A Unix-domain socket is used to communicate between \fIgnuclient\fP
and \fIgnuserv\fP if the symbol UNIX_DOMAIN_SOCKETS is defined at the
top of gnuserv.h. A file called /tmp/gsrvdir????/gsrv is created for
-communication and if deleted will cause communication between server
-and client to fail. Only the user running gnuserv will be able to
-connect to the socket.
+communication. If the symbol USE_TMPDIR is set at the top of gnuserv.h,
+$TMPDIR, when set, is used instead of /tmp. If that file is deleted,
+or TMPDIR has different values for the server and the client, communication
+between server and client will fail. Only the user running gnuserv will be
+able to connect to the socket.
.SH INTERNET-DOMAIN SOCKETS
Internet-domain sockets are used to communicate between
\fIgnuclient\fP and \fIgnuserv\fP if the symbol