aliases, forward.map, and ndomain.map are typically softlinks to some
other common directory such as HT.STD.
You can create machine classifications, which I call 'HT.XXX' directories,
to hold common files for a particular functional machine class.
total 8
drwxr-xr-x 3 root wheel 512 Jan 26 10:56 .
drwxr-xr-x 7 root wheel 512 Jan 26 10:58 ..
drwxr-xr-x 2 root wheel 512 Jan 26 10:56 CVS
lrwxr-xr-x 1 root wheel 17 Jan 25 10:27 aliases -> ../HT.STD/aliases
lrwxr-xr-x 1 root wheel 21 Jan 25 10:27 forward.map -> ../HT.STD/forward.map
-rw-r--r-- 1 root wheel 263 Jan 24 18:27 fstab
-rw-r--r-- 1 root wheel 750 Jan 24 18:29 ipfw.conf
-rw-r--r-- 1 root wheel 100 Jan 24 18:35 motd
lrwxr-xr-x 1 root wheel 21 Jan 25 10:27 ndomain.map -> ../HT.STD/ndomain.map
-rw------- 1 root wheel 464 Jan 25 13:53 rc.conf.local
-rw-r--r-- 1 root wheel 283 Jan 24 18:33 resolv.conf
