利用node.js制作命令行工具方法教程（一）

$ mkdir node-commander #创建一个文件夹

$ cd node-commander && mkdir bin

$ npm init #初始化package.json文件<br>$ cd bin && touch web.js #创建命令文件

#!/usr/bin/env node

 

var express = require('express');

var path = process.cwd();

 

function run(argv) {

 if (argv[0] === '-v' || argv[0] === '--version') {

 console.log('version is 1.0.0');

 }

 else if (argv[0] === '-h' || argv[0] === '--help') {

 console.log('usage:\n');

 console.log('-v --version [show version]')

 }

 else if (argv[0] === '-s' || argv[0] === '--start') {

 var app = new express();

 app.use('/static', express.static(path));

 app.listen(8085, function () {

 console.log('server start at port 8085');

 });

 }

}

 

run(process.argv.slice(2));　

node ./bin/web.js a b c

# process.argv的值为[ '/usr/local/bin/node', '/PATH/web.js', 'a', 'b', 'c' ]

"bin": {

 "web": "./bin/web.js"

 },　　

# sudo npm install . -g
/usr/local/bin/web -> /usr/local/lib/node_modules/cli-demo/bin/web.js

/usr/local/lib

`-- cli-demo@1.0.0
...

# which web 

/usr/local/bin/web　　

# web --start

server start at port 8085

# sudo npm link

 

/usr/local/bin/web -> /usr/local/lib/node_modules/cli-demo/bin/web.js

/usr/local/lib/node_modules/cli-demo -> /Users/baidu/hwm/home/demos/node/node-commander