How to share node value with another node to keep them sync How should I setup a driver to keep two values same across blend file?
Like ...
World &gt; Mapping node &gt; Z Rotation  value to Object &gt; Mapping node &gt; Z Rotation
It would be handy in case like when you reconstruct environment from equirectangular texture set for World shader and same texture is used for an object I reconstruct like here.
You can simply copy-paste the driver, the values should be the same.

RMB &gt; Copy Driver from one Mapping node
RMB &gt; Paste Driver into the second one
Done.