gencolor — output a pattern of byte values
Gencolor
repeats a pattern of up to 8192 8-bit values on its standard output.
The values, which range from 0 to 255, are taken either from the command
line, or in binary from its standard input. The
-r
flag can be used to specify the number of times to repeat the given
pattern, the default being infinity.
This program is useful for producing a given grey value or
color. Note that
gencolor
will refuse to write its output to a window, you must redirect the output to a file.