英文:
How does installers set PATH variable on Mac OSX?
问题
我想知道Mac OSX上的Mac安装程序是如何设置PATH变量的。
以golang Mac OSX安装程序为例。从链接https://golang.org/doc/install中可以看到：
Mac OS X包安装程序
下载包文件，打开它，并按照提示进行安装Go工具。该包将Go发行版安装到/usr/local/go。
该包应该将/usr/local/go/bin目录放入您的PATH环境变量中。您可能需要重新启动任何打开的终端会话才能使更改生效。
所以，我可以在$PATH中看到/usr/local/go/bin，但它没有在.profile、.bashrc或launchd.conf中设置。
有人可以帮助我理解吗？
英文:
I'm wondering how PATH variable is set by Mac Installers on Mac OSX.
For example:
Look at golang Mac OSX Installer. From the link https://golang.org/doc/install:
> Mac OS X package installer
>
> Download the package file, open it, and follow the prompts to install
> the Go tools. The package installs the Go distribution to
> /usr/local/go.
>
> The package should put the /usr/local/go/bin directory in your PATH
> environment variable. You may need to restart any open Terminal
> sessions for the change to take effect.
So, the I can see /usr/local/go/bin in $PATH but it's not being set in .profile, .bashrc or launchd.conf.
Can anybody please help me to understand?
答案1
得分: 6
在Mac OS X中，有几种设置环境变量的方法（这里有很多讨论）。对于Go包来说，它会在/etc/paths.d目录下添加一个名为go的文件，其中包含/usr/local/go/bin。这里有一个回答另一个问题的答案，解释了一个名为path_helper的实用程序被启动，它会检查/etc/paths.d目录。
你可以使用一个叫做Pacifist的应用程序来检查Go包的内容，并查看它安装的文件。
英文:
There are a couple methods of setting environment variables in Mac OS X (lots of discussion here). In the case the Go package, it is adding a file in /etc/paths.d named go that contains /usr/local/go/bin. Here's an answer to another question explaining that a utility called path_helper is being launched and it's inspecting the /etc/paths.d directory.
You can verify this yourself by using an application called Pacifist to inspect the contents of the Go package and looking at the files it's installing.
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