If no command is specified, the -l (list) option will list the allowed (and forbidden)
commands for the invoking user (or the user specified by the -U option) on the current host.
If a command is specified and is permitted by the security policy, the fully-qualified path
to the command is displayed along with any command line arguments. If command is specified
but not allowed, sudo will exit with a status value of 1. If the -l option is specified with
an l argument (i.e. -ll), or if -l is specified multiple times, a longer list format is used.