What method is utilized for automating unattended installations of Linux systems?

Anaconda Kickstart is a powerful method designed specifically for automating unattended installations of Linux systems, particularly within distributions like Red Hat, Fedora, and CentOS. It allows system administrators to create predefined installation scripts that specify configurations, package selections, and system settings, enabling automated deployments without user intervention.

Using Kickstart, installation parameters can be written into a single file (the Kickstart file), which can then be referenced during the installation process. This significantly streamlines the setup process, particularly in environments where multiple systems need to be deployed quickly and with uniform configurations.

In contrast, while the other options also relate to system installations, they serve different purposes or are used in different contexts. Preseed is a similar automated installation approach but primarily for Debian-based distributions. Netboot refers to a method of booting a computer from a network instead of from local storage, which can facilitate installations but isn’t specifically for unattended installations. Image Builder is a utility that assists in creating OS images but isn't inherently an installation automation tool like Kickstart.