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