ubuntu22.04在线安装.net6SDK

1. 运行以下命令,查找下载对应包文件
   

   sudo apt update && sudo apt install dotnet6
   

   如果只想安装部分组件,命令如下:

   // 仅安装特定组件
   sudo apt install dotnet-sdk-6.0 
   sudo apt install dotnet-runtime-6.O 
   sudo apt install aspnetcore-runtime-6.0
   

    
   但是运行命令后报错如下:

   N: See apt-secure(8) manpage for repository creation and user configuration details.
   N: Updating from such a repository can't be done securely, and is therefore disabled by default.
   E: The repository 'http://archive.ubuntu.com/ubuntu jammy InRelease' is no longer signed.
   E: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/jammy/InRelease  901   [IP: 122.229.31.17 80]
   N: See apt-secure(8) manpage for repository creation and user configuration details.
   N: Updating from such a repository can't be done securely, and is therefore disabled by default.
   E: The repository 'http://archive.ubuntu.com/ubuntu jammy-updates InRelease' is no longer signed.
   E: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/jammy-updates/InRelease  901   [IP: 122.229.31.17 80]
   E: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/jammy-backports/InRelease  901   [IP: 122.229.31.17 80]
   E: The repository 'http://archive.ubuntu.com/ubuntu jammy-backports InRelease' is no longer signed.
   N: Updating from such a repository can't be done securely, and is therefore disabled by default.
   N: See apt-secure(8) manpage for repository creation and user configuration details.
   E: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/jammy-security/InRelease  901   [IP: 122.229.31.17 80]
   E: The repository 'http://archive.ubuntu.com/ubuntu jammy-security InRelease' is no longer signed.
   N: Updating from such a repository can't be done securely, and is therefore disabled by default.
   N: See apt-secure(8) manpage for repository creation and user configuration details.
   

    ping了一下报错信息中的IP地址发现也是通的

   

    接着尝试网上找到的方法
   1.apt-get update 或者 apt-get clean或者 apt-get update,三个命令全部执行完成后,发现问题依旧
   2.运行修改的命令 apt-get update --fix-missing  问题未解决
   3.更换source  ,打开文件 sudo vim /etc/resolv.conf 并在文件中添加 nameserver 8.8.8.8,问题还是没有解决
   4.修改虚拟机的网络配置,修改为NAT,

   

    

   再次执行安装的代码

   

    成功执行,具体原因不太清楚两种网络方式有什么不同,两种都是可以ping通外网的.
    查看安装是否成功

   dotnet --info
   

    出现版本信息,代表安装成功

   

    

2. 卸载dotnet命令
   

   dotnet --list-sdks # 查看下载的 sdk
   dotnet --list-runtimes # 查看下载的 runtime
   
   sudo apt remove dotnet-sdk-$版本号
   sudo apt remove dotnet-runtime-$版本号