Use echo instead of printf, or use %% with printf to get a single "%".

This works for me. I have no idea why it doesn't for you.

That's because the {cell-signal-strength} property isn't there when in Flightmode.

To correct it:

{cell-signal-strength?{script: sh signalbar.sh}}{{red}}{cell-signal-strength!Flugmodus an ✈}

You can drop the -1 evaluation from your script, too, if you want.



In case somebody who knows missed this:

Does anyone know how to get the current cellular radio mode (2g or 3g)?