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computer-janitor

NAME

computer-janitor - clean up a system installation

SYNOPSIS

computer-janitor find
computer-janitor cleanup [--all] [CRUFT]...
computer-janitor ignore [CRUFT]...
computer-janitor unignore
computer-janitor-gtk [options] [CRUFT]...

DESCRIPTION

computer-janitor and computer-janitor-gtk find and remove cruft from your system. The first one 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 installed because something else depended on them, but now nothing depends on them anymore. Typically this includes large numbers of libraries.

•

Packages that are no longer supported by the current release of the operating system. This can, for example, be applications whose development have stopped and that have no support, including no security support, anymore. 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: the relatime option is an example.

computer-janitor has 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 it's state: ignored or removable.

•

cleanup 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, you need to use the --all option.

•

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

OPTIONS

--all

With the cleanup operation, remove all pieces of cruft that are not ignored.

--state-file=FILE

Use FILE as the name of the state file, for persistent storage of the state (ignored or removable) of each piece of cruft. Default is /var/lib/computer-janitor/state.dat. Use /dev/null to disable persistent storage of state.

--no-act

Don't actually remove anything, just pretend to do so. This is useful for testing stuff.

--verbose

Be verbose: cause find to write a description of each piece of cruft it finds, to help the user understand why understand why the cruft is cruft.

EXIT STATUS

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.

ENVIRONMENT

COMPUTER_JANITOR_DEBUG

Set this to yes to set the logging level to DEBUG rather than INFO.

COMPUTER_JANITOR_PLUGINS

Set this to the directory in which computer-janitor should look for plugins. The default is to look for them in /usr/share/computer-janitor/plugins.

FILES

/var/lib/computer-janitor/state.dat

This file stores the state of cruft: ignored or removable. It only stores the state of cruft that have been state manipulated. The state of cruft not mentioned in this file is removable.

/etc/computer-janitor.d

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

EXAMPLE

To find all cruft on the system:

computer-janitor find

To remove a specific piece of cruft:

computer-janitor cleanup hello

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

computer-janitor ignore hello

To remove the ignored status:

computer-janitor unignore hello

To remove all cruft that isn't ignored:

computer-janitor cleanup --all

SEE ALSO

computer-janitor-gtk(8).