Ruby Information

Use the ri command to access Ruby documentation which is installed locally on your system.

Instructions

Use ri [options] <whatever> to look up information about Ruby classes, modules, and methods.

• Combine with head to fast check documentation before displaying full content.
• Combine with wc to count relevant items when searching for multiple entries.
• Combine with grep to filter results based on keywords.

Consider to add quote to queries with special characters to avoid shell interpretation issues. e.g. ri 'String#blank?'

Scenarios

Direct Lookup

Check specific Ruby classes or methods accurately.