How to fix Angular ng: not found

Problem:

When trying to run a command like ng build, e.g. in a CI setup, you see an error message like

sh: ng: not found

Preferred solution:

Only the machine where you’re running this command, you have not installed the ng command globally.

However, your node_modules folder will have a local installation of @angular/cli.

In order to use it, replace ng by ./node_modules/.bin/ng.

For example, a scripts section of your package.json

"scripts": {
  "build": "ng build"
},

would be replaced by

"scripts": {
  "build": "./node_modules/.bin/ng build"
},

Alternative solution:

Install ng globally on the machine running the command by using

sudo npm i -g @angular/cli