So ... I have played a little more ... Thanks to Larry for listing the serial commands ... I can now command my nanoVNA from ubnuntu using them .. and after a play and putting putty on the same virutal drive in PlayOnLinux have been able to confimr that simply linking the comport through works ..
ln -s /dev/ttyACM0 ~/PlayOnLinux\'s\ virtual\ drives/'NanoVNA'/dosdevices/com*
where * is whatever com port you wish to use and NanoVNA is the name of your Virtual Drive.
Putty will connect and work :) however NanoVNA Sharp still refuses to connect :(
More fun ... if anyone whishes me to try other software yell ... also getting POL to run the nanovnasharp program was a little fun ... when setting up the virtual drive you need to remove mono completely and then add the dotnet40 or above component .. if the mono compoent is still installed rthey clash and crash :(
