# Node.js
### 安裝 NVM （Node Version Manager）
使用 `brew` 安裝 NVM
~~~
$ brew install nvm
~~~
將下列指令加入 `.bash_profile`（或 `.bashrc`）檔案
~~~
export NVM_DIR=~/.nvm
source $(brew --prefix nvm)/nvm.sh
~~~
重新載入 `.bash_profile` 設定
~~~
$ source .bash_profile
~~~
測試 nvm 指令
~~~
kejyun@KeJyundeMBP:~$ nvm
Node Version Manager
Usage:
nvm help Show this message
nvm --version Print out the latest released version of nvm
nvm install [-s] Download and install a , [-s] from source. Uses .nvmrc if available
nvm uninstall Uninstall a version
nvm use Modify PATH to use . Uses .nvmrc if available
nvm run [] Run with as arguments. Uses .nvmrc if available for
nvm current Display currently activated version
nvm ls List installed versions
nvm ls List versions matching a given description
nvm ls-remote List remote versions available for install
nvm deactivate Undo effects of `nvm` on current shell
nvm alias [] Show all aliases beginning with
nvm alias Set an alias named pointing to
nvm unalias Deletes the alias named
nvm reinstall-packages Reinstall global `npm` packages contained in to current version
nvm unload Unload `nvm` from shell
nvm which [] Display path to installed node version. Uses .nvmrc if available
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 ~/.nvm, ~/.npm, and ~/.bower folders
~~~
### 使用 NVM 安裝 Node.js
找出目前所有可安裝的 Node.js 版本
~~~
$ nvm ls-remote
v0.11.8
v0.11.9
v0.11.10
v0.11.11
v0.11.12
v0.11.13
v0.11.14
v0.11.15
v0.11.16
~~~
安裝 Node.js (0.11.16)
~~~
$ nvm install 0.11.16
~~~
指定nvm使用的 Node.js版本
~~~
nvm use 0.11.16
~~~
預設使用 0.11.16 版本，否則每次重新連線登入，還需要重新 nvm use 一次
~~~
nvm alias default 0.11.16
~~~
列出所有安裝的版本
~~~
$ nvm ls
-> v0.11.16
default -> 0.11.16 (-> v0.11.16)
unstable -> 0.11 (-> v0.11.16) (default)
~~~
測試 Node.js
~~~
$ node -v
v0.11.16
~~~
測試 npm
~~~
$ npm -v
2.3.0
~~~
