cruft - Check the filesystem for cruft (missing and unexplained files)

       This manual page was written by Alexandre Detiste <alexandre@detiste.be>, for the Debian GNU/Linux system
       (but may be used by others).

                                                                                                        CRUFT(8)

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.

       It is possible to get some debugging information from cruft by setting the variable DEBUG.

       A user can tune execution by providing extra configuration files:

       /etc/cruft/ignore
              Do not  process  paths  listed  in  this  file,  this  can  speed-up  matching.   Example  values:
              /var/schroot/, /var/www/ ...  This will override the default /usr/share/cruft/ignore/etc/cruft/filters/*
              Rules  (glob-patterns)  similar  that  are  similar  to  those  built-in  into cruft package.  The
              uppercase files are always processed, the lowercase ones are processed when  matching  package  is
              installed.

       /etc/cruft/explain/*
              Shell  scripts that will print-out a list of temporary file belonging to a package.  The uppercase
              files are always processed, the lowercase ones are processed when matching package is installed.

       cruft - Check the filesystem for cruft (missing and unexplained files)

       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.

       Documentation from original cruft package: https://github.com/a-detiste/cruft/blob/master/README

cruft[FILE]