---
syntax: markdown
tags: [tldr, common]
source: https://github.com/tldr-pages/tldr.git
---
# ri

> Browse structured API documentation for Ruby.
> See also: `ruby`.
> More information: <https://ruby.github.io/rdoc/RI_md.html>.

- Start interactive shell:

`ri`

- View documentation for a particular name:

`ri {{File#read}}`

- List classes and modules for which `ri` has documentation:

`ri {{[-l|--list]}}`