nss-passwords [-d <dir>] [-p <pinentry>] query [...]
A query is either hostname:string, username:string, or string (which
translates to hostname:string).
  -d profile  directory (default: Firefox default profile)
  -p pinentry program to use (default: pinentry)
  -j          output result in JSON
  -help       Display this list of options
  --help      Display this list of options