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I'm new to using Mac OS X. From my understanding, it uses Linux under the covers. I have a need to add an environment variable. Currently, whenever I start a terminal window, I've been executing export MY_ENVIRONMENT_VARIABLE=enabled. I would like to automatically do this, system wide, when the machine starts.

How do I do that on Mac OS X? I tried adding the above line to ~/.bashrc via nano without any luck. How should I set this environment variable?

Thank you!

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    BSD, not Linux. – JdeBP May 1 '15 at 16:08
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To affect system-wide settings, you probably should add:

export MY_ENVIRONMENT_VARIABLE=enabled

to /etc/profile or /etc/bashrc (the latter is sourced from /etc/profile).

OSX uses bash by default for its /bin/sh. However, it does not use "Linux under the covers", but rather is mostly BSD (with some exceptions such as bash).

Here are some related questions/discussion (which suggest OSX-specific places to modify instead, e.g., environment.plist):

  • What do you mean by 'modify /etc/bashrc'. What to put there in modifications?? – IgorGanapolsky Nov 29 '15 at 16:52
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    @igor You add export MY_ENVIRONMENT_VARIABLE=enabled to /etc/profile or /etc/bashrc – wisbucky Apr 20 '16 at 18:45

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