Provided by: netpbm_10.0-15.3build1_amd64
pbmmake - create a blank bitmap of a specified size
pbmmake [-white|-black|-gray ] width height
Produces a portable bitmap of the specified width and height. The color defaults to white.
In addition to the usual -white and -black, this program implements -gray. This gives a simple 50% gray pattern with 1's and 0's alternating. All flags can be abbreviated to their shortest unique prefix.
Copyright (C) 1989 by Jef Poskanzer. 22 February 1989 pbmmake(1)