ubuntu下用npm安装uglifyjs错误

username@ubuntu:~$ npm install uglify-js -g

npm http GET https://registry.npmjs.org/uglify-js

npm http 304 https://registry.npmjs.org/uglify-js

npm ERR! Could not create /usr/local/lib/node_modules/___uglify-js.npm

npm ERR! error installing uglify-js@1.2.5