Environment variables are used to create shared settings that persist between invocations of applications. They are used to provide information such as paths to important directories, user information and other information programs need for common tasks.

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How to change PATH environment variable to OS X 10.8 Mountain Lion that will be visible to GUI applications?

I tried all methods I heard of for setting environment variables on OS X 10.8 but none of them seems to work. To test, run a bash script from inside a gui application like Eclipse or IntelliJ IDEA. ...
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In Mountain Lion how do I set the PATH environment variable unified for all newly launched applications?

On Ask Different there are many questions regarding the PATH environment variable and how to set it for applications launched by a shell, by spotlight or via the finder (typical questions: How to set ...
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In Mountain Lion why do remote shells via ssh do NOT inherit the environment of the launchd parent process?

When logging in to my Mountain Lion Mac remotely via ssh I do not get the same PATH variable as when I open a shell locally: The local shell inherits its environment as expected from launchd and ...
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Where are system environment variables set in Mountain Lion?

In Lion (and previous releases) it was in .MacOSX/environment.plist. After upgrading to 10.8, the file is still there, but the variables aren’t taking. I’ve also tried adding them to ...