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