Propagating ACL’s via command line… Is it possible?

Hello all, Does anyone know of a way to propagate permissions via command line? I'm in a situation where I have to had to change permissions on over 200 folders in a automated Structure. I can handle changing the ACL via chmod, but cannot find a way to duplicate selecting "Propogate ACLS" in WGM via command line. Any help would be appreciated. Kindest Regards, Daniel Costello