ubuntu更换国内apt源

ubuntu必备操作

1 更换apt镜像源

  1. 备份镜像
cp /etc/apt/sources.list /etc/apt/sources.list.bak
  1. 查看自己ubuntu版本
# 查看自己的codename
#查看自己的ubuntu版本[注意关注:DISTRIB_CODENAME,发行代号]
cat /etc/*release

# DISTRIB_CODENAME=cosmic
# 例如(下面是ubuntu的LTS长期支持版):
# Ubuntu20.04(focal)
# Ubuntu19.10(eoan)
# Ubuntu19.04(disco)
# Ubuntu18.04(bionic)
# Ubuntu16.04(xenial)
  1. 设置国内镜像源

我ubuntu的版本是18.10,国内上没有维护对应的镜像,但是大版本一致即可(所以我采用了bionic)

vim /etc/apt/sources.list
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-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-backports 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
  1. 更新软件列表,完成换源
apt update
  1. 修复损坏的软件包
apt-get install  -f
  1. 更新软件
apt-get upgrade

2 其他命令

①防火墙相关

# 查看防火墙状态
sudo ufw status
# 开启/关闭防火墙
sudo ufw enable/disable

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