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ry: the simplest ruby virtual env


Install the files

git clone git://
cd ry
PREFIX=$HOME/.local make install

and add the following lines to your bashrc:

# If you're using the default ~/.local prefix,
# make sure ~/.local/bin is on your $PATH.
export PATH="$HOME/.local/bin:$PATH"
eval "$(ry setup)"

or, if you don't like eval, you can do it manually:

export RY_PREFIX="$HOME/.local"
export PATH="$RY_PREFIX/lib/ry/current/bin:$PATH"
. "$RY_PREFIX/lib/ry.bash_completion"


Ry is a bit different from other version managers. The major design goal of ry is to be explicit, unobtrusive, and easy to query. In the vein of the n package manager for node, there are no subshells, and the only thing it needs to add to your environment is a single entry to your $PATH (also tab completion if you like). For example, here's how you create a new installation:

ry install mri-1.9.3

This creates an installation of Ruby called mri-1.9.3 using the tarball from To switch to this ruby, use

ry use mri-1.9.3 # or: ry mri-1.9.3

Want to use a custom commit?

ry install<hash> mri-custom


If you have ruby-build installed, you can use it very easily with ry:

ry install 1.9.3-p125

For more information, see ry help.

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