man upgrade-system.conf (5): Configuration file for

DESCRIPTION

upgrade-system.conf is the configuration file for the upgrade-system(8) Debian administration utility. This file specifies command options used for calling apt-get(8) and deborphan(1) within upgrade-system(8).

Lines starting with a hash mark ("#") and empty lines are ignored.

ENVIRONMENT

The configuration file may contain any of these environment variables:

CLEANOPTS

This variable selects which one of autoclean or clean to execute as the apt-get(8) cleaning command. For example:

CLEANOPTS="clean"

Consult the apt-get(8) manual page to check which options are available for any particular APT version, before setting this variable.

UPGRADEOPTS

This variable specifies which one of dist-upgrade or upgrade to execute as the apt-get(8) upgrade command and the command options. For example:

UPGRADEOPTS="--fix-broken --purge --show-upgraded dist-upgrade"

Consult the apt-get(8) manual page to check which options are available for any particular APT version, before setting this variable.

ORPHANOPTS

This variable specifies deborphan(1) command options. For example:

ORPHANOPTS="--guess-all --libdevel"

One should read the deborphan(1) manual page to check which options are available for any particular version, before setting this variable.

FLAUSCH

Setting this variable enables various extremely pedantic purge options.

This variable has no default value.

This feature is totally experimental; usage is strongly discouraged and should only be attempted by truly experienced Debian administrators. It can be used to sanitize a Debian system after a distribution upgrade or to detect packages that don't conform to the Debian Policy. Setting the variable as a command line environment, only when needed, is considered a safer approach than adding it to upgrade-system.conf variables.

sudo FLAUSCH=jawohl upgrade-system

FILES

Because upgrade-system is an APT front-end, all precautions relating to APT configuration should be observed. Special attention is required to:

/etc/apt/preferences

To prevent untested packages from overwriting stable ones, setting this combination of APT preferences is recommended:

Package: *
Pin: release a=stable
Pin-Priority: 990
Package: *
Pin: release a=testing
Pin-Priority: 500
Package: *
Pin: release a=unstable
Pin-Priority: 100
Package: *
Pin: release a=experimental
Pin-Priority: 1

This enforces a priority to packages from Stable, yet still allows ones from Testing, Unstable or Experimental to get installed via appropriate apt-get(8) options to override the default release.

NOTES

In the absence of a configuration file, upgrade-system(8) will take the above environment variable examples as fallback default values.

BUGS

Certain combinations of deborphan(1) options purge a dangerous quantity of packages, potentially leaving a system in a severely crippled state.

AUTHORS

LICENSE

GPLv2+: GNU GPL version 2 or later <http://gnu.org/licenses/gpl.html>.