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Ubuntu 更新后仍然提示软件包需要更新

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Ubuntu 更新后仍然提示软件包需要更新

我执行了 sudo apt-get update 和 sudo apt-get upgrade ，结果是：

Hit http://security.ubuntu.com saucy-security/universe Translation-en
Ign http://security.ubuntu.com saucy-security/main Translation-en_US
Ign http://security.ubuntu.com saucy-security/universe Translation-en_US
Fetched 8,843 kB in 6s (1,422 kB/s)                                                                                                                                                               
Reading package lists... Done
ubuntu@core01:~$ sudo apt-get upgrade
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages have been kept back:
  linux-headers-generic linux-headers-virtual linux-image-virtual linux-virtual python3-distupgrade ubuntu-release-upgrader-core
0 upgraded, 0 newly installed, 0 to remove and 6 not upgraded.
ubuntu@core01:~$

于是我做了：

sudo do-release-upgrade
Checking for a new Ubuntu release
No new release found

下次我登录时：

  Get cloud support with Ubuntu Advantage Cloud Guest:
    http://www.ubuntu.com/business/services/cloud

  Use Juju to deploy your cloud instances and workloads:
    https://juju.ubuntu.com/#cloud-saucy

24 packages can be updated.
9 updates are security updates.

有人能建议哪些仍然说 24 个包需要更新吗？

谢谢

答案1

比我在这里输入的答案更好：https://askubuntu.com/questions/601/the-following-packages-have-been-kept-back-why-and-how-do-i-solve-it

do-release-upgrade用于在 Ubuntu 中的主要版本之间切换。尽管名称听起来相似，但apt-get dist-upgrade仅允许处理新的和变化的依赖项。有时这是从 Debian/Ubuntu 的一个版本升级到下一个版本的一部分，但通常当您关注测试/不稳定版本和包装更改时也是如此。

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