It looks like the -z (--without-gui) option disables the --verb parms.
Here is an example that will turn everything into paths, including text and boxes, which works without the -z
inkscape --verb EditSelectAllInAllLayers --verb ObjectToPath --verb FileSave --verb FileClose test.svg
But which does nothing with the -z
inkscape -z --verb EditSelectAllInAllLayers --verb ObjectToPath --verb FileSave --verb FileClose test.svg
It looks like the -z (--without-gui) option disables the --verb parms.
Here is an example that will turn everything into paths, including text and boxes, which works without the -z
inkscape --verb EditSelectAllIn AllLayers --verb ObjectToPath --verb FileSave --verb FileClose test.svg
But which does nothing with the -z
inkscape -z --verb EditSelectAllIn AllLayers --verb ObjectToPath --verb FileSave --verb FileClose test.svg