[Solved] Given this timer unit file snippet:[Timer] OnCalendar=*-*-* 12:00:00 Persistent=true What does the Persistent=true setting do? | Linux CLI

Linux CLI - Cron and Scheduling

Given this timer unit file snippet:

[Timer]
OnCalendar=*-*-* 12:00:00
Persistent=true

What does the Persistent=true setting do?

APrevents the timer from running at boot

BRuns the timer only once

CDisables the timer after one run

DRuns missed jobs immediately after boot

Step-by-Step Solution

Solution:

Step 1: Understand Persistent=true meaning
This setting makes systemd run any missed timer jobs immediately after the system boots.
Step 2: Eliminate other options
It does not limit runs to once, disable timers, or prevent running at boot.
Final Answer:
Runs missed jobs immediately after boot -> Option D
Quick Check:
Persistent=true = catch missed runs after reboot [OK]

Quick Trick: Persistent=true runs missed tasks after reboot [OK]

Common Mistakes:

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