dpkg
dpkg is a low-level package manager for Debian-based Linux distributions, such as Debian, Ubuntu, and their derivatives. It handles the installation, removal, and management of .deb package files, including dependency resolution and configuration. It serves as the backend for higher-level package management tools like APT (Advanced Package Tool).
Developers should learn dpkg when working with Debian-based systems for direct package manipulation, such as installing local .deb files, troubleshooting package issues, or automating deployments. It is essential for system administrators and DevOps engineers managing Linux servers, as it provides fine-grained control over software packages, enabling tasks like querying package information, verifying installations, and handling dependencies manually.