MacOS下nvm的安装
版本记录：
2020.09.18 初版
2020.09.19 解决环境变量添加后，每次打开都需要重新source .bash_profile的问题
一、使用curl安装的步骤
1. 安装命令：
$ curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.35.3/install.sh | bash
2. 可能遇到的问题：
curl: (7) Failed to connect to raw.githubusercontent.com port 443: Connection refused
image.png
- 此问题的解决方案请参照一下这篇文章：
《curl: (7) Failed to connect to raw.githubusercontent.com port 443: Connection refused》
3. 安装：
image.png
4.检查是否安装成功
关闭再打开终端，输入
$ nvm --version
5. 可能遇到的问题
zsh: command not found: nvm
6. 解决问题5的步骤：
① 再次安装,提示已经安装了nvm（不用执行）
image.png
username@usernamedeMacBook-Pro ~ % curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.35.3/install.sh | bash
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 13527 100 13527 0 0 9946 0 0:00:01 0:00:01 --:--:-- 9939
=> nvm is already installed in /Users/username/.nvm, trying to update using git
=> => Compressing and cleaning up git repository
=> nvm source string already in /Users/username/.bash_profile
=> bash_completion source string already in /Users/username/.bash_profile
npm ERR! error in /usr/local/lib/node_modules/egret: ENOENT: no such file or directory, open '/usr/local/lib/node_modules/egret/package.json'
=> You currently have modules installed globally with `npm`. These will no
=> longer be linked to the active version of Node when you install a new node
=> with `nvm`; and they may (depending on how you construct your `$PATH`)
=> override the binaries of modules installed with `nvm`:
/usr/local/lib
├── cnpm@6.1.1
├── error: ENOENT: no such file or directory, open '/usr/local/lib/node_modules/egret/package.json
├── hexo-cli@4.2.0
=> If you wish to uninstall them at a later point (or re-install them under your
=> `nvm` Nodes), you can remove them from the system Node as follows:
$ nvm use system
$ npm uninstall -g a_module
=> Close and reopen your terminal to start using nvm or run the following to use it now:
export NVM_DIR="$HOME/.nvm"
[ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh" # This loads nvm
[ -s "$NVM_DIR/bash_completion" ] && \. "$NVM_DIR/bash_completion" # This loads nvm bash_completion
② 配置.bash_profile（环境变量）
# 进入当前用户的home目录
$ cd ~/
# 创建. bash_profile文件
$ touch .bash_profile
# 创建. bash_profile文件
$ open .bash_profile
在打开的记事本中加入
export NVM_DIR=~/.nvm
source ~/.nvm/nvm.sh
③ 使加入的环境变量生效（很重要🌝）
source .bash_profile
④ 输入nvm --version 检查是否生效
image.png
这里已经显示安装的nvm版本了，说明安装成功啦~~~😆
😏你以为到这里就结束了吗？当然没有！！还是有可能出现以下问题：
环境变量添加后，每次打开都需要重新
source .bash_profile才能使nvm生效，否则依然提示zsh: command not found: nvm
⑤ 在.zshrc中添加环境变量
- 在通过终端在记事本中打开.zshrc
# 注意是在当前用户的home目录
$ open .zshrc
- 在.zshrc文件末尾处添加以下环境变量：
export NVM_DIR="$HOME/.nvm"
[ -s "$NVM_DIR/nvm.sh" ] && . "$NVM_DIR/nvm.sh" # This loads nvm
- 关闭记事本后，在终端中重新启动.zshrc配置
$ source .zshrc
- 这样，以后每次新打开一个bash，nvm都会被自动添加到环境变量中了。
二、参考资料
《-bash: nvm: command not found #576》 —— 全英文警告⚠️，这里面是一些用户对安装遇到的问题进行的讨论
