Linux 在Ubuntu上安装Angular CLI

我正在开发xubuntu 16.04 LTS版本，并试图在我的机器上安装Angular cli。我已经尝试过删除、清理npm缓存，然后重新安装，但没有效果。当我在控制台中写入

npm install-g@angular/cli

时，出现以下错误：

$ npm install -g @angular/cli
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@^1.0.0 (node_modules/@angular/cli/node_modules/chokidar/node_modules/fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.1.1: wanted {"os":"darwin","arch":"any"} (current: {"os":"linux","arch":"x64"})
npm ERR! Linux 4.4.0-78-generic
npm ERR! argv "/usr/bin/nodejs" "/usr/bin/npm" "install" "-g" "@angular/cli"
npm ERR! node v6.10.0
npm ERR! npm  v3.10.10
npm ERR! path /usr/lib/node_modules
npm ERR! code EACCES
npm ERR! errno -13
npm ERR! syscall access

npm ERR! Error: EACCES: permission denied, access '/usr/lib/node_modules'
npm ERR!     at Error (native)
npm ERR!  { Error: EACCES: permission denied, access '/usr/lib/node_modules'
npm ERR!     at Error (native)
npm ERR!   errno: -13,
npm ERR!   code: 'EACCES',
npm ERR!   syscall: 'access',
npm ERR!   path: '/usr/lib/node_modules' }
npm ERR! 
npm ERR! Please try running this command again as root/Administrator.

npm ERR! Please include the following file with any support request:
npm ERR!     /home/papamilo/npm-debug.log

---

尝试以root用户身份运行它，如下所示：

$ sudo npm install -g @angular/cli