除了从Apple安装命令行工具的“官方”版本，你也可以从这里安装Kenneth的版本:

https://github.com/kennethreitz/osx-gcc-installer

如果你所追求的只是命令行工具，它甚至不需要XCode。

如何获得安装在Xcode 4.4 / Mac OS X v10.8 (Mountain Lion)或更高版本的命令行构建工具?

对于OS X 10.9，你只需安装Xcode。命令行工具与Xcode捆绑在一起。技术说明TN2339，从命令行构建Xcode常见问题解答:

在OS X 10.9版本的Xcode中，无法下载命令行工具。如何在我的机器上安装它们?

In OS X 10.9, the Downloads pane of Xcode Preferences does not support downloading command-line tools. Use any of the following methods to install command-line tools on your system: If Xcode is installed on your machine, then there is no need to install them. Xcode comes bundled with all your command-line tools. OS X 10.9 includes shims or wrapper executables. These shims, installed in /usr/bin, can map any tool included in /usr/bin to the corresponding one inside Xcode. xcrun is one of such shims, which allows you to find or run any tool inside Xcode from the command line. Use it to invoke any tool within Xcode from the command line. ...

至于大sur..

sudo rm -rf /Library/Developer/CommandLineTools
sudo xcode-select --install

感谢自制啤酒维护者把这有用的消息在酿造医生

我最近不得不通过SSH在Mountain Lion上安装Xcode命令行工具。 注意:我想这个过程对于任何版本的Xcode或OSX都是一样的。只要确保你的路径是正确的。 我是这样做的……

If you don't have a free Apple developer account, register for one Login to https://developer.apple.com/downloads Download the "Command Line Tools for Xcode" appropriate for your version of OSX For me, that was "Command Line Tools (OS X Mountain Lion) for Xcode - April 2014" Copy the dmg file to your remote In the following command, I'm using scp to securely copy the file from my local computer to the remote named remote $ scp ~/Downloads/command_line_tools_for_osx_mountain_lion_april_2014.dmg remote:Downloads/ ssh to your remote $ ssh remote mount the dmg file on the remote Here, I'm using hdiutil to mount the image $ hdiutil attach ~/Downloads/command_line_tools_for_osx_mountain_lion_april_2014.dmg install the package contained in the dmg Here, installer must be run with sudo because this package needs to be installed on the root file system $ cd /Volumes/Command\ Line\ Tools\ \(Mountain\ Lion\) $ sudo installer -pkg Command\ Line\ Tools\ \(Mountain\ Lion\).mpkg -target / unmount the dmg file $ hdiutil detach /Volumes/Command\ Line\ Tools\ \(Mountain\ Lion\) delete the dmg file from the remote; optional I see no purpose keeping it around, but you can if you want. $ rm ~/Downloads/command_line_tools_for_osx_mountain_lion_april_2014.dmg

如果你想使用XCode本身提供的工具版本，你可以使用xcrun(例如xcrun git)。从下载首选项窗格底部的帮助:

注意，您可以在终端中使用XCRUN工具来启动 编译器和其他嵌入在Xcode应用程序中的工具。使用 Xcode - select工具定义激活的Xcode版本。 在终端内输入“man xcrun”以了解更多信息。

尝试进入Xcode > Preferences…>下载并单击命令行工具旁边有向下箭头的圆形按钮。