2017-10-11 01:01:01 +00:00
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---
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title: rbenv
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category: Ruby
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2020-07-04 13:33:09 +00:00
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updated: 2018-02-20
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2017-10-11 01:03:14 +00:00
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weight: -1
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2017-10-11 01:01:01 +00:00
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description: |
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A one-page guide to rbenv Ruby version manager, with usage examples and more.
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intro: |
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[rbenv](https://github.com/rbenv/rbenv) lets you manage installations of multiple Ruby versions.
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---
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### Installation
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#### Install rbenv and ruby-build
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```bash
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git clone https://github.com/sstephenson/rbenv.git ~/.rbenv
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git clone https://github.com/sstephenson/ruby-build.git ~/.rbenv/plugins/ruby-build
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```
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2017-10-11 01:02:23 +00:00
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#### Add to ~/.bash_profile
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2017-10-11 01:01:01 +00:00
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```bash
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echo 'export PATH="$HOME/.rbenv/bin:$PATH"' >> ~/.bash_profile
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echo 'eval "$(rbenv init -)"' >> ~/.bash_profile
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```
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#### Verify installation
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```bash
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type rbenv # → "rbenv is a function"
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```
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These are generic instructions; there may be rbenv packages available for your OS.
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See: [Installation](https://github.com/rbenv/rbenv#installation)
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### Managing versions
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| Command | Description |
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| --- | --- |
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| `rbenv install -l` | List all available versions |
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| --- | --- |
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| `rbenv install 2.2.1` | Install Ruby _2.2.1_ |
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| `rbenv uninstall 2.2.1` | Uninstall Ruby _2.2.1_ |
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| --- | --- |
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| `rbenv versions` | See installed versions |
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| `rbenv version` | See current version |
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| --- | --- |
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| `rbenv which <NAME>` | Display path to executable |
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| `rbenv rehash` | Re-write binstubs |
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## Using versions
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{: .-three-column}
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### Locally
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2018-02-20 15:53:18 +00:00
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| Command | Description |
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| --- | --- |
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2017-10-11 01:01:01 +00:00
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| `rbenv local 2.2.2` | Use Ruby _2.2.2_ in project |
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| `rbenv local --unset` | Undo above |
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Application-specific version numbers are stored in `.ruby-version`.
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### Globally
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2018-02-20 15:53:18 +00:00
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| Command | Description |
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| --- | --- |
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2017-10-11 01:01:01 +00:00
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| `rbenv global 2.2.2` | Use Ruby _2.2.2_ globally |
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2018-02-20 15:53:18 +00:00
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| `rbenv global --unset` | Undo above |
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2017-10-11 01:01:01 +00:00
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Global version numbers are stored in `~/.rbenv/version`.
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### Shell
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2018-02-20 15:53:18 +00:00
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| Command | Description |
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| --- | --- |
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2017-10-11 01:01:01 +00:00
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| `rbenv shell 2.2.2` | Use Ruby _2.2.2_ in shell |
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| `rbenv shell --unset` | Undo above |
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Shell-local version numbers are stored as environment variables.
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## References
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- [rbenv project page](https://github.com/rbenv/rbenv) _(github.com)_
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- [rbenv ubuntu server cheatsheet](https://gist.github.com/rahul286/7160839f4425a3b7e718) _(gist.github.com)_
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