Linux CLI - Cron and Scheduling
How would you schedule a cron job to run every 15 minutes only between 8 AM and 10 AM daily?
How would you schedule a cron job to run every 15 minutes only between 8 AM and 10 AM daily?
hard📝 Application Q9 of 15
Step-by-Step Solution
Solution:
Step 1: Understand minute and hour fields
*/15 in minute means every 15 minutes; 8-10 in hour means hours 8,9,10.Step 2: Verify the schedule matches requirement
*/15 8-10 * * * /usr/bin/fifteen_min_task.sh runs every 15 minutes during hours 8, 9, and 10 daily.Final Answer:
*/15 8-10 * * * /usr/bin/fifteen_min_task.sh -> Option CQuick Check:
Minute '*/15' and hour '8-10' for correct timing [OK]
Quick Trick: Use '*/15' for every 15 minutes and hour range for time window [OK]
Common Mistakes:
- Placing '*/15' in hour field
- Misusing slash in hour field
- Confusing day and hour fields
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