pgmnoise

Generate white noise. More information: https://netpbm.sourceforge.net/doc/pgmnoise.html.

• Generate a PGM image containing white noise:

pgmnoise {{width}} {{height}} > {{path/to/output.pgm}}

• Specify the seed for the pseudo-random number generator:

pgmnoise {{width}} {{height}} -randomseed {{value}} > {{path/to/output.pgm}}