Jayesh Mann

Posted on Aug 10, 2022 • Updated on Aug 17, 2022

Rubocop - Linting QuickStart for Ruby

#ruby #inthirtyseconds

Knowledge Base: Lint, or a linter, is a static code analysis tool used to flag programming errors, bugs, stylistic errors and suspicious constructs.

Make sure you have your ruby environment(check compatibility) working before proceeding.

Installation

Simply run

% gem install rubocop

Create a .rubocop.yml file in your home(% cd ~) directory for all ruby projects. Alternatively, you can create it in your project directory.

In your project's directory,

% rubocop

or you can specify a file or a directory of your choosing.

% rubocop lib/file.rb spec/

If you don't have rubocop on your terminal, try bundle exec rubocop

% rubocop -a

Knowledge Base: Only safe offenses will be fixed with -a

Here is the list of rules with their categories:
https://docs.rubocop.org/rubocop/cops.html