How to define environment variable Environment?

Question

cmd/bat

According to the manual
github.com/MxUpdate/Manual/tree/master/chapter-1-installation
I need to set the MXUPDATE_PATH environment variable.

How to properly define the MXUPDATE_PATH environment variable?

Answer 1

to set a variable within the current terminal session:
set MXUPDATE_PATH=C:\project\MxUpdate\
to set a variable completely:
setx MXUPDATE_PATH C:\project\MxUpdate\

Answer 2

In Windows search type "system environment variables" (usually just env is enough). Well, then you will understand further in the windows.