[linux-28] 安装idea2020

一、步骤
1.下载地址: https://www.jetbrains.com/idea/download/#section-windows
2.解压缩到 /opt/idea
3.启动idea bin目录下 ./idea.sh，配置jdk
4.编写Hello world程序并测试成功!
mkdir /opt/idea
tar -zxvf ideaIU-2020.2.3.tar.gz
(在图形界面窗口)
cd ideaIU-2020.2.3/bin
./idea.sh