+queries its database for the name of the device file to be deleted.
+.SH "CONFIGURATION"
+All
+.B udev
+configuration files consist of a set of lines of text. All empty
+lines and lines beginning with a '#' will be ignored.
+.P
+
+.B udev
+expects its main configuration file at
+.IR /etc/udev/udev.conf .
+The file consists of a set of variables and values allowing the user to
+override default udev values. The following variables can be overridden
+in this file:
+.TP
+.B udev_root
+Indicates where to place the device nodes in the filesystem. The default
+value is
+.IR /udev/ .
+.TP
+.B udev_db
+The name and location of the udev database. The default value is
+.IR /udev/.udev.tdb .
+.TP
+.B udev_rules
+This is the location of the udev rules file. The default value for this is
+.IR /etc/udev/udev.rules .
+If a directory is specified, the whole directory is
+scanned for files ending with
+.I .rules
+and all rule files are read in lexical order.
+.TP
+.B udev_permissions
+This is the location of the udev permission file. The default value for this is
+.IR /etc/udev/udev.permissions .
+If a directory is specified, the whole directory is scanned for files ending with
+.I .permissions
+and all permission files are read in lexical order.
+.TP
+.B udev_log
+If you want udev to log some information to the syslog for every node created or
+removed. The default value is
+.IR yes .
+.TP
+.B default_mode
+This is the default mode for all nodes not explicitely matching in the
+permissions file. The default value is
+.IR 0666 .
+.TP
+.B default_owner
+This is the default owner for all nodes not explicitely matching in the
+permissions file. The default value is
+.IR root .
+.TP
+.B default_group
+This is the default group for all nodes not explicitely matching in the
+permissions file. The default value is
+.IR root .
+.br
+.P
+.RI "A sample " udev.conf " might look like this:
+.sp
+.nf
+# udev_root - where to place the device nodes in the filesystem
+udev_root="/udev/"
+
+# udev_db - The name and location of the udev database
+udev_db="/udev/.udev.tdb"
+
+# udev_rules - The location of the directory where to look for files
+ which names ending with .rules
+udev_rules="/etc/udev/"
+
+# udev_permissions - The name and location of the udev permission file
+udev_permissions="/etc/udev/udev.permissions"
+
+# udev_log - set to "yes" if you want logging, else "no"
+udev_log="yes"
+
+# default_mode - set the default mode for all nodes not
+# explicitely matching in the permissions file
+default_mode="0666"
+
+# default_owner - set the default owner for all nodes not
+# explicitely matching in the permissions file
+default_owner="root"
+
+# default_group - set the default group for all nodes not
+# explicitely matching in the permissions file
+default_group="root"
+.fi