Linux CentOS various Problem solving summary

1. Linux terminal start graphical programming interface times error: NO protocol specified problem:

This is because Xserver does not allow graphics for other users to appear on the current screen by default. If you need other users ' graphics to appear on the current screen, you should perform the following commands with the user currently logged in, that is, the user before switching identities

Xhost +

Similar problems can occur with remote access:

First step: Log in to Linux with Root and start the VNC service;

Step two: According to the VNC port, set export Display=localhost:1 (1 for VNC to start on the first TTY), the startup information of VNC is shown in annex 1;

Step Three: Execute Xhost +, and tip "access control disabled, clients can connect from any host" is correct.

NO protocol specified

Linux CentOS various Problem solving summary