ubuntu学习1：ubuntu18.04系统安装及优化

Install ubuntu

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keyboard layout ：select English
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Updates and other sofeware
Normal installation
Download updates while installing ubuntu
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Installation type
Erase disk and install ubuntu
Install now

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shanghai

name login

wait…wait…

Installation complete
restart

apt-get install openssh-server
sudo systemctl start ssh
sudo systemctl enable ssh

2.安装vim

sudo apt-get install vim

3.设置固定地址
查看自己的网卡地址

bluesv@bluesv-virtual-machine:/$ ip add
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: ens160: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
    link/ether 00:0c:29:6f:40:b9 brd ff:ff:ff:ff:ff:ff
    inet 192.168.1.190/24 brd 192.168.1.255 scope global dynamic noprefixroute ens160
       valid_lft 84431sec preferred_lft 84431sec
    inet6 fe80::6e9c:6fc1:82d0:4cfd/64 scope link noprefixroute
       valid_lft forever preferred_lft forever
bluesv@bluesv-virtual-machine:/$

修改网卡地址为固定地址

sudo vim /etc/netplan/01-network-manager-all.yaml

network:
　version: 2
    renderer: NetworkManager
    ethernets:
　　ens160:
　　dhcp4: no
　　addresses: [192.168.1.67/24]
　　gateway4: 192.168.1.1
　　nameservers:
　　　　addresses: [8.8.8.8, 114.114.114.114]

4.更新默认源为阿里源

sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak
sudo su
>/etc/apt/sources.list
vim /etc/apt/sources.list

deb http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse

#更新
apt-get update
apt-get upgrade