pamtopnm
converts PAM images to PNM format
TLDR
Convert PAM to PNM format
$ pamtopnm [input.pam] > [output.pnm]
Convert discarding alpha channel$ pamtopnm -assume [input.pam] > [output.pnm]
SYNOPSIS
pamtopnm [options] [file]
DESCRIPTION
pamtopnm converts PAM images to PNM (PBM/PGM/PPM) format. If input has alpha channel, it is removed. Part of Netpbm toolkit.
PARAMETERS
-assume
Assume non-alpha interpretation of extra channel.