open a terminal
if it don't work, make sure you have samba installed.
rpm -qa |grep samba
and watch out for samba-X.Y.Z (X.Y.Z is a addition number(mostly version number))
other way to locate where your smbd is (in case you have samba installed(proved above)):
rpm -q --fileprovide samba-X.Y.Z |less |grep smbd