-.TH dev_mkdb 8 ""
-.UC 7
-.SH NAME
-dev_mkdb \- create /dev database
-.SH SYNOPSIS
-.B dev_mkdb
-.SH DESCRIPTION
-.I Dev_mkdb
-creates a
-.IR db (3)
-database in ``/var/run/dev.db'' which lists the name and
-.I st_rdev
-field of all of the character and block special files in the ``/dev''
-directory.
-.SH FILES
-/dev Device directory
-.br
-/var/run/dev.db Database file
-.SH SEE ALSO
-ps(1), db(3), kvm_nlist(3), ttyname(3), kvm_mkdb(8)
+.Dd
+.Os
+.Dt DEV_MKDB 8
+.Sh NAME
+.Nm dev_mkdb
+.Nd create
+.Pa /dev
+database
+.Sh SYNOPSIS
+.Nm dev_mkdb
+.Sh DESCRIPTION
+The
+.Nm dev_mkdb
+command creates a
+.Xr db 3
+hash access method database in
+.Dq Pa /var/run/dev.db
+which contains the names of all of the character and block special
+files in the
+.Dq Pa /dev
+directory, using the file type and the
+.Fa st_rdev
+field as the key.
+.Pp
+Keys are a structure containing a mode_t followed by a dev_t,
+with any padding zero'd out.
+The former is the type of the file (st_mode & S_IFMT),
+the latter is the st_rdev field.
+.Sh FILES
+.Bl -tag -width /var/run/dev.db -compact
+.It Pa /dev
+Device directory.
+.It Pa /var/run/dev.db
+Database file.
+.El
+.Sh SEE ALSO
+.Xr ps 1 ,
+.Xr stat 2 ,
+.Xr db 3 ,
+.Xr devname 3 ,
+.Xr kvm_nlist 3 ,
+.Xr ttyname 3 ,
+.Xr kvm_mkdb 8
+.Sh HISTORY
+The
+.Nm dev_mkdb
+command appeared in
+.Bx 4.4 .