#cd /etc/apt
#cp sources.list sources.list.bak
#vim sources.list
#deb http://mirrors.aliyun.com/ubuntu/ jammy main restricted universe multiverse
#deb http://mirrors.aliyun.com/ubuntu/ jammy-security main restricted universe multiverse
#deb http://mirrors.aliyun.com/ubuntu/ jammy-updates main restricted universe multiverse
#deb http://mirrors.aliyun.com/ubuntu/ jammy-proposed main restricted universe multiverse
#deb http://mirrors.aliyun.com/ubuntu/ jammy-backports main restricted universe multiverse
#deb-src http://mirrors.aliyun.com/ubuntu/ jammy main restricted universe multiverse
#deb-src http://mirrors.aliyun.com/ubuntu/ jammy-security main restricted universe multiverse
#deb-src http://mirrors.aliyun.com/ubuntu/ jammy-updates main restricted universe multiverse
#deb-src http://mirrors.aliyun.com/ubuntu/ jammy-proposed main restricted universe multiverse
#deb-src http://mirrors.aliyun.com/ubuntu/ jammy-backports main restricted universe multiverse
#apt update