[Gmsh] optimizing several times through command line & passing args

[Francois Lemery]

Hi,
2 questions:

1: How would I optimize a mesh several times with the netgen algorithm?
Doing
> gmsh -3 -optimize_netgen file.geo
and similar variants only seems to allow me to do this once.  I tried
> gmsh -3 -optimize_netgen file.msh
which did not work

2: Is it possible to feed gmsh an argument from command line like in the
typical c(++) way (e.g. int main(int argc, char** argv))?

Thank you!
François
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