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