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There is a CentOS 7 machine and a BASH script in it.

This script is being executed either by Cron scheduler or manually when I log on to the server via SSH.

I would like to trigger script execution also by sending a POST request to a web server on the same machine (without having to log on). How to do this the right way?

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There are many ways to do this. Common gateway Interface (CGI) is one. Here is a simple guide that shows you to execute a Bash script, as well as other languages, through the browser.

Some languages allow you to directly call the OS to run a program or script. For example PHP has exec().

Just a note: While executing local scripts and commands from a browser is not uncommon, there are always risks involved. Make sure you limit access to the webpage as needed, as web based access to the OS has risks.

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    Thank you. I would like only to trigger script executiion per web. No one intends that the web server should actually run the script as a child process. This script is harmless. If there is nothing to do, it does nothing.
    – Paul
    Jun 9, 2021 at 17:33

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