[Solved] After adding this line in crontab -e:0 0 * * 0 /home/user/backup.shWhat will happen? — Ans: The script runs every Sunday at midnight. | Linux CLI

Linux CLI - Cron and Scheduling

After adding this line in crontab -e:
0 0 * * 0 /home/user/backup.sh
What will happen?

AThe script runs every day at midnight.

BThe script runs every Sunday at midnight.

CThe script runs every hour on Sundays.

DThe script runs once a month at midnight.

Step-by-Step Solution

Solution:

Step 1: Decode the cron schedule
Fields: minute=0, hour=0, day-of-month=*, month=*, day-of-week=0. Day-of-week 0 means Sunday.
Step 2: Interpret the schedule
The script runs at 00:00 (midnight) on every Sunday.
Final Answer:
The script runs every Sunday at midnight. -> Option B
Quick Check:
0 0 * * 0 = Sunday midnight [OK]

Quick Trick: Day-of-week 0 means Sunday in cron [OK]

Common Mistakes:

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