--- rc.wireless.orig	2009-03-31 18:05:10.000000000 +0100
+++ rc.wireless.new	2009-03-31 18:05:26.000000000 +0100
@@ -82,7 +82,7 @@
     #LC_ALL=C $IWPATH/iwconfig $1 2>&1 | \
     #    grep -Eiq "no wireless extensions|no such device" || return 0
     #return 1
-    if ! grep `echo ${1}: | cut -f 1 -d :`: /proc/net/wireless 1> /dev/null ; then
+    if ! grep -q `echo ${1}: | cut -f 1 -d :`: /proc/net/wireless > /dev/null 2>&1 ; then
       # no wireless interface
       return 1
     else