執行bower命令后出現以下錯誤提示：

bower ESUDO?????????Cannot be run with sudo

Additional error details:
Since bower is a user command, there is no need to execute it with superuser permissions.
If you're having permission errors when using bower without sudo, please spend a few minutes learning more about how your system should work and make any necessary repairs.

http://www.joyent.com/blog/installing-node-and-npm
https://gist.github.com/isaacs/579814

You can however run a command with sudo using --allow-root option

解決方法有兩種：

???1，根據錯誤提示在bower命令后面加--allow-root ，例如 bower install --allow-root

???2，增加一個配置文件使得運行bower時候為root權限，~/.bowerrc

內容如下

{"allow_root": true }

?

總結

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