一、提出问题
- 执行命令:
sudo apt-get update
,更新依赖包
- 现在更新依赖包报错:
明文签署文件不可用,结果为'NOSPLIT'
二、解决问题
- 备份原有源列表文件,进入
/etc/apt
目录,执行命令:sudo mv sources.list sources.list.back
- 新建源列表文件,添加中科大,执行命令:
sudo vim sources.list
deb http://mirrors.ustc.edu.cn/ubuntu/ focal main restricted universe multiverse
deb http://mirrors.ustc.edu.cn/ubuntu/ focal-security main restricted universe multiverse
deb http://mirrors.ustc.edu.cn/ubuntu/ focal-updates main restricted universe multiverse
deb http://mirrors.ustc.edu.cn/ubuntu/ focal-proposed main restricted universe multiverse
deb http://mirrors.ustc.edu.cn/ubuntu/ focal-backports main restricted universe multiverse
deb-src http://mirrors.ustc.edu.cn/ubuntu/ focal main restricted universe multiverse
deb-src http://mirrors.ustc.edu.cn/ubuntu/ focal-security main restricted universe multiverse
deb-src http://mirrors.ustc.edu.cn/ubuntu/ focal-updates main restricted universe multiverse
deb-src http://mirrors.ustc.edu.cn/ubuntu/ focal-proposed main restricted universe multiverse
deb-src http://mirrors.ustc.edu.cn/ubuntu/ focal-backports main restricted universe multiverse
- 执行命令:
sudo apt-get update