Linux CLI - Cron and Scheduling
What does the cron expression
0 0 * * * do?What does the cron expression 0 0 * * * do?
easy📝 Conceptual Q11 of 15
Step-by-Step Solution
Solution:
Step 1: Understand the cron fields
The expression has five fields: minute=0, hour=0, day=*, month=*, weekday=*. This means minute 0, hour 0, every day, every month, every weekday.Step 2: Interpret the schedule
Since minute and hour are fixed at 0, and others are '*', the task runs once daily at 00:00 (midnight).Final Answer:
Runs a task every day at midnight -> Option CQuick Check:
0 0 * * * = daily at midnight [OK]
Quick Trick: Minute and hour 0 means daily at midnight [OK]
Common Mistakes:
- Thinking * means no schedule
- Confusing hour and minute fields
- Assuming it runs every minute
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