簡單說明
NVM全稱為Node Version Manager铆遭，是一個存放在github上的工具缘缚，用于管理Node.js版本煤痕，如果要使用Node.js則建議先安裝NVM虽惭。在github上有對nvm詳細的描述橡类。github地址：https://github.com/creationix/nvm。
安裝NVM（依賴GIT芽唇，請確保已安裝GIT）
一顾画、運行命令
$ curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.33.11/install.sh | bash
或者
$ wget -qO- https://raw.githubusercontent.com/creationix/nvm/v0.33.11/install.sh | bash
建議使用curl的方式取劫，安裝后將創(chuàng)建目錄~/.nvm并將內(nèi)容存放在這里。
命令執(zhí)行時注意查看日志研侣，如下圖說明缺少環(huán)境變量配置
- 第一處提示在
~/.bashrc,~/.bash_profile,~/.zshrc,~/.profile都沒有找到所需要的配置信息谱邪。 - 第二處提示我們可以將
export NVM_DIR...這兩句句命令添加到恰當(dāng)?shù)奈募校簿褪巧厦媪谐龅乃膫€文件中的一個庶诡。 - 第三處的意思就是如果現(xiàn)在需要使用nvm惦银，可以直接執(zhí)行如下命令，然后就可以使用nvm了（這種方式在重新啟動Terminal以后無法繼續(xù)使用nvm）末誓。
為了方便扯俱，我把這幾句命令提取出來如下：
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
二、經(jīng)過第一步的分析喇澡，需要將以上代碼添加至~/.bash_profile或者~/.profile文件中
為了能夠在重啟（在Mac上則為重啟Terminal）以后還能繼續(xù)使用NVM蘸吓，我們可以把這段配置信息添加到~/.bash_profile或者~/.profile文件中，經(jīng)過實踐測試添加到~/.bashrc或~/.zshrc文件中均無法在重啟Terminal后使用NVM撩幽。
具體操作如下：
$ cd ~
$ vim .bash_profile
## 將export NVM_DIR ... 粘貼到文件中
## ESC -> 鍵入":" -> 鍵入"wq" -> 回車保存
## 讓配置文件里面生效
$ source .bash_profile
完成后運行nvm測試库继，如輸出如下說明已安裝成功
$ nvm
Node Version Manager
Note: <version> refers to any version-like string nvm understands. This includes:
- full or partial version numbers, starting with an optional "v" (0.10, v0.1.2, v1)
- default (built-in) aliases: node, stable, unstable, iojs, system
- custom aliases you define with `nvm alias foo`
Any options that produce colorized output should respect the `--no-colors` option.
Usage:
nvm --help Show this message
nvm --version Print out the latest released version of nvm
nvm install [-s] <version> Download and install a <version>, [-s] from source. Uses .nvmrc if available
--reinstall-packages-from=<version> When installing, reinstall packages installed in <node|iojs|node version number>
--lts When installing, only select from LTS (long-term support) versions
--lts=<LTS name> When installing, only select from versions for a specific LTS line
nvm uninstall <version> Uninstall a version
nvm uninstall --lts Uninstall using automatic LTS (long-term support) alias `lts/*`, if available.
nvm uninstall --lts=<LTS name> Uninstall using automatic alias for provided LTS line, if available.
nvm use [--silent] <version> Modify PATH to use <version>. Uses .nvmrc if available
--lts Uses automatic LTS (long-term support) alias `lts/*`, if available.
--lts=<LTS name> Uses automatic alias for provided LTS line, if available.
nvm exec [--silent] <version> [<command>] Run <command> on <version>. Uses .nvmrc if available
--lts Uses automatic LTS (long-term support) alias `lts/*`, if available.
--lts=<LTS name> Uses automatic alias for provided LTS line, if available.
nvm run [--silent] <version> [<args>] Run `node` on <version> with <args> as arguments. Uses .nvmrc if available
--lts Uses automatic LTS (long-term support) alias `lts/*`, if available.
--lts=<LTS name> Uses automatic alias for provided LTS line, if available.
nvm current Display currently activated version
nvm ls List installed versions
nvm ls <version> List versions matching a given <version>
nvm ls-remote List remote versions available for install
--lts When listing, only show LTS (long-term support) versions
nvm ls-remote <version> List remote versions available for install, matching a given <version>
--lts When listing, only show LTS (long-term support) versions
--lts=<LTS name> When listing, only show versions for a specific LTS line
nvm version <version> Resolve the given description to a single local version
nvm version-remote <version> Resolve the given description to a single remote version
--lts When listing, only select from LTS (long-term support) versions
--lts=<LTS name> When listing, only select from versions for a specific LTS line
nvm deactivate Undo effects of `nvm` on current shell
nvm alias [<pattern>] Show all aliases beginning with <pattern>
nvm alias <name> <version> Set an alias named <name> pointing to <version>
nvm unalias <name> Deletes the alias named <name>
nvm reinstall-packages <version> Reinstall global `npm` packages contained in <version> to current version
nvm unload Unload `nvm` from shell
nvm which [<version>] Display path to installed node version. Uses .nvmrc if available
nvm cache dir Display path to the cache directory for nvm
nvm cache clear Empty cache directory for nvm
Example:
nvm install v0.10.32 Install a specific version number
nvm use 0.10 Use the latest available 0.10.x release
nvm run 0.10.32 app.js Run app.js using node v0.10.32
nvm exec 0.10.32 node app.js Run `node app.js` with the PATH pointing to node v0.10.32
nvm alias default 0.10.32 Set default node version on a shell
Note:
to remove, delete, or uninstall nvm - just remove the `$NVM_DIR` folder (usually `~/.nvm`)
卸載NVM
執(zhí)行下面的命令移除nvm內(nèi)容
cd ~
rm -rf .nvm
移除掉~/.profile, ~/.bash_profile, ~/.zshrc, ~/.bashrc文件中關(guān)于nvm的配置
