xkill - kill a client by its X resource
xkill [-display displayname] [-id resource] [-button number]
This option specifies the name of the X server to contact.
This option specifies the X identifier for the resource
whose creator is to be aborted. If no resource is specified,
xkill will display a special cursor with which you
should select a window to be kill. This option specifies
the number of pointer button that should be used in
selecting a window to kill. If the word "any" is specified,
any button on the pointer may be used. By default,
the first button in the pointer map (which is usually the
leftmost button) is used. This option indicates that all
clients with top-level windows on the screen should be
killed. xkill will ask you to select the root window with
each of the currently defined buttons to give you several
chances to abort. Use of this option is highly discouraged.
This option indicates that xkill should ignore the
standard conventions for finding top-level client windows
(which are typically nested inside a window manager window),
and simply believe that you want to kill direct
children of the root.
The xkill command is a utility for forcing the X server to
close connections to clients. This program is very dangerous,
but is useful for aborting programs that have displayed
undesired windows on a user's screen. If no
resource identifier is given with -id, xkill will display
a special cursor as a prompt for the user to select a window
to be killed. If a pointer button is pressed over a
non-root window, the server will close its connection to
the client that created the window.
Specifies a specific pointer button number or the word
"any" to use when selecting windows.
X(1X), xwininfo(1X), XKillClient and XGetPointerMapping in
the Xlib Programmers Manual, KillClient in the X Protocol
Jim Fulton, MIT X Consortium
Dana Chee, Bellcore
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