解决 Ubuntu E:无法定位软件包问题

image-20210802134132123

一定有很多小伙伴遇到了如上问题,之前解决好过,又出问题了,归咎到底还是源镜像的问题

产生 E:无法定位软件包安全提示原因有很多。如网络链接问题、apt 源过期了。

解决方法:

1、备份 /etc/apt/sources.list 文件

执行命令 sudo cp /etc/apt/sources.list /etc/apt/sources.list.old

2、打开文件 sudo vim /etc/apt/sources.list

3、复制阿里源(Ubuntu18.04 配置如下)

deb http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse

deb http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse

deb http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse

deb http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse

deb http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse

4、重新获取软件包列表

sudo apt-get update

5、在执行安装命令

sudo apt-get install yum

image-20210802134528594

可以成功安装了。

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