npm命令

npm doc: [url]https://www.npmjs.org/doc/[/url]
package.json doc：[url]https://www.npmjs.org/doc/json.html[/url]
template：[url]http://browsenpm.org/package.json[/url]

[/code]
查看包最新版本：

$ npm view <package-name> version
Example

//useful command
$ npm view underscore version
1.5.1

npm prune //去掉多余的包
npm prune --production //去掉dev包
npm install --production  //不安装dev包
npm link
npm publish
npm install async --save

Simply change every dependency's version to *, then run

npm update --save

"dependencies": {
"express": "*"
}
After:
"dependencies": {
"express": "~3.2.0",
}