用brew安装node遇到的问题

1.Could not symlink share/systemtap/tapset/node.stp/usr/local/share/systemtap/tapset is not writable.

//删除文件夹
sudo rm -rf /usr/local/share/systemtap/
//删除之前安装的node
brew uninstall node
//重新安装
brew install node

原文Permissions denied to override or delete node targets

2.nodejs终端命令行模式怎么退出

nodejs的命令需要在前面加点，可用.help查看所有命令，退出命令是.exit

原文nodejs终端命令行模式怎么退出

3 rm: /usr/local/share/systemtap/tapset/node.stp: Permission denied

//删除文件夹
sudo rm -rf /usr/local/share/systemtap/tapset/node.stp

4.brew doctor后出现Unbrewed header files were found in /usr/local/include.

brew doctor 的作用检查homebrew，各模块是否正常

解决方法：

删除那些文件就可以了。

原文： Warning: Unbrewed header files were found in /usr/local/include. If you didn’t put them there on purpose they could cause problems when building Homebrew formulae, and may need to be deleted.

总结：

我出现这些问题的原因是node之前手动安装了，而node不是用brew安装的，所以会产生这样的问题。实际上，Homebrew 将软件包分装到单独的目录（/usr/local/Cellar），然后 symlink 到 /usr/local 中。

接下来我说说如何遇到上边那些问题的。因为无法还原，就简单的记录下过程。

• 安装node。

  • brew install node

  提示：
  Warning: Could not link node. Unlinking...  
  Error: The `brew link` step did not complete successfully  
  The formula built, but is not symlinked into /usr/local  
  You can try again using `brew link node'  

• 根据提示，进行将brew管理的node和手动安装的node进行链接。

  • brew link node

    Error: Could not symlink file: /usr/local/Cellar/node/0.10.0/bin/node
    Target /usr/local/bin/node already exists. You may need to delete it.
    To force the link and delete this file, do:
    brew link --overwrite formula_name
    To list all files that would be deleted:
    brew link --overwrite --dry-run formula_name

• 我尝试执行brew link –overwrite –dry-run formula_name，列出要删除的冲突文件，比如： /usr/local/bin/node删掉。

//删除
rm  ‘/usr/local/bin/node’
//如果无法删除，则添加-rf,删除前要格外小心，因为-rf他不会提示，就强制删除了。
rm  -rf ‘/usr/local/bin/node’
// 或者获取sudo权限删除
 sudo rm  -rf ‘/usr/local/bin/node’

• 删除完。我遇到开始的第一个问题了。Could not symlink share/systemtap/tapset/node.stp /usr/local/share/systemtap/tapset is not writable。所以，就删除，然后重新安装了一边，就好了。

//删除文件夹
sudo rm -rf /usr/local/share/systemtap/
//删除之前安装的node
brew uninstall node
//重新安装
brew install node

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