So can anyone recommend any good gcode simulators, currently using yagv but I have found it does not support G2 & G3 ie arcs 
I ideally want to start it from the command line and pass a file in so i dont have to interact with the application, also needs to run on linux.
basically using it to test so i dont waste materials 
looks good from the screenshots, but it seems to lack docs I managed to download it but there is no readme that i can see it and nothing obvois to run out of all the jar files 
I just use the Android version. I can just send the gcode straight to my mini PC and view it on my monitor
but i require linux and command line launching unfortunately so android is not an option, I am actually testing some gcode generation code