Jailer, you of all people should know this--jls was the command to list jails, particularly in the Warden days. Completely inapplicable to SCALE, of course, which uses Linux and thus doesn't have jails. Google also tells me that that command under Linux can "list the records and entries in a file system journal"--which doesn't seem in any way relevant to anything a user ought to be doing on any flavor of TrueNAS.