fix replacing dynUpdateUrl parameter

home.admin/config.scripts/internet.dyndomain.sh

@@ -94,8 +94,11 @@ if [ "$1" = "1" ] || [ "$1" = "on" ]; then
 
   # setting dynUpdateUrl is a bit cpmplicated because value can contain chars that break sed replacement
   # so first remove dynUpdateUrl from config and then add fresh as new line at the end
-  grep -v "dynUpdateUrl" /mnt/hdd/raspiblitz.conf > /mnt/hdd/raspiblitz.conf
-  echo "dynUpdateUrl='${dynUpdateUrl}'" >> ${configFile}
+  grep -v "dynUpdateUrl" /mnt/hdd/raspiblitz.conf > /mnt/hdd/raspiblitz.conf.new
+  echo "dynUpdateUrl='${dynUpdateUrl}'" >> /mnt/hdd/raspiblitz.conf.new
+  sudo rm /mnt/hdd/raspiblitz.conf
+  sudo mv /mnt/hdd/raspiblitz.conf.new /mnt/hdd/raspiblitz.conf
+  sudo chmod 777 /mnt/hdd/raspiblitz.conf
   #sudo sed -i "s/^dynUpdateUrl=.*/dynUpdateUrl='${dynUpdateUrl}'/g" /mnt/hdd/raspiblitz.conf
 
   echo "changing lnd.conf"