安装Karma（Testacular）时出错
我有我的机器上运行的节点版本v0.8.18，我试图安装Karma（Testacular），但不断收到以下错误。 我无法理解错误，有没有人遇到这个问题，或知道什么是缺less的？
ruby-2.0.0-p0 AngularTut marty$ npm install -g karma npm http GET https://registry.npmjs.org/karma npm http 304 https://registry.npmjs.org/karma npm ERR! Error: EACCES, mkdir '/usr/local/lib/node_modules/karma' npm ERR! { [Error: EACCES, mkdir '/usr/local/lib/node_modules/karma'] npm ERR! errno: 3, npm ERR! code: 'EACCES', npm ERR! path: '/usr/local/lib/node_modules/karma', npm ERR! fstream_type: 'Directory', npm ERR! fstream_path: '/usr/local/lib/node_modules/karma', npm ERR! fstream_class: 'DirWriter', npm ERR! fstream_stack: npm ERR! [ 'DirWriter._create (/usr/local/lib/node_modules/npm/node_modules/fstream/lib/dir-writer.js:36:23)', npm ERR! '/usr/local/lib/node_modules/npm/node_modules/mkdirp/index.js:37:53', npm ERR! 'Object.oncomplete (fs.js:297:15)' ] } npm ERR! npm ERR! Please try running this command again as root/Administrator. npm ERR! System Darwin 12.3.0 npm ERR! command "node" "/usr/local/bin/npm" "install" "-g" "karma" npm ERR! cwd /Users/marty/Web/AngularTut npm ERR! node -v v0.8.18 npm ERR! npm -v 1.2.2 npm ERR! path /usr/local/lib/node_modules/karma npm ERR! fstream_path /usr/local/lib/node_modules/karma npm ERR! fstream_type Directory npm ERR! fstream_class DirWriter npm ERR! code EACCES npm ERR! errno 3 npm ERR! stack Error: EACCES, mkdir '/usr/local/lib/node_modules/karma' npm ERR! fstream_stack DirWriter._create (/usr/local/lib/node_modules/npm/node_modules/fstream/lib/dir-writer.js:36:23) npm ERR! fstream_stack /usr/local/lib/node_modules/npm/node_modules/mkdirp/index.js:37:53 npm ERR! fstream_stack Object.oncomplete (fs.js:297:15) npm ERR! npm ERR! Additional logging details can be found in: npm ERR! /Users/marty/Web/AngularTut/npm-debug.log npm ERR! not ok code 0 在sudo前添加sudo 。
sudo npm install -g karma