DetectPackageManager detects the package manager available in the current system.

LookupCommand tries to find command and returns its path if found.

Apt represents "apt" package manager.

Dnf represents "dnf" package manager.

UnknownPackageManager represents unknown package manager.

Yum represents "yum" package manager.

ErrCouldNotDetectPackageManager is returned when package manager cannot be detected.

PackageManager represents a specific package manager used by the system.