[Gmsh] Tweak geometry scripts from the command line?

[Rui Maciel]

I've defined a geometry script and I intended to write a small shell 
script to automate the generation of a set of meshes.  The thing is, in 
order to do that there must be a way to tweak some options defined 
within the geometry script.  After a bit of digging through Gmsh's 
mailing list I found a reference[1] to the -string command line option, 
but I hadn't any success in that.

So, is there a way to run gmsh from the command line so that it is 
possible to tweak variables defined in a geometry script?


Thanks in advance,
Rui Maciel


[1] http://www.geuz.org/pipermail/gmsh/2005/001710.html