diff -up expect5.45/example/passmass.orig expect5.45/example/passmass

--- expect5.45/example/passmass.orig	2011-07-27 16:09:31.013843393 +0200

+++ expect5.45/example/passmass	2011-07-27 16:10:55.667843578 +0200

@@ -107,6 +107,10 @@ for {set i 0} {$i<$argc} {incr i} {

 	set login "ssh"

 	continue

     } "-telnet" {

+	if {[file executable /usr/bin/telnet] == 0} {

+		send_user "It seems that telnet is not installed. Please install telnet in order to use the script with this option.\n"

+		exit 1

+	}

 	set login "telnet"

 	continue

     } "-program" {

diff -up expect5.45/example/weather.orig expect5.45/example/weather

--- expect5.45/example/weather.orig	2011-07-27 15:49:57.878843862 +0200

+++ expect5.45/example/weather	2011-07-27 16:08:48.067843491 +0200

@@ -33,6 +33,11 @@ set timeout 60

 set env(TERM) vt100	;# actual value doesn't matter, just has to be set

+if {[file executable /usr/bin/telnet] == 0} {

+	send_user "It seems that telnet is not installed. Please install telnet in order to use this script.\n"

+	exit 1

+}

+

 spawn telnet rainmaker.wunderground.com 3000

 while {1} {

 	expect timeout {