#!/bin/bash
#################################################################################################################
#					   							 		#
# 		B!n@ry kcompile [Kernel Compilation Script] v0.1 :-D					 	#
#					   							 		#
#					   							 		#
# 	1- Downloads a required Kernel version from: http://www.kernel.org/pub/linux/kernel/v2.6/ 		#
#	2- Select weather to create your own config file or use the old config file to Compile the new Kernel	#
#	3- Compile the new Kernel and its Modules								#
#	4- Install the new Kernel or Add entries to the Grub configuration file				  	#
#														#
# Back2Track, as I always say: Linux rul3z ...			 						#
# 				Binary@linuxac.org		 						#
#					   							 		#
#	Script Debugged by: Dj.r4iDeN   			 						#
#														#
#################################################################################################################
# Howto use:							 						#
# ----------						 	 						#
# 1- Add kcompile to ~/HOME/bin					 						#
# 2- Run chmod u+x kcompile					 						#
# 3- Open ~/HOME/.bashrc and ADD PATH=~/HOME/bin:$PATH	 	 						#
# 4- If you do not want to logout run source ~/HOME/.bashrc	 						#
#    Note: If you logout no need for previous step						 		#
# 5- run from Terminal by printing kcompile							 		#
#################################################################################################################

# Function to copy old configuration file
function configfile()
{
	# Use current Config to Build new KERNEL
	CURRENTCONFIG = uname -r;

	# Copy current config file
	cp /boot/config-$CURRENTCONFIG .config

}; # End Of Funtion configfile

# Create RAMDisk function
function ramdisk()
{
# Create Initial RAMDisk
# Check which tool is installed? 
# mkinitrd or mkinitramfs
echo "What is your systems package manager?";
echo "Select (1) for RPM";
echo "Select (2) for DEB ?";
read PKGMAN;
if test $PKGMAN -eq 1
then
	mkinitramfs -o /boot/initrd.img-$KERNELVERSION;
elif test $PKGMAN -eq 2
then
	mkinitrd /boot/initrd.img-$KERNELVERSION $KERNELVERSION
else
	echo "Sorry NO such selection";
	ramdisk;
fi;
}; # End Of Funtion ramdisk


# Goto source directory
#cd /usr/src;

echo "Please enter kernel version to download";
read KERNELVERSION;

# Get the latest Linux from here: http://www.kernel.org/pub/linux/kernel/v2.6/
# example: http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.19.2.tar.gz;

echo "What file archive do you want to download?";
echo "(1) bz2 archive (less size)";
echo "(2) gz archive (bigger size)";
read CHOICE;

if $CHOICE = 1
then
	# Download the kernel source file	
	wget -c http://www.kernel.org/pub/linux/kernel/v2.6/$KERNELVERSION.bz2;
	# Extract Kernel Source files
	tar jxvf $KERNELVERSION;
	# Enter kernel source directory
	cd $KERNELVERSION;
else
	# Download the kernel source file		
	wget -c http://www.kernel.org/pub/linux/kernel/v2.6/$KERNELVERSION.gz;
	# Extract Kernel Source files
	tar zxvf $KERNELVERSION.gz;
	# Enter kernel source directory
	cd $KERNELVERSION;
fi;

#####################################################
# Check what config file to use during the Kernel Compilation
echo "Do you want to use current config file";
echo "(Y)es 	or 	(N)o	?";
read CHOICE2;
if $CHOICE2 == [Y|y]
then
	# Read current config file	
	configfile;
	# Start Kernel Compilation using old config file
	make oldconfig;
else
	# Start menuconfig to build your own config file used for Compilation	
	make menuconfig;
	# Start Kernel Compilation using your build config file
	make;
fi;

#####################################################

# Clean miscellaneous object files
clear; 
echo "Now we shall clean miscellaneous object files";
sleep 2;
make clean;

# Start the actual Kernel Build
clear;
echo "Now we shall Start the actual Kernel Build";
sleep 2;
make bzImage;

# To build the modules
clear;
echo "Now we shall build the modules";
sleep 2;
make modules;

# Install the new modules
clear;
echo "Now we shall Install the new modules";
sleep 2;
make modules_install;

# Install the new kernel
clear;
echo "Now we shall Install the new kernel";
sleep 2;
make install;

# Create RAMDisk
clear;
echo "Now we shall Create RAMDisk";
sleep 2;
ramdisk;

exit 0;
# EOF