Learn angular gulp of the command line can not be executed

In the project, then from the SVN Checkout, packages.json project through the mounting node_modules dependencies: entering directory is gulpfile.js (D: \ web), open the command line, the input npm install 

npm install
if the following:

 

After loading is completed, (gulpfile.js correct configuration file) or gulp gulp-v input related commands (e.g. gulp less, gulp build) given below FIG.

 

 problem analysis:

One reason: the environment variable is not set

Two reasons: not installed global gulp, installed only local gulp, the command line can not be performed gulp-v, can not execute gulp other related commands

Solution:

Solution one: set the environment variable

1. Computer (right click) -> Properties -> Advanced System Settings -> Advanced -> Environment Variables

2. Find the node global file path, enter npm config get prefix

GET prefix config npm
C: \ the Users \ Administrator \ AppData \ Roaming \ npm this path is the path node Global File

 

 

 

3. Close the command line window re-opens

Solution two: global installed gulp

1. Description: The purpose is to perform global installation gulp by gulp task it

2. Install: Command Prompt implementation of npm install gulp -g

3. command prompt execution gulp -v, verify that it is installed correctly

The version number appears, the problem has been resolved, you can use the gulp-v, gulp less, gulp build to perform operations such as

 

Summary:
1. After two ways to configure complete, are required to close the command prompt after re-open, to work.

Do not install a global gulp 2. Install only local gulp, the command line can not be performed gulp-v, can not execute gulp other related commands.
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Original link: https: //blog.csdn.net/ganeshys2017/article/details/77341359

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Origin www.cnblogs.com/qinxuhui/p/11776501.html