X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/d61960d9244340956a27f4ca46aecd15cc75e18b..c38847ebbbab115b01dd1421dee55d5a50d404f1:/doc/apt-get.8.xml?ds=sidebyside diff --git a/doc/apt-get.8.xml b/doc/apt-get.8.xml index a372a0d30..76a53aec2 100644 --- a/doc/apt-get.8.xml +++ b/doc/apt-get.8.xml @@ -230,19 +230,30 @@ - changelog downloads a package changelog and displays - it through sensible-pager. The server name and base - directory is defined in the APT::Changelogs::Server - variable (e.g. packages.debian.org/changelogs for - Debian or changelogs.ubuntu.com/changelogs for - Ubuntu). - By default it displays the changelog for the version that is - installed. However, you can specify the same options as for - the command. - + changelog tries to download the + changelog of a package and displays it through + sensible-pager. By default it + displays the changelog for the version that is installed. + However, you can specify the same options as for the + command. + + Displays by default a deb822 formatted listing of + information about all data files (aka index targets) apt-get + update would download. Supports a + option to modify the output format as + well as accepts lines of the default output to filter the records + by. The command is mainly used as an interface for external tools + working with APT to get information as well as filenames for + downloaded files so they can use them as well instead of + downloading them again on their own. Detailed documentation is + omitted here and can instead be found in the source tree in + doc/acquire-additional-files.txt. + + + @@ -316,17 +327,15 @@ - No action; perform a simulation of events that would occur but do not - actually change the system. - Configuration Item: APT::Get::Simulate. - - Simulated runs performed as a user will automatically deactivate locking - (Debug::NoLocking), and if the option - APT::Get::Show-User-Simulation-Note is set - (as it is by default) a notice will also be displayed indicating that - this is only a simulation. Runs performed as root do not trigger either - NoLocking or the notice - superusers should know what they are doing - without further warnings from apt-get. + No action; perform a simulation of events that would occur + based on the current system state but do not actually change the + system. Locking will be disabled () + so the system state could change while apt-get is + running. Simulations can also be executed by non-root users which might + not have read access to all apt configuration distorting the simulation. + A notice expressing this warning is also shown by default for non-root + users (). + Configuration Item: APT::Get::Simulate. Simulated runs print out a series of lines, each representing a dpkg operation: configure (Conf), remove (Remv) @@ -420,12 +429,36 @@ Configuration Item: APT::Get::Only-Upgrade. + + This is a dangerous option that will cause apt to continue + without prompting if it is doing downgrades. It + should not be used except in very special situations. Using + it can potentially destroy your system! + Configuration Item: APT::Get::allow-downgrades. Introduced in APT 1.1. + + + + Force yes; this is a dangerous option that will cause apt to continue + without prompting if it is removing essentials. It + should not be used except in very special situations. Using + it can potentially destroy your system! + Configuration Item: APT::Get::allow-remove-essential. Introduced in APT 1.1. + + + + Force yes; this is a dangerous option that will cause apt to continue + without prompting if it is changing held packages. It + should not be used except in very special situations. Using + it can potentially destroy your system! + Configuration Item: APT::Get::allow-change-held-packages. Introduced in APT 1.1. + + Force yes; this is a dangerous option that will cause apt to continue without prompting if it is doing something potentially harmful. It should not be used except in very special situations. Using force-yes can potentially destroy your system! - Configuration Item: APT::Get::force-yes. + Configuration Item: APT::Get::force-yes. This is deprecated and replaced by , , in 1.1. @@ -520,9 +553,13 @@ - Ignore if packages can't be authenticated and don't prompt about it. - This is useful for tools like pbuilder. - Configuration Item: APT::Get::AllowUnauthenticated. + Ignore if packages can't be authenticated and don't prompt + about it. This can be useful while working with local repositories, + but is a huge security risk if data authenticity isn't ensured in + another way by the user itself. The usage of the + option for &sources-list; entries should + usually be preferred over this global override. Configuration Item: + APT::Get::AllowUnauthenticated.