Cron Schedule Reference

Cron: Weekly on Friday at 5 PM

Run a cron job every Friday at 5 PM. End-of-week reporting.

0 17 * * 5
Weekly on Friday at 5 PM

Expression Breakdown

0
Minute
0
17
Hour
17
*
Day
Every day
*
Month
Every month
5
Weekday
5

Usage in Crontab

Add this line to your crontab (crontab -e):

# Weekly on Friday at 5 PM 0 17 * * 5 /path/to/your/script.sh

With CronPing Monitoring

Add a curl ping to get alerted if your job fails or runs late:

# Weekly on Friday at 5 PM — with CronPing dead man's switch 0 17 * * 5 /path/to/your/script.sh && curl -s https://cronping.anethoth.com/ping/YOUR_TOKEN

Common Use Cases

Database Backups
Automate pg_dump or mysqldump on this schedule
Cache Warming
Pre-compute expensive queries or API responses
Report Generation
Generate and email analytics reports
Health Checks
Ping endpoints and check service availability

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Frequently Asked Questions

What does 0 17 * * 5 mean in cron?

Run a cron job every Friday at 5 PM. End-of-week reporting. This expression follows the standard 5-field cron syntax: minute, hour, day-of-month, month, day-of-week.

How do I add this to my crontab?

Run crontab -e in your terminal and add: 0 17 * * 5 /path/to/your/command. Save and exit. Use crontab -l to verify.

How do I know if my cron job actually ran?

Check /var/log/syslog or /var/log/cron for execution logs. For reliable monitoring, use CronPing — it alerts you when a job misses its expected schedule.

What timezone does cron use?

Cron uses the system timezone by default. Check with timedatectl or set TZ=UTC in your crontab for consistency across servers.

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