Man page 1 : xrefresh

xrefresh - refresh all or part of an X screen

xrefresh [-option ...]

Xrefreshis 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. Xrefreshmaps 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 (in effect, turning off all of the electron guns to the tube). 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).

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

Black\fP, 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.
          .SH SEE ALSO X(7)

It should have just one default type for the background.

Jim Gettys, Digital Equipment Corp., MIT Project Athena