如何才能在Qmail系统下实现删除定期不使用的帐户?

vdeloldusers: usage: [options]

options: -a age_in_days (will delete accounts older than this date)

(default is 6 months or 180 days)

-v (print version number and exit)

-d [domain] (process only [domain])

-e (process every domain)

-D (actually delete users. no users are deleted without this option)

-V (verbose -- print old users that will be deleted),