# linebreaks > **Warning** This rule is deprecated and will be removed in the future. See [the migration guide](../../../docs/migration-guide/to-15.md). Specify unix or windows linebreaks. The [`fix` option](../../../docs/user-guide/options.md#fix) can automatically fix all of the problems reported by this rule. ## Options `string`: `"unix"|"windows"` ### `"unix"` Linebreaks _must always_ be LF (`\n`). Lines with CRLF linebreaks are considered problems. ### `"windows"` Linebreaks _must always_ be CRLF (`\r\n`). Lines with LF linebreaks are considered problems.