diff -ur --unidirectional-new-file skipsrc-1.0.orig/certs/lib/test_passwd.C skipsrc-1.0/certs/lib/test_passwd.C
--- skipsrc-1.0.orig/certs/lib/test_passwd.C	Fri Oct 25 13:11:50 1996
+++ skipsrc-1.0/certs/lib/test_passwd.C	Mon Dec 15 16:56:09 1997
@@ -46,6 +46,7 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <unistd.h>
 #include "Bstream.h"
 #include "Bigint.h"
 #include "ObjId.h"