Homebrew 是 MacOS 上的套件管理器，Homebrew 会将套件安装到独立目录，并将文件软链接至/usr/local ，所有文件均会被安装到预定义目录下，无需担心 Homebrew 的安装位置。Homebrew 的程式都是简单的 Ruby 脚本，使用 gem 来安装 gems、用 brew 来搞定那些依赖包，使 macOS 更便于使用。
Homebrew 1.3.9 更新内容：
Implement linkage for Linux
Remove unused writer methods for Hbc.caskroom and Hbc.cache
x11_requirement: remove custom minimum version
Utils.popen_read: Nonexistent program should fail
config: Print the linked_version [Linux]
Fix SystemCommand escaping … again
lines_cop: Convert ARGV audit to negative look ahead
Fix a test failure when svn is not installed
Hardware::CPU: Implement OS-agnostic methods
Unify proxy documentation
version/null: add to_i method
cleaner_spec: have a single "cleans files" test
Include SSH_AUTH_SOCK in filtered environment
vendor-install: Add ARM bottle for portable-ruby
Properly upgrade Casks with version :latest
Adding proxy variables to FILTERED_ENV
Fix external Cask commands
whitelisting additional SentinelOne dylib pattern
Whitelist SUDO_ASKPASS environment variable
Only show kext caveat on High Sierra or above
Fix Utils::Shell.parent
Refactor caveats and add kext caveat
Implement brew cask upgrade
bin/brew: don't set empty, unfiltered variables
Enable environment filtering for developers
More environment filtering fixes
Allow optionally using Homebrew's curl
Cleaner: ELF files are executable on Linux
Add CVSRequirement and SubversionRequirement
formula_installer: force fewer default formulae
setup-analytics: Handle missing /proc/.../uuid
lines_cop: Add condition to prevent false positives
Fix SystemCommand escaping
Change the generic bottle tag to processor-system
Installing casks is supported only on macOS
Cask doctor: add macOS & Java versions
bump-formula-pr: fix for when hub isn't configured
下载地址：https://github.com/Homebrew/brew/archive/1.3.9.zip
来自:开源中国社区
