pnmtorast
Convert PNM to Sun rasterfile format
TLDR
Convert PNM to Sun raster
$ pnmtorast [input.pnm] > [output.ras]
Specify encoding$ pnmtorast -rle [input.pnm] > [output.ras]
SYNOPSIS
pnmtorast [options] [file]
DESCRIPTION
pnmtorast converts PNM images to Sun Rasterfile format. Part of Netpbm toolkit.
PARAMETERS
-rle
Use RLE compression.-standard
Use standard format.
INSTALL
sudo apt install netpbm
sudo dnf install netpbm
sudo pacman -S netpbm
sudo apk add netpbm
sudo zypper install netpbm
brew install netpbm
nix profile install nixpkgs#netpbm