skillnad mellan upgrade och dist-upgrade på apt?

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skillnad mellan upgrade och dist-upgrade på apt?

frågan är som rubriken lyder. vad är skillnaden?

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man apt-get

upgrade upgrade is used to install the newest versions of all packages currently installed on the system from the sources enumerated in /etc/apt/sources.list. Packages currently installed with new versions available are retrieved and upgraded; under no circum- stances are currently installed packages removed, or packages not already installed retrieved and installed. New versions of currently installed packages that cannot be upgraded without changing the install status of another package will be left at their current version. An update must be performed first so that apt-get knows that new versions of packages are available. dist-upgrade dist-upgrade in addition to performing the function of upgrade, also intelligently handles changing dependencies with new ver- sions of packages; apt-get has a "smart" conflict resolution system, and it will attempt to upgrade the most important pack- ages at the expense of less important ones if necessary. The /etc/apt/sources.list file contains a list of locations from which to retrieve desired package files. See also apt_prefer- ences(5) for a mechanism for overriding the general settings for individual packages.

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Ursprungligen inskrivet av phz
man apt-get

upgrade upgrade is used to install the newest versions of all packages currently installed on the system from the sources enumerated in /etc/apt/sources.list. Packages currently installed with new versions available are retrieved and upgraded; under no circum- stances are currently installed packages removed, or packages not already installed retrieved and installed. New versions of currently installed packages that cannot be upgraded without changing the install status of another package will be left at their current version. An update must be performed first so that apt-get knows that new versions of packages are available. dist-upgrade dist-upgrade in addition to performing the function of upgrade, also intelligently handles changing dependencies with new ver- sions of packages; apt-get has a "smart" conflict resolution system, and it will attempt to upgrade the most important pack- ages at the expense of less important ones if necessary. The /etc/apt/sources.list file contains a list of locations from which to retrieve desired package files. See also apt_prefer- ences(5) for a mechanism for overriding the general settings for individual packages.

Kollade faktiskt där innan jag ställde frågan här på forumet. På ett konstigt sätt förstod jag inte "also intelligently handles changing dependencies with new versions of packages" innan. Nu verkar det som att jag förstår förklaringen. Den uppgraderar också dependency-paketen alltså?

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Den försöker alltså uppgradera så mycket som bara går. Problemet är att om man uppdaterar vissa bibliotek så kanske äldre programvara kan sluta att fungera om de specifikt beror på de gamla biblioteken. upgrade löser detta genom att strunta i att uppdatera något som skulle kunna krångla, dist-upgrade löser det genom nån sorts magisk versionshantering. Vanligtvis brukar dist-upgrade bara köra "bort med det gamla - in med det nya"-metoden, och den ska funka bra i de allra flesta fall. Sedan installerar som sagt upgrade inga nya paket som inte redan finns i äldre versioner i systemet.

Vanligen är det dist-upgrade man vill köra, i min erfarenhet.

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