Cron Every 4 Hours

Cron Expression

Expression Breakdown

Minute
(0-59)

Hour
(0-23)

Day
(1-31)

Month
(1-12)

Weekday
(0-6)

Field	Value	Meaning
Minute		At minute
Hour		At hour
Day of Month		Day
Month		Month
Day of Week

title: ‘Cron Expression: Cron Every 4 Hours’
description: Learn how to create a cron expression for ‘cron every 4 hours’. Runs
every 4 hours with our free cron generator tool.
keywords: cron every 4 hours, cron expression, cron job, linux cron, unix cron, cron
syntax
cron_expression: 0 */4 * * *
search_keyword: cron every 4 hours
search_volume: 100
search_rank: 13
example_name: cron every 4 hours
permalink: “/tools/cron-generator/examples/cron-every-4-hours/”
related_expressions:

keyword: cron job every 4 hours
url: “/tools/cron-generator/examples/cron-every-4-hours/”
keyword: cron schedule every 4 hours
url: “/tools/cron-generator/examples/cron-schedule-every-4-hours/”
keyword: cron expression for every 4 hours
url: “/tools/cron-generator/examples/cron-expression-for-every-4-hours/”
—
This cron expression represents: cron every 4 hours

Cron Expression

0 */4 * * *

What This Expression Does

Runs every 4 hours

Use Cases

This cron schedule is commonly used for:

System health monitoring
Report generation
Database maintenance
Cache refresh

How to Use

Copy the cron expression above
Open your crontab with crontab -e
Add a new line with: 0 */4 * * * /path/to/your/script.sh
Save and exit

Alternative Formats

With logging: 0 */4 * * * /path/to/script.sh >> /var/log/cron.log 2>&1
With email notification: 0 */4 * * * /path/to/script.sh || mail -s "Cron job failed" admin@example.com