How to get firmware version from a script

[sbsnb]

I automate the task of backing up my router's config, JFFS, and Entware. I would like to also include the firmware version in the backup. I know it's in NVRAM stored as 3rd-party=merlin and innerver=3.0.0.4.386.2_6, which requires a little bit of script-fu to turn into a string like "Merlin-386.2_6."

Instead of reinventing the wheel I tried investigating how it's done for the page headers in the GUI, but that proved to be more difficult than I had imagined.

Any tips on where to look?

 

[RMerlin]

Don't use either of these. First one is not guaranteed to always exist (it's used by one internal service in newer versions), and the second one is used internally for, I believe, the update system. What you need is in the buildno and the extendno variables.