Get Debian (or Ubuntu) netboot installer files for multiple distributions

get-d-i.sh

#!/bin/sh

#
# [email protected]
#

# get-d-i.sh ftp.debian.org/debian/{lenny,squeeze} archive.ubuntu.com/ubuntu/lucid


for i in $*; do
  IFS=/ read h d v <<EOF
$i
EOF

  for j in amd64 i386; do
    mkdir -p $d-installer.$v
    mkdir -p $d-installer.$v/.$j

    cd $d-installer.$v/.$j

    wget -q http://$h/$d/dists/$v/main/installer-$j/current/images/netboot/netboot.tar.gz && tar zxf netboot.tar.gz

    cd ..

    if [ -e $d-installer/$j ]; then
      rm -r $d-installer/$j
    fi

    cp -r .$j/$d-installer/$j .
    rm -r .$j

    # Rewrite paths that reference the installer directory.
    find $j/pxelinux.cfg $j/boot-screens -follow -type f | xargs \
      sed -i "s/$d-installer\//$d-installer\.$v\//"

    cd ..
  done
done