Bash DNS resolution timer

gistfile1.txt

#!/bin/bash

#Sleep interval
S=$1

#filename suffix
suffix="s.log"

while(true)
do
    line=`date +"%m-%d-%y %H:%M:%S"`
    out=`dig somehost.com | grep Query | gawk -F' ' '{print $4}'`
    filename=dnstiming-`date +"%m-%d-%y"`-$S
    filename="$filename$suffix"
    
    echo $line $out >> $filename
    sleep $S
done