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tldr/pages/common/rbenv.md

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# rbenv
> A tool to easily install Ruby versions and manage application environments.
> More information: <https://github.com/rbenv/rbenv>.
- Install one or more space-separated versions of Ruby:
`rbenv install {{version(s)}}`
- Display a list of installed versions:
`rbenv versions`
- Use a specific version of Ruby across the whole system:
`rbenv global {{version}}`
- Use a specific version of Ruby for an application/project directory:
`rbenv local {{version}}`
- Show the currently selected Ruby version:
`rbenv version`
- Uninstall a version of Ruby:
`rbenv uninstall {{version}}`
- Display all ruby versions that contain the specified executable:
`rbenv whence {{executable}}`