Provided by: computer-janitor_2.1.0-0ubuntu8_all bug


       computer-janitor - clean up a system installation


       computer-janitor [--version|-h]
       computer-janitor find [-i|-r|-s|-v|-h]
       computer-janitor clean [-a|-v|-h] [CRUFT]...
       computer-janitor ignore [-h] CRUFT
       computer-janitor unignore [-h] CRUFT


       computer-janitor  and  computer-janitor-gtk  find  and remove cruft from your system.  The
       former is a command line program, the latter has a graphical user interface.

       Cruft is anything that shouldn't be on the system, but is.  Stretching the definition,  it
       is also things that should be on the system, but aren't.  Examples:

       ·      Packages  that  were  originally installed because something else depended on them,
              but the depending package has since been removed.  Typically  this  includes  large
              numbers of libraries.

       ·      Packages  that  are  no  longer  supported  by the current release of the operating
              system.  For example, this can be applications whose development have  stopped  and
              that  no  longer  have  support,  including  for  security  issues.   Keeping  such
              applications installed can be dangerous.

       ·      Configuration tweaks that are missing from the system, but which would be there  if
              the  system was installed from scratch.  For example, mount options for filesystems
              such as the relatime option.

       computer-janitor has four modes of operation, invoked by the first non-option word in  the
       argument list.

       ·      find searches for cruft and prints out a list of them.  Each piece of cruft is also
              tagged with its state: ignored or removable.

       ·      clean actually removes the cruft.  It will remove those pieces of cruft you name on
              the  command  line.   If  you  want to remove everything identified by find that is
              marked removable, use the --all option.

       ·      ignore and unignore mark cruft as ignored or removable, respectively.


       Each subcommand listed above has its own set of options.  If computer-janitor  is  invoked
       with no subcommand, the following options are available:

              Print the version number and exit.

              Print some global help and exit.

       The find subcommand supports the following options:

              Find and display only the system's ignored cruft.

              Find and display only the system's removable cruft.

              Display only the cruft names; do not use with --verbose.

              Display a detailed explanation for each piece of cruft found.

              Print detailed help for the find subcommand and exit.

       The  clean  subcommand  requires  either a cruft name or the --all option to specify which
       cruft to remove.  It supports the following options:

       --all | -a
              Remove all system cruft that are not ignored.

              Provide more details about the cruft being cleaned up.

              Print detailed help for the clean subcommand and exit.

       The ignore and unignore commands both take  the  name  of  a  cruft  to  mark  ignored  or
       removable, respectively.  They both also accept these options:

              Print detailed help for the ignore or unignore subcommands and exit.


       computer-janitor  will  return an exit code of 0 for successful operation (no errors).  It
       will return a non-zero exit code if there are any errors.  It is  not  an  error  to  find
       cruft, or to not find cruft.


              This  file  stores  the  ignored or removable state of system cruft.  Any cruft not
              listed in this file is by default removable.

              This directory contains whitelist  files,  which  specify  things  that  are  never
              considered  cruft.   A  whitelist  file  has  a name that ends with .whitelist, and
              contains one (potential) cruft name per line.  (Empty  lines  and  lines  beginning
              with # are ignored.)


       To find all cruft on the system:

              computer-janitor find

       To remove a specific piece of cruft:

              computer-janitor clean hello

       To mark a piece of cruft as ignored, so that it isn't removed by clean --all:

              computer-janitor ignore hello

       To mark a piece of cruft as removable again:

              computer-janitor unignore hello

       To remove all cruft that isn't ignored:

              computer-janitor clean --all