speed up create_ipset up to 1.5 times by sed

ipset/create_ipset.sh

@@ -14,9 +14,9 @@ do
  [ -f "$f" ] && {
   echo Adding to ipset $1 : $f
   if [ -f "$ZIPLIST_EXCLUDE" ] ; then
-   grep -vxFf $ZIPLIST_EXCLUDE "$f" | sort -u | while read ip; do echo add $1 $ip; done | ipset -! restore
+   grep -vxFf $ZIPLIST_EXCLUDE "$f" | sort -u | sed -nre "s/^(.*)$/add $1 \1/p" | ipset -! restore
   else
-   sort -u "$f" | while read ip; do echo add $1 $ip; done | ipset -! restore
+   sort -u "$f" | sed -nre "s/^(.*)$/add $1 \1/p" | ipset -! restore
   fi
  }
 done