Shepherd postprocessor to quiet the cacophony that is the category list.
See --help for usage.
default_cmdline can be specified in shepherd.conf
'default_cmdline' => '-select=D,L,M,N,S,Z',
or
'default_cmdline' => '-select=D,L,M,N,S,Z --rules=/home/mythtv/.shepherd/rules.test',
Your tastes in select probably don't mirror mine, so change to taste.