[Solved] Given the crontab entry 0 0 1 */2 *, when will the job run? — Ans: At midnight on the first day of every even month | Linux CLI

Linux CLI - Cron and Scheduling

Given the crontab entry 0 0 1 */2 *, when will the job run?

AAt midnight on the first day of every month

BAt midnight every day in January and February

CAt midnight on the first day of every even month

DAt midnight every two days

Step-by-Step Solution

Solution:

Step 1: Interpret time fields
Minute=0, Hour=0 means midnight.
Step 2: Interpret day and month fields
Day=1 means first day of month; Month=*/2 means every 2 months (even months: Feb, Apr, Jun, etc.).
Final Answer:
At midnight on the first day of every even month -> Option C
Quick Check:
*/2 in month = every 2 months, day=1 = first day [OK]

Quick Trick: */2 in month means every 2 months (even months) [OK]

Common Mistakes:

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