How do I import a fbx file into blender from command line? I would like to import a fbx file (3Ds Max scene file) and save the project from the command line, how can I do this?
You simply need one operator to import the FBX, and another operator to export the blendfile. Replace the filepath variables with the actual paths you want to use.

# Import FBX
bpy.ops.import_scene.fbx( filepath = yourFBXfilePath )

# Export blend file
bpy.ops.wm.save_mainfile( filepath = yourBlendFilePath )