deborphan:tldr:9dbf7
The "deborphan --nice-mode" command is used to find and list orphaned packages on a Debian-based system. An orphaned package is a package that was installed as a dependency for some other package but is no longer needed by any other package on the system.
When the "--nice-mode" option is used, deborphan prioritizes the selected packages for removal based on the number of votes they have received from other packages. Packages with higher vote counts are considered less likely to be required by other packages and are listed first.
In other words, "deborphan --nice-mode" helps to identify orphaned packages that are likely safe to remove as they are less likely to be required by other packages. It provides an ordered output of orphaned packages, making it easier for the user to decide which packages can be safely uninstalled.