# Execution external commands

**URL:** <https://community.cesium.com/t/execution-external-commands/9645>\
**Category:** CesiumJS\
**Created:** [May 16, 2020, 8:08am UTC](https://community.cesium.com/t/execution-external-commands/9645 "2020-05-16T08:08:40Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![sergemorvan29](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/sergemorvan29/32/2085_2.png) [@sergemorvan29](https://community.cesium.com/u/sergemorvan29)\
**Post date:** [May 16, 2020, 8:08am UTC](https://community.cesium.com/t/execution-external-commands/9645/1 "2020-05-16T08:08:40Z")

</div>

I want execute shell cmd, for example :

const { spawn } = require([‘child\_process’]);  
const child = spawn(‘pwd’);

Bur I receive : Uncaught ReferenceError: require is not defined

---

<div class="post-metadata">

**Author:** ![omar](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/omar/32/1999_2.png) [@omar](https://community.cesium.com/u/omar)\
**Post date:** [May 18, 2020, 7:26pm UTC](https://community.cesium.com/t/execution-external-commands/9645/2 "2020-05-18T19:26:38Z")

</div>

@sergemorvan29 are you using Cesium in this project? If so can you elaborate a bit on what you’re trying to do?

This sounds like a general Node/JavaScript question, which you might get more help with on other forums specific to that.