RVM: Ruby Version Manager - The do set operation

∞Usage

∴ rvm [all|all-gemsets|<ruby>,...|<path>] [--verbose|--summary|--yaml|--json] do <command> ...
∴ rvm in <path> do <some-command> ...
∴ rvm-exec [all|all-gemsets|<ruby>,...|<path>] [--verbose|--summary|--yaml|--json] <command> ...

Executes arbitrary commands against given a set of rvm environments. Without additional flags it will exec the command directly without printing out extra rvm information.

∞Selectors:

all - execute command in the default gemset of all rubies
all-gemsets - execute command in the all gemset for all rubies
<ruby>,... - list of rubies to use, allows short versions or gemsets
<path> - use ruby from the given path/project

∞Modifiers:

in - works with path and will additionally cd to the given directory
--verbose - display one line details about ruby/gemset
--summary - hide output and display summary of failures/success list only
--yaml - hide output and display yaml summary of failures/success list only
--json - hide output and display json summary of failures/success list only

∞Caveats

If using the set do operation when scripting, use rvm-exec (usually installed to ~/.rvm/bin/rvm-exec). Using ~/.rvm/bin/rvm instead will cause RVM to spawn a bash shell, which is undesireable in the context of process monitoring.

∞Examples:

To execute ruby -v against all installed rubies and aliases, you would run:

∴ rvm all do ruby -v

If you want to execute it against a specific ruby (without extra logging / data printed by rvm as is done with normal set operations), you can instead do:

∴ rvm ree do ruby -v

Since it is a set operation, normal ruby specifiers will work. As an example, to run gem list against 2.0.0 and 2.1.1 and prefix with ruby name, you would run:

∴ rvm 2.1.1,2.0.0 --verbose do gem list

Or, to execute gem env against all gemsets:

∴ rvm all-gemsets do gem env

To execute which ruby in the current directory, loading a .rvmrc:

∴ rvm . do which ruby

To execute rake test in the project directory, loading a .rvmrc:

∴ rvm in /path/to/project do rake test

For more information, refer to the rvm set operations.