1、安装screen：yum install screen
2, view screen if the installation was successful: rpm -qa | grep screen
3. Create a screen: screen -S screen name
4, run jar package: java -jar package name
5, ctrl + A + D to exit the current window
6, jar that is running in the background
Note: ①screen -ls View the background screen
②screen -r 27379 (screen number) into the screen
