摘要：
步骤1：在mac上安装brew工具rub-e“$（curl fsSL）https://raw.githubusercontent.com/Homebrew/install/master/install）“安装成功。出现以下提示：HEADisnovataa8eb21Mergepullrequest#2861fromrequestmarkus/ask search ty==˃点击主页
第一步需要在mac上安装brew工具
ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
安装成功，出现如下提示
HEAD is now at aa8eb21 Merge pull request #2861 from reitermarkus/cask-search-tty
==> Tapping homebrew/core
Cloning into '/usr/local/Homebrew/Library/Taps/homebrew/homebrew-core'...
remote: Counting objects: 4491, done.
remote: Compressing objects: 100% (4284/4284), done.
remote: Total 4491 (delta 35), reused 467 (delta 12), pack-reused 0
Receiving objects: 100% (4491/4491), 3.56 MiB | 495.00 KiB/s, done.
Resolving deltas: 100% (35/35), done.
Tapped 4281 formulae (4,536 files, 11.1MB)
==> Cleaning up /Library/Caches/Homebrew...
==> Migrating /Library/Caches/Homebrew to /Users/yanglongfeng/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:
http://docs.brew.sh/Analytics.html
==> Next steps:
- Run `brew help` to get started
- Further documentation:
http://docs.brew.sh
brew help命令查看brew可以使用的命令行
Example usage: brew search [TEXT|/REGEX/] brew (info|home|options) [FORMULA...] brew install FORMULA... brew update brew upgrade [FORMULA...] brew uninstall FORMULA... brew list [FORMULA...] Troubleshooting: brew config brew doctor brew install -vd FORMULA Developers: brew create [URL [--no-fetch]] brew edit [FORMULA...] http://docs.brew.sh/Formula-Cookbook.html Further help: man brew brew help [COMMAND] brew home
例如：安装ideviceinstaller
brew install ideviceinstaller
安装后的软件，存放在/usr/local/Cellar 目录下
当运行命令行安装包时报如下错误：
Could not connect to lockdownd. Exiting.
这可能是ideviceinstaller这个工具出现了问题，下面是网上找到的解决方法：
brew uninstall ideviceinstaller
brew uninstall libimobiledevice
brew install --HEAD libimobiledevice
brew link --overwrite libmobiledevice
brew install ideviceinstaller
brew link --overwrite ideviceinstaller