Which of the following files assigns a user to its primary group?

Which of the following crontab entries will execute myscript at 30 minutes past every hour on Sundays?

To prevent a specific user from scheduling tasks with at, what should the administrator do?

Each entry in a crontab must end with what character?

Which file contains the date of the last change of a user’s password?

Where are user specific crontabs stored?

Which of the following commands can remove a user from a group?

In case neither cron.allow nor cron.deny exist in /etc/, which of the following is true?

What is the purpose of the iconv command?

Which command can be used to delete a group from a Linux system?