What is an .Xauthority file?

The .Xauthority file is an important file in the X window system used to verify user identity and authorize users to access the X server. It stores the user's authentication information and permission information and is used when the user logs in to the X Window System. Correctly setting and managing the permissions of the .Xauthority file is crucial to ensuring the user's identity security and the security of the system. The permission setting of the .Xauthority file is very important. Only the user himself should have read and write permissions on the file to ensure that the user's identity information is not accessed or modified by others.