跟着官网快捷安装，出现以下报错信息：
huanghonglindeMacBook-Pro:local huanghonglin$ ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" ==> This script will install: /usr/local/bin/brew /usr/local/Library/... /usr/local/share/man/man1/brew.1 ==> The following directories will be made group writable: /usr/local/. ==> The following directories will have their owner set to huanghonglin: /usr/local/. ==> The following directories will have their group set to admin: /usr/local/. Press RETURN to continue or any other key to abort ==> /usr/bin/sudo /bin/chmod g+rwx /usr/local/. Password: ==> /usr/bin/sudo /usr/sbin/chown huanghonglin /usr/local/. ==> /usr/bin/sudo /usr/bin/chgrp admin /usr/local/. ==> /usr/bin/sudo /bin/mkdir /Library/Caches/Homebrew ==> /usr/bin/sudo /bin/chmod g+rwx /Library/Caches/Homebrew ==> /usr/bin/sudo /usr/sbin/chown huanghonglin /Library/Caches/Homebrew ==> Downloading and installing Homebrew... remote: Counting objects: 3798, done. remote: Compressing objects: 100% (3638/3638), done. remote: Total 3798 (delta 42), reused 509 (delta 24), pack-reused 0 Receiving objects: 100% (3798/3798), 3.24 MiB | 225.00 KiB/s, done. Resolving deltas: 100% (42/42), done. From https://github.com/Homebrew/homebrew * [new branch] master -> origin/master error: unable to unlink old 'share/doc/homebrew/Acceptable-Formulae.md' (Permission denied) error: unable to unlink old 'share/doc/homebrew/Bottles.md' (Permission denied) error: unable to unlink old 'share/doc/homebrew/Brew-Test-Bot-For-Core-Contributors.md' (Permission denied) error: unable to unlink old 'share/doc/homebrew/Brew-Test-Bot.md' (Permission denied) error: unable to unlink old 'share/doc/homebrew/C++-Standard-Libraries.md' (Permission denied) error: unable to unlink old 'share/doc/homebrew/Common-Issues-for-Core-Contributors.md' (Permission denied) error: unable to unlink old 'share/doc/homebrew/Common-Issues.md' (Permission denied) error: unable to unlink old 'share/doc/homebrew/Custom-GCC-and-cross-compilers.md' (Permission denied) error: unable to create file share/doc/homebrew/El_Capitan_and_Homebrew.md (Permission denied) error: unable to unlink old 'share/doc/homebrew/External-Commands.md' (Permission denied) error: unable to unlink old 'share/doc/homebrew/FAQ.md' (Permission denied) error: unable to unlink old 'share/doc/homebrew/Formula-Cookbook.md' (Permission denied) error: unable to unlink old 'share/doc/homebrew/Gems,-Eggs-and-Perl-Modules.md' (Permission denied) error: unable to unlink old 'share/doc/homebrew/Homebrew-0.8.md' (Permission denied) error: unable to unlink old 'share/doc/homebrew/Homebrew-0.9.3.md' (Permission denied) error: unable to unlink old 'share/doc/homebrew/Homebrew-0.9.md' (Permission denied) error: unable to unlink old 'share/doc/homebrew/Homebrew-2.md' (Permission denied) error: unable to unlink old 'share/doc/homebrew/Homebrew-and-Python.md' (Permission denied) error: unable to unlink old 'share/doc/homebrew/How-To-Open-a-Homebrew-Pull-Request-(and-get-it-merged).md' (Permission denied) error: unable to create file share/doc/homebrew/How-to-Create-and-Maintain-a-Tap.md (Permission denied) error: unable to unlink old 'share/doc/homebrew/How-to-build-software-outside-Homebrew-with-Homebrew-keg-only-dependencies.md' (Permission denied) error: unable to unlink old 'share/doc/homebrew/Installation.md' (Permission denied) error: unable to unlink old 'share/doc/homebrew/Interesting-Taps-&-Branches.md' (Permission denied) error: unable to unlink old 'share/doc/homebrew/Maintainer-Guidelines.md' (Permission denied) error: unable to unlink old 'share/doc/homebrew/Migrating-A-Formula-To-A-Tap.md' (Permission denied) error: unable to create file share/doc/homebrew/New-Maintainer-Checklist.md (Permission denied) error: unable to unlink old 'share/doc/homebrew/Press.md' (Permission denied) error: unable to unlink old 'share/doc/homebrew/Python-for-Formula-Authors.md' (Permission denied) error: unable to unlink old 'share/doc/homebrew/Querying-Brew.md' (Permission denied) error: unable to unlink old 'share/doc/homebrew/README.md' (Permission denied) error: unable to create file share/doc/homebrew/Rename-A-Formula.md (Permission denied) error: unable to unlink old 'share/doc/homebrew/The-brew-command.md' (Permission denied) error: unable to unlink old 'share/doc/homebrew/Tips-N'-Tricks.md' (Permission denied) error: unable to unlink old 'share/doc/homebrew/Troubleshooting.md' (Permission denied) error: unable to unlink old 'share/doc/homebrew/Xcode.md' (Permission denied) error: unable to unlink old 'share/doc/homebrew/brew-tap.md' (Permission denied) error: unable to unlink old 'share/doc/homebrew/brew-test-bot-failed-jenkins.png' (Permission denied) error: unable to unlink old 'share/doc/homebrew/brew-test-bot-failed-pr.png' (Permission denied) error: unable to unlink old 'share/doc/homebrew/brew-test-bot-failed-test.png' (Permission denied) error: unable to unlink old 'share/doc/homebrew/brew-test-bot-for-core-contributors-block.png' (Permission denied) error: unable to unlink old 'share/doc/homebrew/brew-test-bot-for-core-contributors-console.png' (Permission denied) error: unable to unlink old 'share/doc/homebrew/brew-test-bot-for-core-contributors-tabs.png' (Permission denied) error: unable to unlink old 'share/doc/homebrew/brew-test-bot-for-core-contributors-trigger.png' (Permission denied) error: unable to unlink old 'share/doc/homebrew/brew-test-bot-passed-jenkins.png' (Permission denied) error: unable to unlink old 'share/doc/homebrew/brew-test-bot-passed-pr.png' (Permission denied) error: unable to unlink old 'share/doc/homebrew/brew-test-bot-triggered-pr.png' (Permission denied) error: unable to create file share/doc/homebrew/brew.1.html (Permission denied) fatal: Could not reset index file to revision 'origin/master'. Failed during: git reset --hard origin/master
解决方案：
1、先删除之前安装的homebrew：
cd `brew --prefix` rm -rf Cellar brew prune rm `git ls-files` rm -r Library/Homebrew Library/Aliases Library/Formula Library/Contributions rm -rf .git rm -rf ~/Library/Caches/Homebrew
2、键入sudo chown -R $USER /usr/local
结果如下：
huanghonglindeMacBook-Pro:local huanghonglin$ sudo chown -R $USER /usr/local huanghonglindeMacBook-Pro:local huanghonglin$ cd /usr/local huanghonglindeMacBook-Pro:local huanghonglin$ ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" ==> This script will install: /usr/local/bin/brew /usr/local/Library/... /usr/local/share/man/man1/brew.1 Press RETURN to continue or any other key to abort ==> Downloading and installing Homebrew... remote: Counting objects: 3798, done. remote: Compressing objects: 100% (3638/3638), done. remote: Total 3798 (delta 42), reused 507 (delta 24), pack-reused 0 Receiving objects: 100% (3798/3798), 3.24 MiB | 12.00 KiB/s, done. Resolving deltas: 100% (42/42), done. From https://github.com/Homebrew/homebrew * [new branch] master -> origin/master HEAD is now at dddf72f nghttp2: update 1.4.0 bottle. ==> Installation successful! ==> Next steps Run `brew help` to get started