Chapter 4

Question 1

In what directory are user’s active crontab files stored?

Answer 1

/var/spool/cron

Question 2

Where is the active crontab file for the root user stored?

Answer 2

/var/spool/cron/root

Question 3

Which field of valid line in the system crontab file specifies which user the command should run as?

Answer 3

The sixth field

Question 4

The crond daemon must be restarted after which of the following actions for the action to take effect?

Answer 4

None of the above requires that the crond daemon be restarted.

Question 5

Use the following /etc/cron.d/ file to answer the next 2 questions.

01 * * * * elvis run-parts /etc/crontab
0 1 * * 0 root /usr/sbin/raid-check

Answer 5

-

Question 6

When will the raid-check job execute?

Answer 6

At 1:00 in the morning every Sunday

Question 7

What configuration error is contained in the first relevant line?

Answer 7

The file /etc/crontab is a regular file, not a directory

Question 8

Which of the following commands would instantly stop all cron jobs from executing?

Answer 8

service crond stop

Question 9

What type of files would you expect to find in the /etc/cron.weekly/ directory?

Answer 9

Executable shell scripts

Question 10

What type of files would you expect to find in the /etc/cron.d/ directory?

Answer 10

Text files containing crontab syntax

Question 11

What is the smallest resolution which can be used for specifying the frequency of a cron job?

Answer 11

minutes