|System Manager's Manual
cruft - Check the filesystem for cruft (missing and unexplained files)
cruft [ FILE ]
cruft is a program that goes over the Debian packaging system's database, and compares the contents of that with the files actually on your system, and produces a summary of the differences.
If a file is provided, cruft-ng will analyze this single file and
print matching package(s) name(s).
Without any option, cruft-ng will analyze the whole system.
It is possible to get some debugging information from cruft by setting the variable DEBUG.
Documentation from original cruft package: https://github.com/a-detiste/cruft/blob/master/README
This manual page was written by Alexandre Detiste <email@example.com>, for the Debian GNU/Linux system (but may be used by others).