generating a random 24bit bmp of given resolution

Get github.com/mkf/randombmp.

Usage: make, or: make W=1024 …

It generates a bitmap of:

• width W (default 2048), height H (default 1536),
• source of each one-bit color channel value /dev/$S (S — default urandom)

By:

1. Creating a file out.ppm starting with P6⏎$W $H⏎255
2. H times appending to it W 3-byte blocks from the source using dd
3. Generating file out.bmp from out.ppm using ppmtobmp (default parameters)