Schedule Task

Schedule and run recurring tasks on Linux/Unix systems. Use when user wants to set up cron jobs, scheduled backups, periodic data sync, automated reports, or any recurring task automation.

Schedule and manage recurring tasks using cron.

Quick Start

bash

# Add a scheduled task
python scripts/scheduler.py add --cron "0 9 * * *" --command "backup.sh"

# List all tasks
python scripts/scheduler.py list

# Remove a task
python scripts/scheduler.py remove --id 1

Core Features

• Cron Expression Parser: Validate and understand cron expressions
• Task Management: Add, list, remove scheduled tasks
• Health Checks: Monitor task execution status
• Notifications: Alert on task failure

Cron Format

text

┌───────────── minute (0 - 59)
│ ┌───────────── hour (0 - 23)
│ │ ┌───────────── day of month (1 - 31)
│ │ │ ┌───────────── month (1 - 12)
│ │ │ │ ┌───────────── day of week (0 - 6)
│ │ │ │ │
* * * * *

Common Examples

Expression	Meaning
0 9 * * *	Daily at 9 AM
0 * * * *	Every hour
*/15 * * * *	Every 15 minutes
0 0 * * 0	Weekly on Sunday
0 0 1 * *	Monthly on 1st

Script Usage

bash

python scripts/scheduler.py [COMMAND] [OPTIONS]

Commands:
  add         Add a new scheduled task
  list        List all scheduled tasks
  remove      Remove a task
  enable      Enable a disabled task
  disable     Disable a task without removing
  log         Show task execution log
  health      Check task health status

Options

text

--cron TEXT      Cron expression (required for add)
--command TEXT   Command to run (required for add)
--name TEXT      Task name for identification
--log PATH       Log file path
--notify EMAIL   Email notification on failure
--timeout SECS   Task timeout in seconds

Examples

Daily Backup

bash

python scripts/scheduler.py add \
  --cron "0 2 * * *" \
  --command "/home/user/backup.sh" \
  --name "daily-backup" \
  --log /var/log/backup.log

Hourly Sync

bash

python scripts/scheduler.py add \
  --cron "0 * * *" \
  --command "sync-data.sh" \
  --name "hourly-sync"

Weekly Report

bash

python scripts/scheduler.py add \
  --cron "0 9 * * 1" \
  --command "generate-report.sh" \
  --name "weekly-report"

Integration

With Web Monitor

bash

# Monitor website every hour
python scripts/scheduler.py add \
  --cron "0 * * *" \
  --command "python /path/to/web-monitor/scripts/monitor.py --url https://example.com --compare last.json"

With Telegram Bot

bash

# Send daily summary
python scripts/scheduler.py add \
  --cron "0 8 * * *" \
  --command "telegram-send 'Good morning! Daily summary ready'"

Best Practices

1. Use absolute paths in commands
2. Log output for debugging
3. Set timeouts to prevent hanging tasks
4. Test commands manually before scheduling
5. Use UTC for server schedules