at

Question 1

at

Answer 1

Used to schedule one or more commands to be executed at one specific time in the future.

Question 2

at

• q
• m
• f
• l
• d
• v
• c
• t

Answer 2

• q queue, Uses the specified queue. Queues can be assigned letters, the lower the letter to A, the lower the niceness.
• m, Send mail to the user when the job has finished.
• f file, Reads job from file.
• l, Alias for atq.
• d, Alias for atrm.
• v, Shows the time the job will be executed.
• c, cats the job listed on the command to stdout.
• t time_arg, Submit the job to be run at the time specified. ([[CC]YY]MMDDhhmm)