[Solved] You added this line in crontab -e:30 24 * * * /home/user/script.shWhy will this cron job not run as expected? | Linux CLI

Linux CLI - Cron and Scheduling

You added this line in crontab -e:
30 24 * * * /home/user/script.sh
Why will this cron job not run as expected?

AThe day of week field '*' is invalid; it must be a number 1-7.

BThe minute field '30' is invalid; valid values are 0-29.

CThe command path is incorrect; it must be an absolute path.

DThe hour field '24' is invalid; valid values are 0-23.

Step-by-Step Solution

Solution:

Step 1: Analyze the cron time fields
The cron format is minute hour day month day_of_week command.
Step 2: Check the hour field
The hour field is set to 24, but valid hour values range from 0 to 23.
Step 3: Conclusion
Because '24' is invalid, the cron job will not run.
Final Answer:
The hour field '24' is invalid; valid values are 0-23. -> Option D
Quick Check:
Hour must be 0-23, not 24 [OK]

Quick Trick: Cron hour field max is 23, not 24 [OK]

Common Mistakes:

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