create /dev database
dev_mkdb command creates a
hash(3) access method Berkeley database in
“/var/run/dev.db” which contains the
names of all of the character and block special files in the
“/dev” directory, using the file type
and the st_rdev field as the key.
Keys are a structure containing a mode_t followed by a dev_t, with
any padding zeroed out. The former is the type of the file (st_mode &
S_IFMT), the latter is the st_rdev field.
- device directory
- database file
dev_mkdb command appeared in