[Solved] Why does the cron expression 0 0 * * 1 run only once a week? — Ans: Because day of week is set to 1, which means Monday only | Linux CLI

Linux CLI - Cron and Scheduling

Why does the cron expression 0 0 * * 1 run only once a week?

ABecause hour and minute are zero, limiting runs to midnight

BBecause day of week is set to 1, which means Monday only

CBecause day of month is *, so it runs daily

DBecause month is *, so it runs every month

Step-by-Step Solution

Solution:

Step 1: Analyze day of week field
Day of week=1 means Monday only.
Step 2: Understand hour and minute
Hour=0 and minute=0 means midnight time.
Step 3: Explain frequency
Since day of week restricts to Monday, job runs once per week at midnight.
Final Answer:
Because day of week is set to 1, which means Monday only -> Option B
Quick Check:
Day of week limits frequency to once weekly [OK]

Quick Trick: Day of week field controls weekly frequency [OK]

Common Mistakes:

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Why does the cron expression 0 0 * * 1 run only once a week?