`psl' explores the Public Suffix List

Usage: psl [options] <domains...>

Options:
  --version                    show library version information
  --use-latest-data            use the latest PSL data available [default]
  --use-builtin-data           use the builtin PSL data
  --no-star-rule               do not apply the prevailing star rule
                                 (only applies to --is-public-suffix)
  --load-psl-file <filename>   load PSL data from file
  --is-public-suffix           check if domains are public suffixes [default]
  --is-cookie-domain-acceptable <cookie-domain>
                               check if cookie-domain is acceptable for domains
  --print-unreg-domain         print the longest public suffix part
  --print-reg-domain           print the shortest private suffix part
  --print-info                 print info about library builtin data
  -b,  --batch                 don't print leading domain