Scan url response have keywords

scan.sh

#!/bin/bash
# fetch the page and using regex to catch keywords. When catch the keywords will save to result.txt

array=(
    "https://www.tmall.com"
)
index=1
echo "Scan start"
for i in "${array[@]}"
do
    echo "${index}/${#array[@]} scaning - ${i}"
    count=$(curl -A "Weex/1.0.0" -v --silent $i 2>&1 | grep -E "hello" | wc -l)
    echo "> ${count}"
    if [ $count -gt 0 ]
    then
        echo "${i}, ${count}" >> result.txt
    fi
    ((index++))
done

echo "Scan finished"