nsd-dynipwatch: make grep silent

diff --git a/nsd-dynipwatch b/nsd-dynipwatch
index fd064bbd1b931fd372a617fa9acb7be40f0b7f1f..a002f9576b3f8fa49408fe58af40025801617faf 100755 (executable)
--- a/nsd-dynipwatch
+++ b/nsd-dynipwatch
@@ -52,7 +52,7 @@ function run()
                newip=`cat ${watchfile}`
                echo "`date '+%a %F %T'` :: ${oldip} => ${newip}."
 
-               if ! echo "${newip}" | egrep "^([0-9]+\\.)+[0-9]+$"  ; then
+               if ! echo "${newip}" | egrep -q "^([0-9]+\\.)+[0-9]+$"  ; then
                        echo "Wrong format of new IP address."
                        continue
                fi