chrome_extensions_lookup.sh

# list.txt contains Google Chrome extension id per line
for line in $(cat chrome_extensions.txt | sed '/^$/d' | tr -s " ")
do
        cnt=`curl -s -I https://chrome.google.com/webstore/detail/${line} | grep 'HTTP/2 301' | wc -l`
        if [ "$cnt" -ne 1 ]; then
               out+="https://chrome.google.com/webstore/detail/${line}
"
        fi
done

if [ "${out}" ]; then
        echo "$out" | mutt -s "Chrome Extensions monitoring" {YOUR_EMAIL}
fi