Question

To remove a job from the queue, which option is used with at command?

(a) -r

(b) -l

(c) -e

(d) -t

This question was posed to me by my college director while I was bunking the class.

My question is taken from Process Management topic in chapter The Process of Unix

Answer 1

The correct option is (a) -r

To explain I would say: Jobs can be listed using -l option with at command and can be removed using -r option. All we have to do is to provide the job number (of the job which we want to remove from the queue) as an argument to at command along with -r option. For example,