To verify that you have created an at job, use the atq command. In the following example, the atq command confirms that the at jobs that belong to jones have been submitted to the queue.
$ atq Rank Execution Date Owner Job Queue Job Name 1st Jul 12, 2004 19:30 jones 897355800.a a stdin 2nd Jul 14, 2004 23:45 jones 897543900.a a stdin 3rd Jul 17, 2004 04:00 jones 897732000.a a stdin