[Solved] Why does this cron job fail to run? 0 25 * * * /usr/bin/script.sh — Ans: Hour field 25 is invalid; valid range is 0-23 | Linux CLI

Linux CLI - Cron and Scheduling

Why does this cron job fail to run? 0 25 * * * /usr/bin/script.sh

AHour field 25 is invalid; valid range is 0-23

BMinute field 0 is invalid; must be 1-59

CCommand path must not contain /usr/bin/

DCron jobs cannot run scripts with .sh extension

Step-by-Step Solution

Solution:

Step 1: Validate the hour field
Hour must be between 0 and 23; 25 is invalid.
Step 2: Check other fields
Minute 0 is valid, command path is valid, script extension allowed.
Final Answer:
Hour field 25 is invalid; valid range is 0-23 -> Option A
Quick Check:
Hour range 0-23 only [OK]

Quick Trick: Hour must be 0-23; 25 causes failure [OK]

Common Mistakes:

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Why does this cron job fail to run? 0 25 * * * /usr/bin/script.sh