Ubuntu 环境安装

一、基础安装

1、在Ubuntu上启用SSH

sudo apt install openssh-server
sudo ufw allow ssh

2、安装vim

sudo apt install vim

3、更换国内源

sudo cp /etc/apt/sources.list /etc/apt/sources.list.backup
sudo vim /etc/apt/sources.list
ggvG D 删除

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

sudo apt-get update
sudo apt-get upgrade

99、剪贴板

ps aux|grep java

二、MySql 5.7.22安装(wget)

MySQL 5.7 卸载

1. 查看MySQL依赖 ： dpkg --list|grep mysql

2. 卸载： sudo apt-get remove mysql-common

3. 卸载： sudo apt-get autoremove --purge mysql-server-5.7(这里版本对应即可)

4. 清除残留数据: dpkg -l|grep ^rc|awk '{print$2}'|sudo xargs dpkg -P

5. 再次查看MySQL的剩余依赖项: dpkg --list|grep mysql(这里一般就没有输出了，如果有执行下一步)

6. 继续删除剩余依赖项，如：sudo apt-get autoremove --purge mysql-apt-config

   【在执行过程中有的需要sudo】

   【第6部执行完了就彻底删除了】

MySQL 5.7安装

1、下载配置文件：wget https://dev.mysql.com/get/mysql-apt-config_0.8.1-1_all.deb

2、安装：sudo dpkg -i mysql-apt-config_0.8.1-1_all.deb

3、选择 ：debian wheezy

4、更新： sudo apt update

(如果报错) sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 8C718D3B5072E1F5

5、查看配置项：sudo apt-cache policy mysql-server

如果还是没有 5.7.22-1debian7 重试 sudo apt update

6、依次安装

sudo apt install mysql-client=5.7.22-1debian7
sudo apt install mysql-community-server=5.7.22-1debian7
sudo apt install mysql-server=5.7.22-1debian7 

7、配置root远程登录

mysql -uroot -p
use mysql;
alter user 'root'@'localhost' identified by 'root';
flush privileges;
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'root' WITH GRANT OPTION;
flush privileges;
quit

8、忽略大小写

sudo vim /etc/mysql/mysql.conf.d/mysqld.cnf
在【mysqld】下面增加一行：lower_case_table_names=1
在【mysqld】下面修改：bind-address=0.0.0.0
修改后保存
sudo service mysql restart

9、Navicat验证忽略大小写

show Variables like '%table_names';
查看lower_case_table_names的值，0代表区分，1代表不区分