安裝 Homebrew
打開命令行終端，在終端中輸入如下命令回車執行：
/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"如圖：
安裝過程信息如下：
Last login: Wed Jul 4 19:03:22 on ttys001
bogon:~ duxiaolei$ sudo brew install python3
Password:
sudo: brew: command not found
bogon:~ duxiaolei$ sudo /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
Password:
Don't run this as root!
bogon:~ duxiaolei$ /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
==> This script will install:
/usr/local/bin/brew
/usr/local/share/doc/homebrew
/usr/local/share/man/man1/brew.1
/usr/local/share/zsh/site-functions/_brew
/usr/local/etc/bash_completion.d/brew
/usr/local/Homebrew
==> The following existing directories will be made group writable:
/usr/local/bin
==> The following existing directories will have their owner set to duxiaolei:
/usr/local/bin
==> The following existing directories will have their group set to admin:
/usr/local/bin
==> The following new directories will be created:
/usr/local/Cellar
/usr/local/Homebrew
/usr/local/Frameworks
/usr/local/etc
/usr/local/include
/usr/local/lib
/usr/local/opt
/usr/local/sbin
/usr/local/share
/usr/local/share/zsh
/usr/local/share/zsh/site-functions
/usr/local/var
==> The Xcode Command Line Tools will be installed.
Press RETURN to continue or any other key to abort
==> /usr/bin/sudo /bin/chmod u+rwx /usr/local/bin
==> /usr/bin/sudo /bin/chmod g+rwx /usr/local/bin
==> /usr/bin/sudo /usr/sbin/chown duxiaolei /usr/local/bin
==> /usr/bin/sudo /usr/bin/chgrp admin /usr/local/bin
==> /usr/bin/sudo /bin/mkdir -p /usr/local/Cellar /usr/local/Homebrew /usr/local/Frameworks /usr/local/etc /usr/local/include /usr/local/lib /usr/local/opt /usr/local/sbin /usr/local/share /usr/local/share/zsh /usr/local/share/zsh/site-functions /usr/local/var
==> /usr/bin/sudo /bin/chmod g+rwx /usr/local/Cellar /usr/local/Homebrew /usr/local/Frameworks /usr/local/etc /usr/local/include /usr/local/lib /usr/local/opt /usr/local/sbin /usr/local/share /usr/local/share/zsh /usr/local/share/zsh/site-functions /usr/local/var
==> /usr/bin/sudo /bin/chmod 755 /usr/local/share/zsh /usr/local/share/zsh/site-functions
==> /usr/bin/sudo /usr/sbin/chown duxiaolei /usr/local/Cellar /usr/local/Homebrew /usr/local/Frameworks /usr/local/etc /usr/local/include /usr/local/lib /usr/local/opt /usr/local/sbin /usr/local/share /usr/local/share/zsh /usr/local/share/zsh/site-functions /usr/local/var
==> /usr/bin/sudo /usr/bin/chgrp admin /usr/local/Cellar /usr/local/Homebrew /usr/local/Frameworks /usr/local/etc /usr/local/include /usr/local/lib /usr/local/opt /usr/local/sbin /usr/local/share /usr/local/share/zsh /usr/local/share/zsh/site-functions /usr/local/var
==> /usr/bin/sudo /bin/mkdir -p /Users/duxiaolei/Library/Caches/Homebrew
==> /usr/bin/sudo /bin/chmod g+rwx /Users/duxiaolei/Library/Caches/Homebrew
==> /usr/bin/sudo /usr/sbin/chown duxiaolei /Users/duxiaolei/Library/Caches/Homebrew
==> /usr/bin/sudo /bin/mkdir -p /Library/Caches/Homebrew
==> /usr/bin/sudo /bin/chmod g+rwx /Library/Caches/Homebrew
==> /usr/bin/sudo /usr/sbin/chown duxiaolei /Library/Caches/Homebrew
==> Searching online for the Command Line Tools
==> /usr/bin/sudo /usr/bin/touch /tmp/.com.apple.dt.CommandLineTools.installondemand.in-progress
==> Installing Command Line Tools (macOS High Sierra version 10.13) for Xcode-9.4
==> /usr/bin/sudo /usr/sbin/softwareupdate -i Command\ Line\ Tools\ (macOS\ High\ Sierra\ version\ 10.13)\ for\ Xcode-9.4
Software Update Tool
Downloading Command Line Tools (macOS High Sierra version 10.13) for Xcode
Downloaded Command Line Tools (macOS High Sierra version 10.13) for Xcode
Installing Command Line Tools (macOS High Sierra version 10.13) for Xcode
Done with Command Line Tools (macOS High Sierra version 10.13) for Xcode
Done.
==> /usr/bin/sudo /bin/rm -f /tmp/.com.apple.dt.CommandLineTools.installondemand.in-progress
==> /usr/bin/sudo /usr/bin/xcode-select --switch /Library/Developer/CommandLineTools
==> Downloading and installing Homebrew...
remote: Counting objects: 103857, done.
remote: Compressing objects: 100% (15/15), done.
remote: Total 103857 (delta 12), reused 14 (delta 6), pack-reused 103836
Receiving objects: 100% (103857/103857), 23.64 MiB | 241.00 KiB/s, done.
Resolving deltas: 100% (75737/75737), done.
From https://github.com/Homebrew/brew
* [new branch] master -> origin/master
* [new tag] 0.1 -> 0.1
* [new tag] 0.2 -> 0.2
* [new tag] 0.3 -> 0.3
* [new tag] 0.4 -> 0.4
* [new tag] 0.5 -> 0.5
* [new tag] 0.6 -> 0.6
* [new tag] 0.7 -> 0.7
* [new tag] 0.7.1 -> 0.7.1
* [new tag] 0.8 -> 0.8
* [new tag] 0.8.1 -> 0.8.1
* [new tag] 0.9 -> 0.9
* [new tag] 0.9.1 -> 0.9.1
* [new tag] 0.9.2 -> 0.9.2
* [new tag] 0.9.3 -> 0.9.3
* [new tag] 0.9.4 -> 0.9.4
* [new tag] 0.9.5 -> 0.9.5
* [new tag] 0.9.8 -> 0.9.8
* [new tag] 0.9.9 -> 0.9.9
* [new tag] 1.0.0 -> 1.0.0
* [new tag] 1.0.1 -> 1.0.1
* [new tag] 1.0.2 -> 1.0.2
* [new tag] 1.0.3 -> 1.0.3
* [new tag] 1.0.4 -> 1.0.4
* [new tag] 1.0.5 -> 1.0.5
* [new tag] 1.0.6 -> 1.0.6
* [new tag] 1.0.7 -> 1.0.7
* [new tag] 1.0.8 -> 1.0.8
* [new tag] 1.0.9 -> 1.0.9
* [new tag] 1.1.0 -> 1.1.0
* [new tag] 1.1.1 -> 1.1.1
* [new tag] 1.1.10 -> 1.1.10
* [new tag] 1.1.11 -> 1.1.11
* [new tag] 1.1.12 -> 1.1.12
* [new tag] 1.1.13 -> 1.1.13
* [new tag] 1.1.2 -> 1.1.2
* [new tag] 1.1.3 -> 1.1.3
* [new tag] 1.1.4 -> 1.1.4
* [new tag] 1.1.5 -> 1.1.5
* [new tag] 1.1.6 -> 1.1.6
* [new tag] 1.1.7 -> 1.1.7
* [new tag] 1.1.8 -> 1.1.8
* [new tag] 1.1.9 -> 1.1.9
* [new tag] 1.2.0 -> 1.2.0
* [new tag] 1.2.1 -> 1.2.1
* [new tag] 1.2.2 -> 1.2.2
* [new tag] 1.2.3 -> 1.2.3
* [new tag] 1.2.4 -> 1.2.4
* [new tag] 1.2.5 -> 1.2.5
* [new tag] 1.2.6 -> 1.2.6
* [new tag] 1.3.0 -> 1.3.0
* [new tag] 1.3.1 -> 1.3.1
* [new tag] 1.3.2 -> 1.3.2
* [new tag] 1.3.3 -> 1.3.3
* [new tag] 1.3.4 -> 1.3.4
* [new tag] 1.3.5 -> 1.3.5
* [new tag] 1.3.6 -> 1.3.6
* [new tag] 1.3.7 -> 1.3.7
* [new tag] 1.3.8 -> 1.3.8
* [new tag] 1.3.9 -> 1.3.9
* [new tag] 1.4.0 -> 1.4.0
* [new tag] 1.4.1 -> 1.4.1
* [new tag] 1.4.2 -> 1.4.2
* [new tag] 1.4.3 -> 1.4.3
* [new tag] 1.5.0 -> 1.5.0
* [new tag] 1.5.1 -> 1.5.1
* [new tag] 1.5.10 -> 1.5.10
* [new tag] 1.5.11 -> 1.5.11
* [new tag] 1.5.12 -> 1.5.12
* [new tag] 1.5.13 -> 1.5.13
* [new tag] 1.5.14 -> 1.5.14
* [new tag] 1.5.2 -> 1.5.2
* [new tag] 1.5.3 -> 1.5.3
* [new tag] 1.5.4 -> 1.5.4
* [new tag] 1.5.5 -> 1.5.5
* [new tag] 1.5.6 -> 1.5.6
* [new tag] 1.5.7 -> 1.5.7
* [new tag] 1.5.8 -> 1.5.8
* [new tag] 1.5.9 -> 1.5.9
* [new tag] 1.6.0 -> 1.6.0
* [new tag] 1.6.1 -> 1.6.1
* [new tag] 1.6.2 -> 1.6.2
* [new tag] 1.6.3 -> 1.6.3
* [new tag] 1.6.4 -> 1.6.4
* [new tag] 1.6.5 -> 1.6.5
* [new tag] 1.6.6 -> 1.6.6
* [new tag] 1.6.7 -> 1.6.7
* [new tag] 1.6.8 -> 1.6.8
* [new tag] 1.6.9 -> 1.6.9
HEAD is now at 0c38ceb6f Merge pull request #4411 from commitay/versioned-no-head-spec
==> Tapping homebrew/core
Cloning into '/usr/local/Homebrew/Library/Taps/homebrew/homebrew-core'...
remote: Counting objects: 4800, done.
remote: Compressing objects: 100% (4597/4597), done.
remote: Total 4800 (delta 55), reused 551 (delta 13), pack-reused 0
Receiving objects: 100% (4800/4800), 3.90 MiB | 192.00 KiB/s, done.
Resolving deltas: 100% (55/55), done.
Tapped 4586 formulae (4,841 files, 12.2MB)
==> Cleaning up /Library/Caches/Homebrew...
==> Migrating /Library/Caches/Homebrew to /Users/duxiaolei/Library/Caches/Homebrew...
==> Deleting /Library/Caches/Homebrew...
Already up-to-date.
==> Installation successful!
==> Homebrew has enabled anonymous aggregate user behaviour analytics.
Read the analytics documentation (and how to opt-out) here:
https://docs.brew.sh/Analytics.html
==> Next steps:
- Run `brew help` to get started
- Further documentation:
https://docs.brew.sh
bogon:~ duxiaolei$ 至此，homebrew安裝成功。
下面安裝給出一個用brew安裝boost-1.69版本的庫爲例：
bogon:~ duxiaolei$ brew install boost
Updating Homebrew...
==> Downloading https://homebrew.bintray.com/bottles/boost-1.67.0_1.high_sierra.bottle.tar.gz
######################################################################## 100.0%
==> Pouring boost-1.67.0_1.high_sierra.bottle.tar.gz