安装ubuntu20.04后的操作(简单记录)

安装ubuntu20.04后的操作(简单记录)

ubuntu 启用ssh
sudo apt update
sudo apt install openssh-server
sudo systemctl status ssh

换源
要知道当前系统的代号，可以用以下命令：
lsb_release -a

cp -ra /etc/apt/sources.list /etc/apt/sources.list.bak  //备份

/   //阿里源

sudo vim /etc/apt/sources.list //写入源

例:ubuntu 20.04(focal) 配置如下

deb / focal main restricted universe multiverse
deb-src / focal main restricted universe multiversedeb / focal-security main restricted universe multiverse
deb-src / focal-security main restricted universe multiversedeb / focal-updates main restricted universe multiverse
deb-src / focal-updates main restricted universe multiversedeb / focal-proposed main restricted universe multiverse
deb-src / focal-proposed main restricted universe multiversedeb / focal-backports main restricted universe multiverse
deb-src / focal-backports main restricted universe multiverse

sudo apt-get update
sudo apt-get upgrade