A Linux administrator needs to schedule a system backup script /usr/local/bin/backup.sh to run every night at 1:30 a.m. Which of the following entries should the administrator add to system crontab…

The correct answer is C. 30 1 * * * /usr/local/bin/backup.sh. The crontab schedule format is minute hour day-of-month month day-of-week. To run at 1:30 AM every day, you specify 30 for minutes and 1 for hours: 30 1 * /usr/local/bin/backup.sh

System Management

Question

A Linux administrator needs to schedule a system backup script /usr/local/bin/backup.sh to run every night at 1:30 a.m. Which of the following entries should the administrator add to system crontab to achieve the goal?

Options

A1:30 * * * /usr/local/bin/backup.sh
B1 30 * * * /usr/local/bin/backup.sh
C30 1 * * * /usr/local/bin/backup.sh
D
- - - 1 30 /usr/local/bin/backup.sh

How the community answered

(29 responses)

A
3% (1)
B
7% (2)
C
90% (26)

Explanation

The crontab schedule format is minute hour day-of-month month day-of-week. To run at 1:30 AM every day, you specify 30 for minutes and 1 for hours: 30 1 * * * /usr/local/bin/backup.sh

Topics

#Cron#Job Scheduling#Linux Commands#System Administration

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