Return the numeric user identity of a calling process.
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> Return the numeric user identity of the calling process.
``bash`
npm install @stdlib/process-getuid
`javascript`
var getuid = require( '@stdlib/process-getuid' );
#### getuid()
Returns the numeric user identity of the calling process.
`javascript`
var id = getuid();
- The function only returns an integer user identity on POSIX platforms. For all other platforms (e.g., Windows, browsers, and Android), the function returns null.
- See [getuid(2)][getuid].
`javascript
var getuid = require( '@stdlib/process-getuid' );
var uid = getuid();
if ( uid === 0 ) {
console.log( 'Likely running as root.' );
} else {
console.log( 'uid: %d', uid );
}
`
*
- [@stdlib/process-getegid][@stdlib/process/getegid]: return the effective numeric group identity of a calling process.
- [@stdlib/process-geteuid][@stdlib/process/geteuid]: return the effective numeric user identity of a calling process.
- [@stdlib/process-getgid][@stdlib/process/getgid]: return the numeric group identity of a calling process.
*
This package is part of [stdlib][stdlib], a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.
For more information on the project, filing bug reports and feature requests, and guidance on how to develop [stdlib][stdlib], see the main project [repository][stdlib].
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---
See [LICENSE][stdlib-license].
Copyright © 2016-2026. The Stdlib [Authors][stdlib-authors].
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[stdlib]: https://github.com/stdlib-js/stdlib
[stdlib-authors]: https://github.com/stdlib-js/stdlib/graphs/contributors
[umd]: https://github.com/umdjs/umd
[es-module]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Modules
[deno-url]: https://github.com/stdlib-js/process-getuid/tree/deno
[deno-readme]: https://github.com/stdlib-js/process-getuid/blob/deno/README.md
[umd-url]: https://github.com/stdlib-js/process-getuid/tree/umd
[umd-readme]: https://github.com/stdlib-js/process-getuid/blob/umd/README.md
[esm-url]: https://github.com/stdlib-js/process-getuid/tree/esm
[esm-readme]: https://github.com/stdlib-js/process-getuid/blob/esm/README.md
[branches-url]: https://github.com/stdlib-js/process-getuid/blob/main/branches.md
[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/process-getuid/main/LICENSE
[getuid]: http://man7.org/linux/man-pages/man2/getuid.2.html
[@stdlib/process/getegid]: https://www.npmjs.com/package/@stdlib/process-getegid
[@stdlib/process/geteuid]: https://www.npmjs.com/package/@stdlib/process-geteuid
[@stdlib/process/getgid]: https://www.npmjs.com/package/@stdlib/process-getgid