xrefresh - Man Page

xrefresh [-option ...]

Xrefresh is a simple X program that causes all or part of your screen to be repainted. This is useful when system messages have messed up your screen. Xrefresh maps a window on top of the desired area of the screen and then immediately unmaps it, causing refresh events to be sent to all applications.  By default, a window with no background is used, causing all applications to repaint “smoothly.” However, the various options can be used to indicate that a solid background (of any color) or the root window background should be used instead.

-white

Use a white background.  The screen just appears to flash quickly, and then repaint.

-black

Use a black background.  This can be somewhat disorienting as everything goes black for a moment.

-solid color

Use a solid background of the specified color.  Try green.

-root

Use the root window background.

-none

This is the default.  All of the windows simply repaint.

-geometry WxH+X+Y

Specifies the portion of the screen to be repainted; see X(7).

-display display

This  argument  allows  you  to  specify the server and screen to refresh; see X(7).

-version

This argument prints the program version and exits.

The xrefresh program uses the routine XGetDefault(3) to read defaults, so its resource names are all capitalized.

Black,  White,  Solid,  None,  Root

Determines what sort of window background to use.

Geometry

Determines the area to refresh.  Not very useful.

DISPLAY - To get default host and display number.

X(7)

It should have just one default type for the background.

Jim Gettys, Digital Equipment Corp., MIT Project Athena

x11vnc(1).