0 Homebrew是啥？

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“Homebrew installs the stuff you need that Apple didn’t.——Homebrew 使 OS X 更完整”。

Homebrew的官网[1]（多语言版本）简单明了地介绍了如何安装和使用这个工具，并提供了自己的Wiki。

1 安装Homebrew

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brew的安装很简单，使用一条ruby命令即可，Mac系统上已经默认安装了ruby。

gerryyang@mba :bin$ruby --version
ruby 2.0.0p247 (2013-06-27 revision 41674) [universal.x86_64-darwin13]

关于安装brew的详细说明可以参考其github上的wiki说明[2]：

"
Installation

The suggested and easiest way to install Homebrew is on the homepage. We don’t duplicate it here because it is asecurity risk to list it on a user-editable wiki.

The standard script installs Homebrew to/usr/localso that you don’t need sudo when youbrew install. It is acareful script, it can be run even if you have stuff installed to/usr/localalready. It tells you exactly what it will do before itdoes it too. And you have to confirm everything it will do before itstarts.

There are other ways to install Homebrew which provide you with moreflexibility. They are listed below the requirements.

"

1. gerryyang@mba :~$ruby -e "$(curl -fsSL https://raw.github.com/Homebrew/homebrew/go/install)"

2. It appears Homebrew is already installed. If your intent is to reinstall you

3. should do the following before running this installer again:

4. rm -rf /usr/local/Cellar /usr/local/.git && brew cleanup

由于我的系统上已经安装过brew，因此再次执行安装命令会提示我brew已经存在。

2 Homebrew的用法

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查看brew的具体用法：

1. gerryyang@mba :~$brew

2. Example usage:

3. brew [info | home | options ] [FORMULA...]

4. brew install FORMULA...

5. brew uninstall FORMULA...

6. brew search [foo]

7. brew list [FORMULA...]

8. brew update

9. brew upgrade [FORMULA...]

10. brew pin/unpin [FORMULA...]

11. Troubleshooting:

12. brew doctor

13. brew install -vd FORMULA

14. brew [--env | --config]

15. Brewing:

16. brew create [URL [--no-fetch]]

17. brew edit [FORMULA...]

18. open https://github.com/Homebrew/homebrew/wiki/Formula-Cookbook

19. Further help:

20. man brew

21. brew home

22. gerryyang@mba :~$

3 Homebrew的有趣问题

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下面关于Homebrew的一些常见问题[3]：

(1) 在OS X中找不到想要的软件，可以使用brew安装；

1. gerryyang@mba :~$brew install wget

2. ==> Downloading http://ftpmirror.gnu.org/wget/wget-1.14.tar.gz

3. ######################################################################## 100.0%

4. ==> ./configure --prefix=/usr/local/Cellar/wget/1.14 --sysconfdir=/usr/local/etc

5. ==> make install

6. Warning: Could not link wget. Unlinking...

7. Error: The `brew link` step did not complete successfully

8. The formula built, but is not symlinked into /usr/local

9. You can try again using `brew link wget'

10. Possible conflicting files are:

11. /usr/local/bin/wget

12. /usr/local/share/man/man1/wget.1

13. ==> Summary

14. /usr/local/Cellar/wget/1.14: 8 files, 688K, built in 2.3 minutes

由于之前使用源码方式安装过wget，因此再用brew安装时会提示冲突的错误，因为/usr/locat/bin/wget已经存在。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。

(2) 如何更新本地已安装的package呢？

第一步：先更新brew：

brew update

1. gerryyang@mba:bin$brew update
2. Already up-to-date.

第二步：更新所有package：
brew upgarde

1. gerryyang@mba:bin$brew upgrade

2. ==> Upgrading 1 outdated package, with result:

3. wget 1.15

4. ==> Upgrading wget

5. ==> Installing wget dependency: openssl

6. ==> Downloading https://downloads.sf.net/project/machomebrew/Bottles/openssl-1.0

7. ######################################################################## 100.0%

8. ==> Pouring openssl-1.0.1f.mavericks.bottle.tar.gz

9. ==> Caveats

10. This formula is keg-only, so it was not symlinked into /usr/local.

11. Mac OS X already provides this software and installing another version in

12. parallel can cause all kinds of trouble.

13. The OpenSSL provided by OS X is too old for some software.

14. Generally there are no consequences of this for you. If you build your

15. own software and it requires this formula, you'll need to add to your

16. build variables:

17. LDFLAGS:  -L/usr/local/opt/openssl/lib

18. CPPFLAGS: -I/usr/local/opt/openssl/include

19. ==> security find-certificate -a -p /Library/Keychains/System.keychain > '/usr/l

20. ==> security find-certificate -a -p /System/Library/Keychains/SystemRootCertific

21. ==> mv -f /usr/local/etc/openssl/osx_cert.pem.tmp /usr/local/etc/openssl/osx_cer

22. ==> Summary

23. /usr/local/Cellar/openssl/1.0.1f: 429 files, 15M

24. ==> Installing wget

25. ==> Downloading http://ftpmirror.gnu.org/wget/wget-1.15.tar.gz

26. ######################################################################## 100.0%

27. ==> ./configure --prefix=/usr/local/Cellar/wget/1.15 --sysconfdir=/usr/local/etc --with-ssl=openssl --with-libssl-prefix=/usr/local/opt/openssl --disable-iri

28. ==> make install

29. Warning: Could not link wget. Unlinking...

30. Error: The `brew link` step did not complete successfully

31. The formula built, but is not symlinked into /usr/local

32. You can try again using `brew link wget'

33. Possible conflicting files are:

34. /usr/local/bin/wget

35. /usr/local/share/man/man1/wget.1

36. ==> Summary

37. /usr/local/Cellar/wget/1.15: 8 files, 700K, built in 73 seconds

38. gerryyang@mba:bin$

(3) 如何删除Homebrew？

If you installed to/usr/localthen you can use the script in thisgist to uninstall — it will onlyremove Homebrew and the stuff Homebrew installed leaving anything elsein/usr/localalone.

Provided you haven’t put anything else in Homebrew’s prefix(brew --prefix), you can generally justrm -rfthat directory. Thisis because Homebrew won’t touch files outside its prefix.

(4) Homebrew下载的package存放的路径在哪里？

1. gerryyang@mba:bin$brew --cache

2. /Library/Caches/Homebrew

3. gerryyang@mba:bin$ls /Library/Caches/Homebrew/

4. Formula/                                wget-1.14.tar.gz

5. coreutils-8.22.tar.xz                  wget-1.15.tar.gz

6. openssl-1.0.1f.mavericks.bottle.tar.gz  xz-5.0.5.mavericks.bottle.2.tar.gz

7. gerryyang@mba:bin$ls /Library/Caches/Homebrew/Formula/

8. coreutils.brewing  openssl.brewing  wget.brewing  xz.brewing

9. gerryyang@mba:bin$

(5) 我可以安装自己的stuff在/usr/local吗？

Yes, brew is designed to not get in your way so you can use it how youlike.

Install your own stuff, but be aware that if you install commonlibraries, like libexpat yourself, it may cause trouble when trying tobuild certain Homebrew formula. As a resultbrew doctorwill warn youabout this.

Thus it’s probably better to install your own stuff to the Cellar andthenbrew linkit. Like so:

$ cd foo-0.1 $ brew diy
./configure —prefix=/usr/local/Cellar/foo/0.1 $ ./configure —prefix=/usr/local/Cellar/foo/0.1 [snip] $ make && make install $ brew link foo
Linking /usr/local/Cellar/foo/0.1… 17 symlinks created

在我的环境上检测是这样的：

1. gerryyang@mba:bin$brew doctor

2. Warning: Unbrewed dylibs were found in /usr/local/lib.

3. If you didn't put them there on purpose they could cause problems when

4. building Homebrew formulae, and may need to be deleted.

5. Unexpected dylibs:

6. /usr/local/lib/libboost_atomic.dylib

7. /usr/local/lib/libboost_chrono.dylib

8. /usr/local/lib/libboost_context.dylib

9. /usr/local/lib/libboost_date_time.dylib

10. /usr/local/lib/libboost_filesystem.dylib

11. /usr/local/lib/libboost_graph.dylib

12. /usr/local/lib/libboost_iostreams.dylib

13. /usr/local/lib/libboost_locale.dylib

14. /usr/local/lib/libboost_log.dylib

15. /usr/local/lib/libboost_math_c99.dylib

16. /usr/local/lib/libboost_math_c99f.dylib

17. /usr/local/lib/libboost_math_c99l.dylib

18. /usr/local/lib/libboost_math_tr1.dylib

19. /usr/local/lib/libboost_math_tr1f.dylib

20. /usr/local/lib/libboost_math_tr1l.dylib

21. /usr/local/lib/libboost_prg_exec_monitor.dylib

22. /usr/local/lib/libboost_program_options.dylib

23. /usr/local/lib/libboost_python.dylib

24. /usr/local/lib/libboost_random.dylib

25. /usr/local/lib/libboost_regex.dylib

26. /usr/local/lib/libboost_serialization.dylib

27. /usr/local/lib/libboost_signals.dylib

28. /usr/local/lib/libboost_system.dylib

29. /usr/local/lib/libboost_thread.dylib

30. /usr/local/lib/libboost_timer.dylib

31. /usr/local/lib/libboost_unit_test_framework.dylib

32. /usr/local/lib/libboost_wave.dylib

33. /usr/local/lib/libboost_wserialization.dylib

34. Warning: Unbrewed static libraries were found in /usr/local/lib.

35. If you didn't put them there on purpose they could cause problems when

36. building Homebrew formulae, and may need to be deleted.

37. Unexpected static libraries:

38. /usr/local/lib/libboost_atomic.a

39. /usr/local/lib/libboost_chrono.a

40. /usr/local/lib/libboost_context.a

41. /usr/local/lib/libboost_coroutine.a

42. /usr/local/lib/libboost_date_time.a

43. /usr/local/lib/libboost_exception.a

44. /usr/local/lib/libboost_filesystem.a

45. /usr/local/lib/libboost_graph.a

46. /usr/local/lib/libboost_iostreams.a

47. /usr/local/lib/libboost_locale.a

48. /usr/local/lib/libboost_log.a

49. /usr/local/lib/libboost_math_c99.a

50. /usr/local/lib/libboost_math_c99f.a

51. /usr/local/lib/libboost_math_c99l.a

52. /usr/local/lib/libboost_math_tr1.a

53. /usr/local/lib/libboost_math_tr1f.a

54. /usr/local/lib/libboost_math_tr1l.a

55. /usr/local/lib/libboost_prg_exec_monitor.a

56. /usr/local/lib/libboost_program_options.a

57. /usr/local/lib/libboost_python.a

58. /usr/local/lib/libboost_random.a

59. /usr/local/lib/libboost_regex.a

60. /usr/local/lib/libboost_serialization.a

61. /usr/local/lib/libboost_signals.a

62. /usr/local/lib/libboost_system.a

63. /usr/local/lib/libboost_test_exec_monitor.a

64. /usr/local/lib/libboost_thread.a

65. /usr/local/lib/libboost_timer.a

66. /usr/local/lib/libboost_unit_test_framework.a

67. /usr/local/lib/libboost_wave.a

68. /usr/local/lib/libboost_wserialization.a

69. Warning: You have unlinked kegs in your Cellar

70. Leaving kegs unlinked can lead to build-trouble and cause brews that depend on

71. those kegs to fail to run properly once built. Run `brew link` on these:

72. wget

73. gerryyang@mba:bin$

(6) 为什么选择Homebrew这个名字？
mxcl was too concerned with the beer theme and didn’t consider that the project may actually prove popular. By the time he realized it was too late. However, today, the first google hit for “homebrew” is not beer related ;-)

看来作者是个酒鬼！

(7) 关于更多地QA可以参考Homebrew的Wiki[4]

(8) 一些常用安装推荐

1. gerryyang@mba:bin$brew list
2. coreutils  openssl  wget  xz

Introduction to Coreutils

The GNU Core Utilities are the basic file, shell and text manipulationutilities of the GNU operating system.
These are the core utilitieswhich are expected to exist on every operating system.

http://www.gnu.org/software/coreutils/

4 参考

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[1] http://brew.sh/index\_zh-cn.html

[2] https://github.com/Homebrew/homebrew/wiki/Installation

[3] https://github.com/Homebrew/homebrew/wiki/FAQ

[4] https://github.com/Homebrew/homebrew/wiki