Crontab Generator

Interactively build and generate 5-field Unix crontab expressions (`* * * * *`). Provides interactive GUI pickers for minute, hour, day of month, month, and day of week, displaying instant plain-English schedule descriptions.

Why Use This Tool?

• Linux Cron Job Scheduling: Build precise cron schedule syntax for automated server backups, database maintenance scripts, and log rotation.
• Prevent Syntax Errors: Avoid misconfiguring cron jobs that run too frequently or at unintended hours.
• Copy-Paste Crontab Commands: Generate ready-to-paste crontab lines including command path (`/usr/bin/python3 script.py`).

How to Use

1. Pick execution frequency (e.g. Every Minute, Hourly, Daily at 2 AM, Weekly on Sunday).
2. Or select custom minute, hour, day, and month values in the GUI grid.
3. Copy generated cron expression (e.g. `0 2 * * 0`) and plain-English schedule.

Real Working Example

Input:

Selection: Every Sunday at 2:30 AM | Command: /usr/local/bin/backup.sh

Output Result:

Cron Expression: 30 2 * * 0
Schedule Description: "At 02:30 AM, only on Sunday"
Crontab Line: 30 2 * * 0 /usr/local/bin/backup.sh > /dev/null 2>&1

Important Technical Details & Specifications

• Standard 5-Field Cron Syntax: Supports Minute (0-59), Hour (0-23), Day of Month (1-31), Month (1-12), Day of Week (0-6).
• Special Syntax Support: Generates wildcards (`*`), steps (`*/5`), ranges (`1-5`), and lists (`1,15,30`).
• Client-Side Engine: Fast in-browser cron expression generation.

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