diff -Naurp netcat-openbsd-1.89.orig//netcat.c netcat-openbsd-1.89/netcat.c --- netcat-openbsd-1.89.orig//netcat.c 2011-01-04 13:54:23.707910134 -0500 +++ netcat-openbsd-1.89/netcat.c 2011-01-04 14:12:50.499950473 -0500 @@ -995,6 +995,8 @@ help(void) void usage(int ret) { + fprintf(stderr, "This is nc from the netcat-openbsd package. An alternative nc is available\n"); + fprintf(stderr, "in the netcat-traditional package.\n"); fprintf(stderr, "usage: nc [-46DdhklnrStUuvzC] [-i interval] [-P proxy_username] [-p source_port]\n"); fprintf(stderr, "\t [-s source_ip_address] [-T ToS] [-w timeout] [-X proxy_protocol]\n"); fprintf(stderr, "\t [-x proxy_address[:port]] [hostname] [port[s]]\n");