# xo > A pluggable, zero-configuration linting utility for JavaScript. - Lint files in the "src" directory: `xo` - Lint a given set of files: `xo {{file1}}.js {{file2}}.js` - Automatically fix any lint issues found: `xo --fix` - Lint using spaces as indentation instead of tabs: `xo --space` - Lint using the "prettier" code style: `xo --prettier`