List the current user's at task list
atq command displays the list of tasks to be executed in the system, that is, lists the at task list of the current user.
atq [-V] [-q queue] [-v]
-V: Display version number;
-q: Query the tasks of the specified queue.
at now + 10 minutes
at> echo 1111
at> <eot>
job 3 at Fri Apr 26 12:56:00 2013
atq
3 Fri Apr 26 12:56:00 2013 a root