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为什么无论我运行多少次更新，都会出现“X 个包可以更新”的信息？

tag-icon • tag-icon 18.04 upgrade updates
为什么无论我运行多少次更新，都会出现“X 个包可以更新”的信息？

作为免责声明，我对 Linux 并不熟悉。但我了解的足以安装我自己的服务器和所需的软件包。我拥有的是：

Distributor ID:   Ubuntu 
Description:      Ubuntu 18.04.5 LTS 
Release:          18.04
Codename:         bionic

每次我登录时，欢迎屏幕都是：

Welcome to Ubuntu 18.04.5 LTS (GNU/Linux 4.15.0-117-generic x86_64)
 
* Documentation:  https://help.ubuntu.com  * Management:    
https://landscape.canonical.com  * Support:       
https://ubuntu.com/advantage
 
   System information as of Sat Sep 12 14:25:50 EDT 2020
 
   System load:  0.35                Processes:           167   Usage
 of /:   24.5% of 228.23GB   Users logged in:     0   Memory usage: 32%
 IP address for wls1: 192.168.0.12   Swap usage:   0%
 
  * Kubernetes 1.19 is out! Get it in one command with:
 
      sudo snap install microk8s --channel=1.19 --classic
 
    https://microk8s.io/ has docs and details.
 
  * Canonical Livepatch is enabled.
    - All available patches applied.
 
 3 packages can be updated.
 0 updates are security updates.

跑步apt list --upgradeable回报：

base-files/bionic-updates 10.1ubuntu2.10 amd64 [upgradable from: 10.1ubuntu2.9] 
ubuntu-server/bionic-updates 1.417.5 amd64 [upgradable from: 1.417.4]

除了上面显示的三个更新之外，我确实收到了其他更新的通知，并且运行sudo apt-get upgrade会获取并安装所有更新，除了下面显示的三个更新之外。

我使用的两个命令sudo apt-get upgrade是sudo apt-get update

谁能告诉我哪里出了问题，或者更有可能是我做错了什么？

sudo apt-get update以下是和 的结果sudo apt-get update：

server:~$ sudo apt-get update  
Hit:1 http://archive.ubuntu.com/ubuntu bionic InRelease 
Hit:2 http://archive.ubuntu.com/ubuntu bionic-updates InRelease                 
Hit:3 http://archive.ubuntu.com/ubuntu bionic-backports InRelease               
Hit:4 http://security.ubuntu.com/ubuntu bionic-security InRelease           
 Reading package lists... Done
server:~$ sudo apt-get upgrade 
 Reading package lists... Done 
 Building dependency tree
 Reading state information... Done 
 Calculating upgrade... Done 
The following packages have been kept back:   
 base-files ubuntu-server 
0 upgraded, 0 newly installed, 0 to remove and 2 not upgraded. 
server:~$

答案1

您要首先运行：

sudo apt update
sudo apt dist-upgrade

然后，如果它没有更新软件包，请运行以下命令：

sudo apt install base-files ubuntu-server

如果出现问题，它会在安装前让您知道问题是什么。您可以选择 Y 或 N。

如果没有问题的话，可以选择Y，然后按ENTER。

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