Screen分屏显示对Xshell并不友好，所以，直接卸载了：
[root@localhost src]# yum remove screen Loaded plugins: fastestmirror, langpacks Resolving Dependencies --> Running transaction check ---> Package screen.x86_64 0:4.1.0-0.27.20120314git3c2946.el7_9 will be erased --> Finished Dependency Resolution Dependencies Resolved ========================================= Package Arch Version Repository Size ========================================= Removing: screen x86_64 4.1.0-0.27.20120314git3c2946.el7_9 @updates 914 k Transaction Summary ========================================= Remove 1 Package Installed size: 914 k Is this ok [y/N]: y Downloading packages: Running transaction check Running transaction test Transaction test succeeded Running transaction Erasing : screen-4.1.0-0.27.20120314git3c2946.el7_9.x86_64 1/1 Verifying : screen-4.1.0-0.27.20120314git3c2946.el7_9.x86_64 1/1 Removed: screen.x86_64 0:4.1.0-0.27.20120314git3c2946.el7_9 Complete!
主要原因在于左右分屏不能实现，后面的参考链接说：左右分屏在 centos 下好像不可以，据说要 ubuntu、debian（Ctrl+a |）。所以，重新安装了tumx:
# yum install tmux Loaded plugins: fastestmirror, langpacks Loading mirror speeds from cached hostfile * epel: mirrors.tuna.tsinghua.edu.cn Resolving Dependencies --> Running transaction check ---> Package tmux.x86_64 0:1.8-4.el7 will be installed --> Finished Dependency Resolution Dependencies Resolved ========================================= Package Arch Version Repository Size ========================================= Installing: tmux x86_64 1.8-4.el7 base 243 k Transaction Summary ========================================= Install 1 Package Total download size: 243 k Installed size: 558 k Is this ok [y/d/N]: y Downloading packages: tmux-1.8-4.el7.x86_64.rpm | 243 kB 00:00:01 Running transaction check Running transaction test Transaction test succeeded Running transaction Installing : tmux-1.8-4.el7.x86_64 1/1 Verifying : tmux-1.8-4.el7.x86_64 1/1 Installed: tmux.x86_64 0:1.8-4.el7 Complete!
安装完tumx之后，首先要键入tumx，然后在每次想要做的事情之前，先按上ctrl+b就可以了，例如：
" 上下分屏 (用到shift)
% 左右分屏 (用到shift)
x 关闭当前分屏
! 将当前面板置于新窗口,即新建一个窗口,其中仅包含当前面板
ctrl+方向键 以1个单元格为单位移动边缘以调整当前面板大小
alt+方向键 以5个单元格为单位移动边缘以调整当前面板大小
q 显示面板编号
o 选择当前窗口中下一个面板
方向键 移动光标选择对应面板
{ 向前置换当前面板
} 向后置换当前面板
alt+o 逆时针旋转当前窗口的面板
ctrl+o 顺时针旋转当前窗口的面板
z 最大化当前所在面板
page up 向上滚动屏幕，q 退出
page down 向下滚动屏幕，q 退出
参考链接：
[1] linux终端分屏-screen-chape的个人空间-OSCHINA-中文开源技术交流社区
[2] xshell关闭终端后-程序仍然能够运行(tmux-screen-nohup;ABAQUS Analysis User's Manual(v6.6)
[3] 中国本土纳米杂志nano research 和 nanoscale 2011年影响因子走势及其投稿建议