Angular 5中ng与ng2命令的区别及开发选用咨询

Hey there! As someone who's navigated Angular CLI versions since the early days, let me break this down for you clearly:

1. The Core Difference Between ng and ng2 #

First off: ng2 is not an official Angular CLI command. The official CLI tool for Angular (starting from Angular 2 all the way through later versions like 5) uses ng as its primary command.

The ng2 command you're seeing is almost certainly one of two things:

• A community-created alias from early Angular 2 days, when developers wanted to distinguish Angular's CLI from older tools like AngularJS's angular-cli;
• A manual alias set up in your local environment (like a bash/zsh alias or Windows doskey) pointing to the official ng command.

This is why you won't find any mention of ng2 in the official angular.io docs—it's never been part of the official tooling.

2. Which Command Should You Use for Development? #

Stick with ng—no exceptions. It's the official, maintained CLI tool that all Angular documentation, tutorials, and community support relies on. Using ng2 could lead to confusion down the line, especially if it's linked to a non-official tool, and you'll miss out on official updates and bug fixes.

3. Bootstrap Code Differences: ng new app vs ng2 new app #

If ng2 is just an alias for ng (the most likely scenario), the generated bootstrap code and entire project structure will be identical.

If by some chance ng2 points to a third-party or outdated CLI tool (super rare for Angular 5), you might see minor differences—like older dependency versions or slightly different bootstrapping logic. But again, this is not the norm.

Quick Check to Confirm #

To verify if ng2 is just an alias:

• On Linux/macOS, run which ng and which ng2 in your terminal. If they point to the same file, it's an alias.
• On Windows, run where ng and where ng2 to check the executable paths.

As a new Angular developer, you can safely ignore ng2 entirely and focus on mastering the official ng command—it's all you'll need for building, testing, and deploying your Angular apps.

内容的提问来源于stack exchange，提问作者Tragaknight