netboot-slacko.sh

#!/bin/sh
#jamesbond 2011
# convert a puppy iso into netboot-compatible vmlinuz and humongous initrd.gz

Xdialog --title "mknetboot" --msgbox "This script will create a set of files suitable for puppy netbooting.
The input is a puppy ISO file. The output will be located in /tmp/netboot - one vmlinuz and one huge initrd.gz.
If /root/tftpboot/pxelinux.cfg exist, the output files will be symlinked to this directory as well,
so you can use netboot-server to server them straight away." 0 0

ISO=$(Xdialog --title "Choose puppy ISO" -fselect "" 0 0 2>&1 | tail -n 1)

if [ -n "$ISO" ]; then
    rm -rf /tmp/netboot /tmp/netboot_iso
    mkdir -p /tmp/netboot/x /tmp/netboot_iso
    if mount -o loop "$ISO" /tmp/netboot_iso; then
        if [ -f /tmp/netboot_iso/vmlinuz -a -f /tmp/netboot_iso/initrd.gz ]; then
            Xdialog --title "mknetboot" --no-buttons --infobox "This will take a while. Please wait ..." 0 0 60000 &
            PID=$!
            cp /tmp/netboot_iso/vmlinuz /tmp/netboot
            cd /tmp/netboot/x
            zcat /tmp/netboot_iso/initrd.gz | cpio -i
            cp /tmp/netboot_iso/*.sfs .
            find . | cpio -o -H newc | gzip -9 > ../initrd.gz
            cd /tmp/netboot
            rm -rf x
            if [ -d /root/tftpboot/pxelinux.cfg ]; then
                rm /root/tftpboot/pxelinux.cfg/vmlinuz /root/tftpboot/pxelinux.cfg/initrd.gz
                ln -s /tmp/netboot/vmlinuz /root/tftpboot/pxelinux.cfg
                ln -s /tmp/netboot/initrd.gz /root/tftpboot/pxelinux.cfg
            fi
            kill $PID
            Xdialog --title "mknetboot" --infobox "Done. Output is in /tmp/netboot." 0 0 10000
        else
            Xdialog --title "mknetboot" --msgbox "Invalid ISO - cannot find vmlinuz and initrd.gz" 0 0
            rm -rf /tmp/netboot
        fi
        umount /tmp/netboot_iso
        rm -rf /tmp/netboot_iso
    else
        Xdialog --title "mknetboot" --msgbox "Failed to mount $ISO" 0 0
    fi
fi