tldr/pages/common/ruff-check.md

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# ruff check
> An extremely fast Python linter. `check` is the default command - it can be omitted everywhere.
> If no files or directories are specified, the current working directory is used by default.
> More information: <https://docs.astral.sh/ruff/linter>.
- Run the linter on the given files or directories:
`ruff check {{path/to/file_or_directory1 path/to/file_or_directory2 ...}}`
- Apply the suggested fixes, modifying the files in-place:
`ruff check --fix`
- Run the linter and re-lint on change:
`ruff check --watch`
- Only enable the specified rules (or all rules), ignoring the configuration file:
`ruff check --select {{ALL|rule_code1,rule_code2,...}}`
- Additionally enable the specified rules:
`ruff check --extend-select {{rule_code1,rule_code2,...}}`
- Disable the specified rules:
`ruff check --ignore {{rule_code1,rule_code2,...}}`
- Ignore all existing violations of a rule by adding `# noqa` directives to all lines that violate it:
`ruff check --select {{rule_code}} --add-noqa`