从命令行使用Node JS

Question

I'm totally newbie on node.js so let me explain what I'm trying to do:

I want to install tail-http https://www.npmjs.com/package/tail-http and in this page it clearly says it is operated:

tail-http http://example.com/some-file.log

After install node and npm I cannot install it an use it as a new command, The far I get was:

$ npm init
$ npm install tail-http
$ cd node_modules
$ cd tail-http
$ node index.js http://example.com/some-file.log

That works, but is far from the simple usage expose on that web.

What am I missing?

Answer 1

npm install -g tail-http

将在全球范围内安装它，然后您就可以在任何地方使用它。

Answer 2

Any package installed with -g (global flag) which tells the npm to install globally and available through out the file system. Make sure you logged in as root. Most of the times it throws a permission denied error. Or just use sudo npm install -g tail-http