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apt-get dist-upgrade -y 與 apt-get Upgrade

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apt-get dist-upgrade -y 與 apt-get Upgrade

我一直在想這個問題，但尚未在任何地方找到答案。誰能解釋為什麼一些來源在升級命令後添加 -y ？它的作用是什麼。

答案1

  • apt-get update從儲存庫下載套件清單並「更新」它們以獲取有關最新版本的套件及其依賴項的資訊。它將對所有儲存庫和 PPA 執行此操作。

    從https://linux.die.net/man/8/apt-get

              Used to re-synchronize the package index files from their sources. 
          The indexes of available packages are fetched from the location(s) 
          specified in /etc/apt/sources.list(5). An update should always be 
          performed before an upgrade or dist-upgrade.

  • apt-get upgrade如果 APT 透過 apt-get update 知道這些新版本，將會取得機器上現有的軟體包的新版本。

    從https://linux.die.net/man/8/apt-get

              Used to install the newest versions of all packages currently
          installed on the system from the sources enumerated in 
          /etc/apt/sources.list(5). Packages currently installed with new 
          versions available are retrieved and upgraded; under no 
          circumstances are currently installed packages removed, nor
          are packages that are 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.

  • -y, --yes, --assume-yes

              Automatic yes to prompts; assume "yes" as answer to all prompts and
          run non-interactively. If an undesirable situation, such as
          changing a held package, trying to install a unauthenticated
          package or removing an essential package occurs then apt-get will
          abort. Configuration Item: APT::Get::Assume-Yes.

    如果您選擇不使用apt-getwith-y選項，則需要以互動方式回答從該指令收到的所有提示，以便繼續執行該指令。

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