ppmrainbow
Generate a rainbow. tldr-pages
On several platforms
Several platforms
Generate a rainbow consisting of the specified colors
ppmrainbow color1 color2 ... >path/to/output_file.ppmIdentifySpecify the size of the output in pixels
ppmrainbow -width width -height height color1 color2 ... >path/to/output_file.ppmIdentifyEnd the rainbow with the last color specified, do not repeat the first color
ppmrainbow -norepeat color1 color2 ... >path/to/output_file.ppmIdentify