T
Hndy Tools

Crontab Generator

Generate cron expressions for scheduling tasks

Cron
Scheduler
Linux
Unix

Common Presets

Quick start with popular cron schedules

Configure schedule timing

Minutes

Hours

Days of Month

Months

Days of Week

Command To Execute

Command Examples:

Backup a folder: tar -czf /backup/$(date +\%F).tar.gz /home/user/data

Run a Node.js script: /usr/bin/node /home/user/app/script.js

Sync files with rsync: rsync -av /src/dir/ /dest/dir/

Send a test email: echo "Cron test" | mail -s "Test" user@example.com

Clean /tmp directory: find /tmp -type f -mtime +7 -delete

How to Handle Execution Output

Save output to file:
Send output to Email:

About Crontab

Cron is a time-based job scheduler in Unix-like operating systems. The crontab format consists of five fields:

* * * * *
│ │ │ │ │
│ │ │ │ └─── Day of Week (0-7, Sunday=0 or 7)
│ │ │ └───── Month (1-12)
│ │ └─────── Day of Month (1-31)
│ └───────── Hour (0-23)
└─────────── Minute (0-59)

Special Characters:

  • * - Any value
  • , - Value list separator (e.g., 1,3,5)
  • - - Range of values (e.g., 1-5)
  • / - Step values (e.g., */2 = every 2)

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