Linux screen configuration

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作用：
1.可以在不同tty之间共享
2.保留窗口
1. 安装rpm包
查询是否有相关安装包：yum search screen
安装：yum install screen.i386
2. 创建窗口：screen
3. 检查是否在screen中：tty
结果应该为：/dev/pts/0
4. 退出：Ctrl+a+d
5. 查看screen编号：screen -ls
6. 再进入screen：screen -r screen名字

7. 关闭screen：Ctrl+d

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