aliases, forward.map, and ndomain.map are typically softlinks to some
    other common directory such as HT.STD.  Also syslog.conf and ttys.

    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
lrwxr-xr-x  1 root  wheel   21 Feb  9 01:09 syslog.conf -> ../HT.STD/syslog.conf
lrwxr-xr-x  1 root  wheel   14 Feb  9 01:08 ttys -> ../HT.STD/ttys