更新ubuntu软件源
sudo apt-get updatesudo apt-get install -y python-software-properties software-properties-commonsudo add-apt-repository ppa:chris-lea/node.jssudo apt-get update
安装nodejs
sudo apt-get install nodejssudo apt install nodejs-legacysudo apt install npm
更新npm的包镜像源，方便快速下载
sudo npm config set registry https://registry.npm.taobao.orgsudo npm config list
全局安装n管理器(用于管理nodejs版本)
sudo npm install n -g
安装最新的nodejs（stable版本）
sudo n stablesudo node -v
QA
Q: apt-get update找不到文件
// error codeW: The repository 'http://ppa.launchpad.net/chris-lea/node.js/ubuntu xenial Release' does not have a Release file.N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.N: See apt-secure(8) manpage for repository creation and user configuration details.E: Failed to fetch http://ppa.launchpad.net/chris-lea/node.js/ubuntu/dists/xenial/main/binary-amd64/Packages 404 Not FoundE: Some index files failed to download. They have been ignored, or old ones used instead.// A: 修改node相关文件：/etc/apt/sources.list.d/chris-lea-ubuntu-node_js-xenial.listdeb http://ppa.launchpad.net/chris-lea/node.js/ubuntu trusty maindeb-src http://ppa.launchpad.net/chris-lea/node.js/ubuntu trusty main
Q: node -v异常
node -v-bash: /usr/local/bin/node: Permission deniedsudo node -vSegmentation fault (core dumped)// A: 重新安装nodejs手动移除 /usr/local/lib/node_modules整个目录手动移除 /usr/local/bin/node手动移除 /usr/local/bin/n手动移除 /usr/local/bin/npm
ubuntu软件源
修改/etc/apt/sources.list为以下软件源（改前请备份）
163和里面在部分网络下会一直下载失败，可以改回官方源下载源列表
Ubuntu官方
deb http://cn.archive.ubuntu.com/ubuntu/ xenial main restricted universe multiversedeb http://cn.archive.ubuntu.com/ubuntu/ xenial-security main restricted universe multiversedeb http://cn.archive.ubuntu.com/ubuntu/ xenial-updates main restricted universe multiversedeb http://cn.archive.ubuntu.com/ubuntu/ xenial-backports main restricted universe multiversedeb http://cn.archive.ubuntu.com/ubuntu/ xenial-proposed main restricted universe multiversedeb-src http://cn.archive.ubuntu.com/ubuntu/ xenial main restricted universe multiversedeb-src http://cn.archive.ubuntu.com/ubuntu/ xenial-security main restricted universe multiversedeb-src http://cn.archive.ubuntu.com/ubuntu/ xenial-updates main restricted universe multiversedeb-src http://cn.archive.ubuntu.com/ubuntu/ xenial-backports main restricted universe multiversedeb-src http://cn.archive.ubuntu.com/ubuntu/ xenial-proposed main restricted universe multiverse