How to list all environment variables

Often times you can find useful information in your environment variables, but since it’s something you don’t have to do everyday it’s easy to forget. Here’s a refresher:

Windows
First bring up a command prompt, then run the following…

set

To see the value of a single environment variable:

echo %ENVVAR%

Linux
Run the following from a terminal to see all environment variables…

printenv

To see the value of a single environment variable:

echo $ENVVAR

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