An operator notices that a job on the system is causing poor performance. The job is a root process and the administrator has concluded it is not important and can be stopped. Shortly after stopping the process, it starts again. Which of the following commands will list repeating scheduled tasks?（）
- A、at -l
- B、jobs -l
- C、sched -l
- D、crontab -l
正确答案:D
答案解析:有
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