Each entry in a crontab must end with what character?

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

View Answer

Answer: D

Explanation:

Each entry in a crontab file consists of six fields, specifying in the following order: minute, hour, day, month, weekday, and command1. Any of these fields can be set to an asterisk (*), which stands for “first through last.” So, for example, to run a job every hour, put * in the hour field1. Each entry in a crontab file must end with a newline character (n), which indicates the end of a line2. A newline character is created by pressing the Enter key on the keyboard. The other options are not valid characters for ending a crontab entry. A tab or a space is used to separate each field, and a backslash is used to escape special characters or continue a long command to the next line2.

Reference: How to Use the Cron Job Format to Schedule Task in Linux Syntax of crontab File Entries – Oracle.