Which command is used to install software packages in a Debian-based system?

The command used to install software packages in a Debian-based system is apt-get. This command is part of the Advanced Package Tool (APT), which is specifically designed for managing packages in Debian and its derivatives like Ubuntu. APT simplifies the process of handling package installations, upgrades, and removals, providing users with a straightforward command-line interface.

When you use apt-get, it accesses the package repositories configured on the system to find the latest version of the software you want to install, along with automatically resolving dependencies, which ensures that all required packages are also installed. This makes package management seamless and efficient for users managing Debian-based systems.

The other commands listed are associated with different package management systems. For example, yum (Yellowdog Updater, Modified) is used primarily in Red Hat-based systems, dnf (Dandified YUM) is the next-generation version of yum also for Red Hat-based distributions, and rpm (Red Hat Package Manager) is a low-level package management tool used for installing and managing packages in those same Red Hat-based systems.