Have I been pwned! Script to check your password against https://haveibeenpwned.com/

hibp

#!/usr/bin/env sh
set -e
color_red=$'\e[1;31m'
color_green=$'\e[1;32m'
color_reset=$'\e[0m'

########################### Usage ##############################################
#
# password prompt 'hibp'
# or
# pipe password 'echo $PASSWORD | hibp'
#
################################################################################

if [[ -t 0 ]]; then
  echo -n 'Password:'
  read -s password
  echo -en "\r\033[K"
else
  read -s password
fi

password_sha1="$(echo -n $password | shasum | cut -d' ' -f1 | tr a-z A-Z)"
if (curl -Ns "https://api.pwnedpasswords.com/range/${password_sha1:0:5}" \
    | grep -q "${password_sha1:5}"); then
  echo "${color_red}Oh no — pwned!${color_reset}"
  return 0
else
  echo "${color_green}Good news — no pwnage found!${color_reset}"
  return 1
fi