/usr/bin/expiry

[Radovan Garabik <garabik@melkor.dnp.fmph.uniba.sk>]

what does /usr/bin/expiry do?
manual page is not really heplful, command is setgid root (huh?)
I assume it should be setgid shadow, because it might want
to read /etc/shadow

-- 
 -----------------------------------------------------------
| Radovan Garabik http://melkor.dnp.fmph.uniba.sk/~garabik/ |
| __..--^^^--..__    garabik @ melkor.dnp.fmph.uniba.sk     |
 -----------------------------------------------------------
Antivirus alert: file .signature infected by signature virus.
Hi! I'm a signature virus! Copy me into your signature file to help me spread!