When you install software from a repository other than your operating system's default, your package manager (like apt on Ubuntu/Debian) will, by default, reject it as "untrusted".
This specific command downloads the belonging to Jamie Cameron, the lead developer of Webmin. Adding this key to your system’s trusted keyring ensures that every package downloaded from the official Webmin repository is authentic and has not been tampered with by a third party. Why You Need This Command wget https //download.webmin.com/jcameron-key.asc
The jcameron-key.asc file contains the digital signature used to sign Webmin packages. When you install software from a repository other
Without this key, your system cannot verify that the software you are downloading is actually the official version from the developers. How to Use the Key in an Installation Why You Need This Command The jcameron-key
The command wget https://download.webmin.com/jcameron-key.asc is a fundamental step for securely installing , a powerful web-based administration tool for Linux and Unix systems.
Simply downloading the key isn't enough; you must also tell your system to trust it. Below is the typical sequence for a Debian or Ubuntu system: Installing Webmin on ubuntu? - Ask Ubuntu