The /dev directory contains the special device files for
all the devices. The device files are named using special
conventions; these are described in appendix 
.
The device files are created during installation, and later with
the /dev/MAKEDEV script. The /dev/MAKEDEV.local is
a script written by the system administrator that creates local-only
device files or links (i.e., those that are not part of the
standard MAKEDEV , such as device files for some non-standard
device driver).