From 65c96d6d8cfe069f2c311dc168cf245428452990 Mon Sep 17 00:00:00 2001
From: john30 <ebusd@ebusd.eu>
Date: Sun, 14 Feb 2021 16:48:47 +0100
Subject: [PATCH] adjust to newer netcat versions

---
 contrib/scripts/readallvaillantregisters.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/contrib/scripts/readallvaillantregisters.sh b/contrib/scripts/readallvaillantregisters.sh
index cdd6dc477..b422b9ea8 100755
--- a/contrib/scripts/readallvaillantregisters.sh
+++ b/contrib/scripts/readallvaillantregisters.sh
@@ -13,6 +13,6 @@ if [ "x$1" = "x-a" ]; then
 fi
 for (( i=0; i<512; i++ )) ; do
   h=`printf "%4.4X" $i`
-  ret=`echo "hex ${addr}b509030d${h##??}${h%%??}"|nc localhost $port|head -n 1`
+  ret=`echo "hex ${addr}b509030d${h##??}${h%%??}"|nc -q 1 localhost $port|head -n 1`
   echo $i "=" $ret
 done