xhost

Question 1

xhost

Answer 1

The xhost program is used to add and delete host names or user names to the list allowed to make connections to the X server.

Question 2

xhost [OPTIONS]

[+]name

-name

+

-

nothing

Answer 2

[+]name, The given name is added to the list allowed to connect to the X server.

-name, The given name is removed from the list allowed to connect to the X server.

+, Access is granted to everyone.

-, Access is restricted to those on the list.

nothing, If no command line arguments are given, a message indicating whether or not access control is currently enabled is printed, followed by the list of those allowed to connect.