How does the 'apt upgrade' command differ from 'apt dist-upgrade'?

The command 'apt upgrade' is designed to upgrade all installed packages to their latest versions without changing the system's overall distribution. Its focus is primarily on enhancing existing packages while keeping them at the same release level. This means that while 'apt upgrade' will install available package updates, it will not handle situations where dependencies require new packages to be installed or existing ones to be removed to satisfy new dependencies.

On the other hand, 'apt dist-upgrade' takes a broader approach to package management. In addition to upgrading all currently installed packages to their latest versions, it is capable of managing changes in dependencies, which might necessitate the addition or removal of packages. This command is particularly useful when upgrading to a new version of the operating system or when significant changes between versions might affect the installed dependencies or overall package structure.

Thus, the distinction lies in the full package management capabilities of 'apt dist-upgrade' versus the more straightforward package updating task performed by 'apt upgrade'.