please install…

出现ValueError: Please install nodejs 5+ and npm before continuing installation. nodejs may be installed using conda or directly from the nodejs website. 需安装：

sudo apt-get install nodejs sudo apt-get install npm

Permission denied

出现OSError: [Errno 13] Permission denied: '/home/xxx/anaconda2/share/jupyter/lab/extensions' 需更改lab文件夹权限：

sudo chmod -R 777 /home/xxx/anaconda2/share/jupyter/lab