Find out how many times your password has been pwned

pwnedpasswordcount.sh

#!/bin/bash

# set pw to the password you want to lookup (of course, be careful with writing this to your shell history or unencrypted disk!)
pw="insecure"

# this will output the number of times it has been pwned
s=$(echo -n $pw | openssl sha1 | tr '[a-z]' '[A-Z]'); curl -s "https://api.pwnedpasswords.com/range/${s:0:5}" | grep "${s:5}" | cut -d ":" -f 2

Read more here: https://www.troyhunt.com/ive-just-launched-pwned-passwords-version-2/