perl -MDate::Manip -E"say $Date::Manip::VERSION"
6.25

perl -MDate::Manip=UnixDate -E"say UnixDate('today','%Y-%m-%d-%H-%M-%S')"
2011-09-30-00-00-00

perl -MDate::Manip=UnixDate -E"say UnixDate('now','%Y-%m-%d-%H-%M-%S')"
2011-09-30-02-50-27