Ubuntu20.04.3 LTS 安装MySQL5.7 c开发

Ubuntu20默认安装mysql8，需要mysql5.7环境进行c/c++程序开发，安装步骤：

一、换源

1、备份源

sudo cp /etc/apt/sources.list /etc/apt/sources.list.old

2、更新源

sudo vi /etc/apt/sources.list

清空原内容，将以下代码粘贴进去：

#阿里云源
deb http://mirrors.aliyun.com/ubuntu/ xenial main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ xenial-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ xenial-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ xenial-backports main restricted universe multiverse
##測試版源
deb http://mirrors.aliyun.com/ubuntu/ xenial-proposed main restricted universe multiverse
# 源碼
deb-src http://mirrors.aliyun.com/ubuntu/ xenial main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ xenial-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ xenial-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ xenial-backports main restricted universe multiverse
##測試版源
deb-src http://mirrors.aliyun.com/ubuntu/ xenial-proposed main restricted universe multiverse
# Canonical 合作夥伴和附加
deb http://mirrors.aliyun.com/ubuntu/ xenial partner
deb http://mirrors.aliyun.com/ubuntu/ xenial main

#清华源
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial main restricted universe multiverse
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-security main restricted universe multiverse
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-updates main restricted universe multiverse
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-backports main restricted universe multiverse
##測試版源
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-proposed main restricted universe multiverse
# 源碼
deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial main restricted universe multiverse
deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-security main restricted universe multiverse
deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-updates main restricted universe multiverse
deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-backports main restricted universe multiverse
##測試版源
deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-proposed main restricted universe multiverse
# Canonical 合作夥伴和附加
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial partner
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial main

3、更新源和软件：

# 更新镜像源
sudo apt-get update
# 更新软件
sudo apt-get upgrade

二、安装mysql5.7和开发包，按照以下步骤：

sudo apt-get install libtinfo5
sudo apt-get install mysql-client-core-5.7
sudo apt-get install mysql-client-5.7
sudo apt-get install mysql-server-5.7
sudo apt install libmysqlclient-dev

过程中需要确认一次卸载，输入两次口令。

安装完成后查看版本：

mysql -V

完成。