+.P
+After device node creation, removal, or network device renaming,
+.B udev
+executes the programs in the directory tree under
+.IR /etc/dev.d/ .
+The name of a program must end with
+.I .dev
+suffix, to be recognized.
+.br
+In addition to the hotplug environment variables,
+.B DEVNAME
+is exported to make the name of the created node, or the name the network
+device is renamed to, available to the executed program. The programs in every
+directory are sorted in lexical order, while the directories are searched in
+the following order:
+.sp
+.nf
+/etc/dev.d/$(DEVNAME)/*.dev
+/etc/dev.d/$(SUBSYSTEM)/*.dev
+/etc/dev.d/default/*.dev
+.fi