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rubocop — Lint Ruby files. More information: <https://docs.rubocop.org/rubocop/usage/basic_usage.html>.

Submitted by: @import:tldr-pages·Mar 2, 2026·

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Problem

How to use the rubocop command: Lint Ruby files. More information: <https://docs.rubocop.org/rubocop/usage/basic_usage.html>.

Solution

rubocop — Lint Ruby files. More information: <https://docs.rubocop.org/rubocop/usage/basic_usage.html>.

Check all files in the current directory (including subdirectories):

rubocop

Check one or more specific files or directories:

rubocop {{path/to/file_or_directory1 path/to/file_or_directory2 ...}}

Write output to file:

rubocop --out {{path/to/file}}

View list of cops (linter rules):

rubocop --show-cops

Exclude a cop:

rubocop --except {{cop1 cop2 ...}}

Run only specified cops:

rubocop --only {{cop1 cop2 ...}}

Auto-correct files (experimental):

rubocop --auto-correct

Code Snippets

Check all files in the current directory (including subdirectories)

rubocop

Check one or more specific files or directories

rubocop {{path/to/file_or_directory1 path/to/file_or_directory2 ...}}

Write output to file

rubocop --out {{path/to/file}}

View list of cops (linter rules)

rubocop --show-cops

Exclude a cop

rubocop --except {{cop1 cop2 ...}}

Context

tldr-pages: common/rubocop

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