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Linux Cron Cheatsheet: Schedule and Manage Cron Jobs for DevOps

Introduction

This cheatsheet provides examples of managing cron jobs on Linux, including scheduling, editing, and troubleshooting automated tasks.

Table of Contents

• Linux Cron Cheatsheet: Schedule and Manage Cron Jobs for DevOps
  • Introduction
  • Table of Contents
    • 1. View Current Cron Jobs
    • 2. Edit Crontab
    • 3. Cron Job Format
    • 4. Schedule a Job to Run Every Minute
    • 5. Schedule a Job Daily
    • 6. Schedule a Job Weekly
    • 7. Schedule a Job Monthly
    • 8. Run a Job at a Specific Time
    • 9. List System Cron Jobs
    • 10. Log Cron Output

1. View Current Cron Jobs

crontab -l

2. Edit Crontab

crontab -e

3. Cron Job Format

# m h dom mon dow command

4. Schedule a Job to Run Every Minute

* * * * * /path/to/script.sh

5. Schedule a Job Daily

0 2 * * * /path/to/daily-backup.sh

6. Schedule a Job Weekly

0 3 * * 0 /path/to/weekly-report.sh

7. Schedule a Job Monthly

0 4 1 * * /path/to/monthly-cleanup.sh

8. Run a Job at a Specific Time

30 5 15 6 * /path/to/special-task.sh

9. List System Cron Jobs

sudo cat /etc/crontab

10. Log Cron Output

* * * * * /path/to/script.sh >> /var/log/cron.log 2>&1