Description:

The xauth program is used to edit and display the authorization infor-
mation used in connecting to the X server. This program is usually
used to extract authorization records from one machine and merge them
in on another (as is the case when using remote logins or granting
access to other users). Commands (described below) may be entered
interactively, on the xauth command line, or in scripts. Note that
this program does not contact the X server except when the generate
command is used. Normally xauth is not used to create the authority
file entry in the first place; xdm does that.