Cron Configuration Examples
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27.02.2023, 16:01
Cron setup is a way to automate tasks on a Linux or Unix operating system. Cron allows users to schedule scripts and commands to run at a certain time or with a certain frequency.
Why do I need Cron settings?
This can be useful when you need to perform repetitive tasks on a regular basis, such as backing up data, sending reports by email, updating software, or clearing temporary files.
Cron setup can also simplify system administration, reduce CPU load, and improve overall performance.
The setup can help prevent data loss or system downtime, as tasks will be performed automatically according to a set schedule. This reduces the risk of errors associated with performing tasks manually.
In general, this procedure significantly simplifies the life of a system administrator and improves system performance.
Configuring Cron on Linux
A few examples of cron settings.
1. Running the script every day at 12:30:
30 12 * * * /path/to/script.sh
2. Execute the script every minute:
* * * * * /usr/bin/php /var/www/html/script.php
3. Run the script every day at 3 a.m.:
03 * * * /usr/bin/php /var/www/html/script.php
4. Run the script every Saturday at 5 p.m.:
0 17 * * 6 /usr/bin/php /var/www/html/script.php
5. Execute the script every 1st day of every month at midnight:
001 * * /usr/bin/php /var/www/html/script.php
6. Run the script every 30 minutes:
*/30 * * * * /usr/bin/php /var/www/html/script.php
7. Run the script every day at 3 a.m. and 3 p.m.:
0 3,15 * * * /usr/bin/php /var/www/html/script.php
Note: in these examples, /usr/bin/php is the path to the PHP interpreter, and /var/www/html/script.php - this is the path to the script file to be executed. You can replace them with the corresponding file paths on your server.
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