#!/bin/bash
#
# GRML-Inst_Plain_Deb
# 
# "Install (plain) Debian via GRML"-script
#
# Based on the HowTo:
# http://wiki.grml.org/doku.php?id=tips#install_plain_debian_via_grml
#
# by O. La Rosa & P. Richardson - 05-03-2006,
#
# published under the GNU General Public License:
# http://www.gnu.org/licenses/gpl.html
#
# Contact/feedback: 'olr _at_ brlspeak _dot_ net'
# 
# Cf. README for details and/or update-info.
#  
#   It is not only possible to install GRML via grml2hd but to install a
#   plain(!) Debian system via GRML. This might be useful for example if
#   Debian does not boot on your hardware while GRML does. This is possible
#   via running debootstrap (or cdebootstrap). You need network access for
#   downloading the Debian packages and at least ~500MB of free harddisk
#   space. P. Richardson and I wrote this script to help you with installing
#   such a plain Debian very easily. Hope this helps!
#   Osvaldo La Rosa.
#

# Variables:
# - Debian mirror-site:
#MM="ftp://ftp.tugraz.at/mirror/debian"
MM="http://http.us.debian.org/debian"

KIM="kernel-image-2.6.8-2-386"
#KIM="kernel-image-2.6.8-2-686"
#KIM="kernel-image-2.6.8-2-686-smp"
#KIM="kernel-image-2.6.8-2-k7"
#KIM="kernel-image-2.6.8-2-k7-smp"

# Functions:
stepcounter () {
STEP=$((STEP + 1))
echo "
-- step $STEP --"
}

# Running grml-inst_plain_deb:
setleds +num
clear
echo "Running grml-inst_plain_deb . . .

 "

echo "  Current defaults:
  Debian mirror-site = $MM
  Kernel = $KIM
 

 "

echo -ne "Press ENTER to continue, CTRL+C to abort ..."
read

clear
# Lets GRML detect our partitions
partprobe 2> /dev/null
fdisk -l | grep Linux$

stepcounter
until
read -p"Specify hdXX: you want to install Debian Sarge on partition /dev/" PP
[ -b /dev/$PP ]
do
echo -e "error\a"
done
until
read -p"Specify hdYY for a separate home partition. Hit enter to use the same as / /dev/" HP
[ -b /dev/$HP ] || [ -z $HP ]
do
echo -e "error\a"
done

echo -e "\a"
echo -ne "It will erase all selected partitions. Press ENTER to continue or CTRL+C to abort ..."
read

stepcounter
echo "Making an EXT3 filesystem on /dev/$PP"
mkfs.ext3 /dev/$PP

stepcounter
if ! [ -d /mnt/test ]; then mkdir /mnt/test ; fi
echo "Mounting the new partition on /mnt/test"
mount -t ext3 /dev/$PP /mnt/test

stepcounter
echo "Now running debootstrap and getting main packages from Debian-mirror:"
debootstrap sarge /mnt/test $MM

stepcounter
echo "Mounting /proc ..."
mount -t proc none /mnt/test/proc

stepcounter
if [ -b /dev/$HP ]
then
echo "Making an EXT3 filesystem on /dev/$HP"
mkfs.ext3 /dev/$HP
echo "Creating fstab entry"
FSTBHP="/dev/$HP	/home	ext3	defaults	0	0"
echo "Mounting /home partition"
mount -t ext3 /dev/$HP /mnt/test/home
fi

stepcounter
### Trying to detect a swap partion"
#SP=$(cat /proc/swaps | awk '/partition/{ print $1}')
SP=$( fdisk -l | awk '/Linux swap/{ print $1}' | tail -n1 )

### If exists ...
if [ -b $SP ]
then
echo "Found $SP"
mkswap $SP
### If not, we create a file based swap.
else
SizeOfSwap=$(cat /proc/meminfo | grep MemTotal | awk '{ print $2 }')
echo "Making a $SizeOfSwap kbytes Swap file on /dev/$PP"
SP="/.swp"
dd if=/dev/zero of=/mnt/test$SP bs=1024 count=$SizeOfSwap
mkswap /mnt/test$SP
chmod 600 /mnt/test$SP
fi

stepcounter
echo "Creating fstab ..."
mkdir /mnt/test/media/floppy
mkdir /mnt/test/media/cdrom
cat > /mnt/test/etc/fstab << CONFIGFSTAB
/dev/$PP	/	ext3	defaults	0	1
/proc		/proc	proc	defaults	0	0
$SP		none	swap	sw		0	0
$FSTBHP
/dev/fd0         /media/floppy   auto    noauto,rw,sync,user,exec 0    0
/dev/cdrom       /media/cdrom    iso9660 noauto,ro,user,exec      0    0
CONFIGFSTAB

stepcounter
echo "Extracting hard disk name"
HD=${PP:0:3}
echo "Using $HD"
echo "Creating /dev/$HD for GRUB"
cd /mnt/test/dev ; ./MAKEDEV -v $HD ; cd -

stepcounter
echo "Installing grub and a kernel ..."
echo "do_initrd = Yes" >> /mnt/test/etc/kernel-img.conf
echo "deb $MM stable main" > /mnt/test/etc/apt/sources.list
chroot /mnt/test apt-get update
chroot /mnt/test apt-get install -y $KIM                              
chroot /mnt/test apt-get install -y grub discover udev

until
read -p"Specify hdXX if you don't want grub to be installed on your Hard disk's MB (expert), hit enter to continue /dev/" GP
[ -b /dev/$GP ] || [ -z $GP ]
do
echo -e "error\a"
done
echo "Installing Grub."
if [ -z $GP ]
then
GP=$HD
fi
grub-install --root-directory=/mnt/test /dev/$GP
chroot /mnt/test update-grub -y

stepcounter
echo "Making a basic DHCP network configuration"
echo "Extracting network interface name"
NETIF=$(ifconfig | awk '/HWaddr/{print $1}')
echo "Using $NETIF"
cat > /mnt/test/etc/network/interfaces << CONFIGNET
auto lo
iface lo inet loopback

auto $NETIF
iface $NETIF inet dhcp
CONFIGNET

stepcounter
echo "Keyboard configuration"
chroot /mnt/test/ dpkg-reconfigure console-data

stepcounter
echo "Installing a few packages"
chroot /mnt/test apt-get install locales

#If brltty is present on GRML, we install the package.Thanks to William Windels
ps -A | grep brltty
if [ $? -eq 0 ]
then 
chroot /mnt/test apt-get install brltty 
else
echo "brltty is not present"
fi

stepcounter
echo "Running base-config"
#Be sure to be in stable version
chroot /mnt/test echo "set mirror/suite stable" | chroot /mnt/test debconf-communicate
mknod /mnt/test/dev/ptyp0 c 2 0
mknod /mnt/test/dev/ttyp0 c 3 0
chroot /mnt/test base-config

stepcounter
echo "Configuring hosts file"
HN=$(hostname)
echo $HN > /mnt/test/etc/hostname
cat > /mnt/test/etc/hosts << CONFIGHOSTS
127.0.0.1	localhost	localhost.localdomain	$HN
CONFIGHOSTS

stepcounter
echo "Adding a few modules"
cat > /mnt/test/etc/modules << CONFIGMODULES
pcspkr
lp
floppy
ide-cd
ide-disk
ide-generic
mousedev
CONFIGMODULES

stepcounter
echo "Unmounting proc ..."
umount /mnt/test/proc                             
echo "Unmounting partition ..."
umount /mnt/test

stepcounter
echo "
ENTER to reboot, CTRL+C to reboot later ..."
read

stepcounter
echo "

Rebooting . . .
 "
reboot

#
# End of script.