tftpboot/scripts/download_debian.sh

#!/bin/bash

# This script do the following:
#	Download Debian Stable (Stretch)
#	Download Debian Testing (Buster)
#	Download Debian oldStable (Jessie)
#	Download Debian oldoldStable (Wheezy)
#	Download Debian Unstable (Sid)
#	Make an PXE's config file (aka menu.cfg)

TFTP_ROOT="/var/lib/tftpboot"

# Config file
CONFIG_PXE="${TFTP_ROOT}/installer/debian/menu.cfg.example"
rm -f ${CONFIG_PXE} && touch ${CONFIG_PXE}

for DISTRO in stretch buster jessie wheezy sid; do # For ALL Debian's version
	for ARCH in amd64 i386; do            # For all classic architecture

		# Create and go into directory
		mkdir -p ${TFTP_ROOT}/installer/debian/${DISTRO}/${ARCH}
		pushd ${TFTP_ROOT}/installer/debian/${DISTRO}/${ARCH}

		# Download files
		wget http://ftp.fr.debian.org/debian/dists/${DISTRO}/main/installer-${ARCH}/current/images/netboot/debian-installer/${ARCH}/linux -O linux
		wget http://ftp.fr.debian.org/debian/dists/${DISTRO}/main/installer-${ARCH}/current/images/netboot/debian-installer/${ARCH}/initrd.gz -O initrd.gz
		popd

		# Config file
		/bin/cat >> "${CONFIG_PXE}" << EOF
label ${DISTRO}${ARCH}
  menu label Debian GNU/Linux ${DISTRO} ^${ARCH} bits
  kernel installer/debian/${DISTRO}/${ARCH}/linux
  append vga=normal initrd=installer/debian/${DISTRO}/${ARCH}/initrd.gz -- quiet
EOF
	done

	# Config file
	/bin/cat >> "${CONFIG_PXE}" << EOF
label separator
  menu label ---
EOF
done

# Config file
/bin/cat >> "${CONFIG_PXE}" << EOF
label mainmenu
  menu label ^Back...
  menu exit
EOF

exit 0