pgmtopgm
copies PGM images, normalizing format
TLDR
Copy PGM image
$ pgmtopgm [input.pgm] > [output.pgm]
SYNOPSIS
pgmtopgm [file]
DESCRIPTION
pgmtopgm copies PGM images, normalizing format. Functions as a no-op filter in pipelines. Part of Netpbm toolkit.