pgmmake
Create PGM image with a uniform gray level.
TLDR
Create PGM image with a uniform gray level (specified as a number between 0 and 1) and the specified dimensions
$ pgmmake [graylevel] [width] [height] > [path/to/output_file.pgm]
Create PGM image with a uniform gray level (specified as a number between 0 and 1) and the specified dimensions