rvm install 1.9.2-p318 # Patchlevel 318 | |
rvm install rbx --1.9 # Rubinius with 1.9 mode set as default | |
List all rubies and gemsets | |
--------------------------- | |
rvm list # List rubies only | |
rvm list gemsets # List rubies and gemsets | |
rvm gemset list # List gemsets for current ruby | |
Selecting Ruby for work | |
----------------------- | |
rvm system # For system ruby, with fallback to default | |
rvm use jruby # For current session only | |
rvm use --default 1.9.3 # For current and new sessions | |
rvm use --ruby-version rbx # For current session and this project | |
RVM will automatically use a ruby and gemset when you `cd` to a project directory. | |
Read more on project files: | |
- https://rvm.io/workflow/projects/#ruby-versions | |
Using ruby and gems | |
------------------- | |
After selecting Ruby work as usual: | |
ruby -v | |
gem install haml | |
haml | |
Temporarily selecting another Ruby or gemset | |
-------------------------------------------- | |
rvm 1.8.7 do gem install rspec # in the given ruby | |
rvm 1.8.7,1.9.2 do gem install haml # in this two rubies | |
rvm @global do gem install gist # in @global gemset of current ruby | |
Gemsets | |
------- | |
RVM by default allows creating multiple environments for one ruby - called *gemsets*. | |
Gemsets can be specified together with ruby name using gemsets separator(@): | |
- ruby-1.9.3-p125@my-project | |
During installation of Ruby, RVM creates two gemsets: | |
- default - automatically selected when no @gemset specified: rvm use 1.9.3 | |
- global - super gemset, inherited by all other gemsets for the given ruby | |
Working with gemsets: | |
rvm use 1.8.7 # use the ruby to manage gemsets for | |
rvm gemset create project_name # create a gemset | |
rvm gemset use project_name # use a gemset in this ruby | |
rvm gemset list # list gemsets in this ruby | |
rvm gemset delete project_name # delete a gemset | |
rvm 1.9.1@other_project_name # use another ruby and gemset | |
rvm 1.9.3@_project --create --rvmrc # use and create gemset & .rvmrc | |
Install RVM for all users | |
-------------------------- | |
Discouraged; make sure to read http://rvm.io/rvm/installation/ | |
More help ? | |
----------- | |
A lot of resources is available: | |
- in your terminal: `rvm help` | |
- https://rvm.io/ | |
- IRC #rvm @ freenode - http://webchat.freenode.net/?channels=#rvm | |
---------------- | |
From: http://cheat.errtheblog.com/s/rvm |
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