run.json

{
  "name": "run",
  "command": "ng run <target>",
  "shortDescription": "Runs an Architect target with an optional custom builder configuration defined in your project.",
  "longDescriptionRelativePath": "@angular/cli/src/commands/run/long-description.md",
  "longDescription": "Architect is the tool that the CLI uses to perform complex tasks such as compilation, according to provided configurations.\nThe CLI commands run Architect targets such as `build`, `serve`, `test`, and `lint`.\nEach named target has a default configuration, specified by an `options` object,\nand an optional set of named alternate configurations in the `configurations` object.\n\nFor example, the `serve` target for a newly generated app has a predefined\nalternate configuration named `production`.\n\nYou can define new targets and their configuration options in the `architect` section\nof the `angular.json` file which you can run them from the command line using the `ng run` command.\n",
  "aliases": [],
  "deprecated": false,
  "options": [
    {
      "name": "help",
      "type": "boolean",
      "description": "Shows a help message for this command in the console."
    },
    {
      "name": "target",
      "type": "string",
      "description": "The Architect target to run provided in the following format `project:target[:configuration]`.",
      "positional": 0
    }
  ]
}