Cron <root at warden> /usr/local/sbin/iocage snapshot pmwiki.autonlab.org

[root]

[: ==: unexpected operator
cannot open '': invalid dataset name
usage:
	snapshot|snap [-r] [-o property=value] ... <filesystem|volume>@<snap> ...

For the property list, run: zfs set|get

For the delegated permission list, run: zfs allow|unallow