o "at" rustic command

                                                                                
        at, atq, atrm - queue, examine or delete jobs for                       
        later execution.                              


	See also at -h.
                                                                                
Usage:                                                                          
        at [DD] [HH:MM:SS]      # read command form stdin                       
                                # [date in current month]                     
        atq                     # queue list                                    
        atrm job                # remove "job" from  queue
                                                                                
Example 1:                                                                        
        echo 'ppp-on &' | at 18 22:30   

Example 2:

	at 15:23 << END
	init 6	# shutdown
	END 

