Access remote Unix host GUI using X11 in Mac OS

1. Start XQuartz
2. Open the preference settings, and select "simulate three-Key mouse"
3. Select "Full Screen mode" for the output, and press Command-Option-A to switch
4. If the configuration is modified, You need to exit and restart to take effect.
5. Select "Application-terminal"
6. After the terminal window is opened, enter:
Xhost + and press ENTER
7. log on to the remote host:
Ssh-X username @ host
Enter password to log on
8. Enter setenv and press enter to view the DISPLAY variable. Set the DISPLAY variable:
Setenv DISPLAY localhost: 10.0
9. You can enter xclock. In the displayed window, you can use the graphical interface of the remote host.
10. When exiting, close the graphic window and enter exit on the command line to exit.