最近新配了一臺電腦，總結一下。
一、安裝brew
1、安裝brew
$ curl -LsSf http://github.com/mxcl/homebrew/tarball/master | sudo tar xvz -C/usr/local --strip 1
2、安裝完成后執行
$ brew
提示Please run brew update!
3、按照提示更新，執行
$ brew update
報錯：Error: /usr/local must be writable!
4、賦給/usr/local目錄權限，執行
$ sudo chown -R $(whoami) /usr/local
5、再次執行
$ brew update
提示：
remote: Total 0 (delta 0), reused 0 (delta 0), pack-reused 0
HEAD is now at c3f959d Merge pull request #1542 from woodruffw/deprecate-utils-json
To restore the stashed changes to /usr/local run:
'cd /usr/local && Git stash pop'
==> Homebrew has enabled anonymous aggregate user behaviour analytics
Read the analytics documentation (and how to opt-out) here:
https://git.io/brew-analytics
==> Tapping homebrew/core
Cloning into '/usr/local/Library/Taps/homebrew/homebrew-core'...
remote: Counting objects: 3757, done.
remote: Compressing objects: 100% (3647/3647), done.
remote: Total 3757 (delta 13), reused 305 (delta 1), pack-reused 0
Receiving objects: 100% (3757/3757), 3.00 MiB | 30.00 KiB/s, done.
Resolving deltas: 100% (13/13), done.
Checking connectivity... done.
Tapped 3636 formulae (3,784 files, 9.3M)
Already up-to-date.
Error: Could not link:
/usr/local/share/doc/homebrew
Please delete these paths and run `brew update`.
==> Migrating HOMEBREW_REPOSITORY (please wait)...
Error: Could not link:
/usr/local/share/doc/homebrew
Please delete these paths and run `brew update`.
==> Migrated HOMEBREW_REPOSITORY to /usr/local/Homebrew!
Homebrew no longer needs to have ownership of /usr/local. If you wish you can
return /usr/local to its default ownership with:
sudo chown root:wheel /usr/local
6、按照提示刪除/usr/local/share/doc/homebrew，執行
$ rm -r -f /usr/local/share/doc/homebrew
7、再次執行
$ brew update
安裝成功。
二、安裝node
$ brew install node
node自帶npm，有了npm，就很happy了，make youself happy。
