Comment by moul

  $ nopassword() { echo -n "MYSEED-${1}" | openssl md5 }
  $ nopassword github
  9afe72783eaa2d065adb5f891a427147
  $ nopassword facebook
  8a6933c915ea2b48349f5c5955f9ade0
  $ nopassword github
  9afe72783eaa2d065adb5f891a427147