pbmtox10bm
converts PBM bitmaps to X10 bitmap format, which predates the current X11
TLDR
Convert PBM to X10 bitmap format
$ pbmtox10bm [input.pbm] > [output.xbm]
SYNOPSIS
pbmtox10bm [file]
DESCRIPTION
pbmtox10bm converts PBM bitmaps to X10 bitmap format, which predates the current X11 bitmap format. Part of Netpbm toolkit.
INSTALL
sudo apt install netpbm
sudo dnf install netpbm
sudo pacman -S netpbm
sudo apk add netpbm-extras
sudo zypper install netpbm
brew install netpbm
nix profile install nixpkgs#netpbm