# install 3m安装法 * nvm * npm * nrm ## 安装nvm ~~~ curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.29.0/install.sh | bash ~~~ cat ~/.bashrc ~~~ export NVM_DIR="/home/coding/.nvm" [ -s "$NVM_DIR/nvm.sh" ] && . "$NVM_DIR/nvm.sh" # This loads nvm ~~~ 但coding默认使用的zsh，所以需要把环境变量放到 ~~~ vi ~/.zshrc ~~~ 追加 ~~~ export NVM_DIR="/home/coding/.nvm" [ -s "$NVM_DIR/nvm.sh" ] && . "$NVM_DIR/nvm.sh" # This loads nvm ~~~ 然后，source使环境变量生效 ~~~ source ~/.zshrc ~~~ ## 安装nodejs 4.2是LTS是长期支持版本，无论是开发还是产品模式都推荐安装4.2版本。 ~~~ nvm install 4.2 ~~~ 默认使用4.2版本进行编译，操作如下： ~~~ ➜ workspace git:(i5ting) nvm alias default 4.2 default -> 4.2 (-> v4.2.2) ~~~ 此时，你输入`node -v` ~~~ ➜ workspace git:(i5ting) node -v v4.2.2 ~~~ 如果想安装其他版本，请参照上面步骤 ## 安装或更新npm ~~~ ➜ nodejs-practice git:(master) ✗ node -v v4.0.0 ➜ nodejs-practice git:(master) ✗ npm -v 2.14.2 ➜ nodejs-practice git:(master) ✗ npm install -g npm@2.9 ~~~ 说明npm 3.x和2.x差别非常大，3.x目前还不够稳定，建议用2.x ## 安装nrm(npm registry manager) [https://github.com/Pana/nrm](https://github.com/Pana/nrm) nrm can help you easy and fast switch between different npm registries, now include: npm, cnpm, eu, au, sl(strongloop), nj(nodejitsu), pt(Portuguese). Recently npm has some problem frequently, nrm will be helpful to all noders. registry是指从哪个源下载nodejs模块 ~~~ $ npm install -g nrm ~~~ * nrm test * nrm ls * nrm use