To prevent a specific user from scheduling tasks with at, what should the administrator do? A. Add the specific user to /etc/at.allow file. B. Add the specific user to [deny] section in the /etc/atd....

Each entry in a crontab must end with what character? A. Tab B. Space C. Backslash D. Newline

Which environment variable should be set in order to change the time zone for the commands run from within the environment variable's scope? (Specify the variable name only.)

Which file contains the date of the last change of a user's password? A. /etc/gshadow B. /etc/passwd C. /etc/pwdlog D. /etc/shadow E. /var/log/shadow

Where are user specific crontabs stored? A. In the database file /etc/crontab.db which is shared by all users. B. As individual per-user files within /var/spool/cron. C. As individual per-user files ...

Which of the following commands can remove a user from a group? A. grouprm B. groupmod C. passwd D. usergroups E. usermod

In case neither cron.allow nor cron.deny exist in /etc/, which of the following is true? A. Without additional configuration, no users may have user specific crontabs. B. Without additional configura...

What is the purpose of the iconv command?

Which command can be used to delete a group from a Linux system? A. groupdel B. groupmod C. groups D. groupedit

Which of the following fields are available in both the global /etc/crontab file as well as in user-specific crontab files? (Select TWO correct answers)