Exam 102-500 Topic 1 Question 66 Discussion

Actual exam question for Lpi's 102-500 exam
Question #: 66
Topic #: 1
Which file specifies the user accounts that can NOT submit jobs via at or batch? (Provide the full path and filename)

Suggested Answer:

/etc/at.deny
Explanation:
The /etc/at.deny file specifies the user accounts that can NOT submit jobs via at or batch. The format of the file is a list of usernames, one on each line. Whitespace is not permitted. The superuser may always use at. If the file /etc/at.allow exists, only usernames mentioned in it are allowed to use at. If /etc/at.allow does not exist,
/etc/at.deny is checked12. The at and batch commands use the files /usr/lib/cron/at.allow and
/usr/lib/cron/at.deny to restrict usage on some systems3. References:
* at.allow(5) - Linux man page
* at.deny(5) [linux man page] - The UNIX and Linux Forums
* The at.allow and at.deny files - IBM

by Jeremy at Nov 21, 2025, 08:26 AM

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