前言
ubuntu 20.04中sources.list文件恢复系统默认源
小白学习,误该后改不回来,找了很久才找到,做个记录
一、sources.list文件恢复系统默认源
1.进入编辑 sources.list
代码如下:
sudo gedit /etc/apt/sources.list
2.复制默认源内容
然后把下面默认源内容复制进去
ubuntu20.LTS系统默认源sources.list文件内容
内容如下:
#deb cdrom:[Ubuntu 20.04 LTS _Focal Fossa_ - Release amd64 (20200423)]/ focal main restricted
# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://cn.archive.ubuntu.com/ubuntu/ focal main restricted
# deb-<