Copy settings from one particle system to another I'm trying to copy specific settings (that are the same across all of my hair particle systems) on a character to all other systems... but I can only see how to do it manually and I'm thinking there has to be a way to simply apply the same settings to other systems. Ex: I want all of my hair particle sysyems to have Adaptive render enabled with 2 degrees and 3 pixels while also having B-Spline enabled at 5 steps. I have one setting that's the way I want it but the others need to be updated. Any ideas other than manually going through all of them? (I have 12 systems so it's very tedious)
If you can do some python. 
Traverse all the objects and then traverse all the modifier of this object, if the modifer is a subsurf set the modifier correctly. 

for ob in bpy.data.objects:
    for m in ob.modifiers:
        if m.type == "SUBSURF":
            ob.cycles.use_adaptive_subdivision = True
            ob.cycles.dicing_rate = 3
            ....


And do the same for the particule system:

for ob in bpy.data.object:
    for psys in ob.particle_systems: 
        psys.use_hair_bspline = True
        psys.render_step = 5
        psys.adaptive_angle = 2
        psys.adaptive_pixel = 3