一键制作linux

#!/bin/bash

#:Title: construction.sh

#:Path:/tmp/myscript/mklinux

#:Synopsis:

#:DateTime:2011-08-04 16:24:51

#:Version:Unknow

#:Author: redhat_hu

#:Option:None

read -p "please input the disk name:" DISKNAME

if fdisk -l $DISKNAME | grep "^$DISKNAME" &> /dev/null;then

        fdisk -l $DISKNAME | grep "^$DISKNAME"

        Adisk=`fdisk -l $DISKNAME | grep "^$DISKNAME" | awk '{print $1}'`

        for I in $Adisk ;do

        if mount | grep "$I" &> /dev/null;then

                mount | grep "$I"

        else

                echo "$I was not mounted."

        fi

        done

fi

function FRESH {

read -p "Continue(y/N)?" CHOISE

case $CHOISE in

y|Y)

for I in $Adisk;do

        if mount | grep "$I" >/dev/null;then

        fuser -km $I

        umount $I

        fi

done

dd if=/dev/zero of=$DISKNAME bs=512 count=1 &> /dev/null

echo '

n

p

1

+50m

n

p

2

+512m

n

p

3

+256m

t

3

82

w' |fdisk $DISKNAME &> /dev/null

partprobe $DISKNAME

sleep 1

mke2fs -j ${DISKNAME}1 &> /dev/null

mke2fs -j ${DISKNAME}2 &> /dev/null

mke2fs -j ${DISKNAME}3 &> /dev/null

return 0

;;

n|N)

return 1

;;

*)

return 2

;;

esac

}

function MOUNT {

        if find /mnt/boot &> /dev/null ;then

        umount /mnt/boot &> /dev/null

        mount $1 /mnt/boot

        else

        mkdir /mnt/boot

        umount /mnt/boot &> /dev/null

        mount $1 /mnt/boot

        fi

        if find /mnt/sysroot &> /dev/null ;then

        umount /mnt/sysroot &> /dev/null

        mount $2 /mnt/sysroot

        else

        mkdir /mnt/sysroot

        umount /mnt/sysroot &> /dev/null

        mount $2 /mnt/sysroot

        fi

}

function INIT {

if find [/mnt/sysroot &> /dev/null || mount|grep "/mnt/sysroot" &> /dev/null];then

        cd /mnt/sysroot

        mkdir -p  {boot,proc,sys,dev,home,root,etc/{rc.d,sysconfig,init.d},bin,sbin,lib,usr/{bin,sbin,lib,include},var/{log,run},tmp,mnt,opt,media}

        chmod -R 1777 /mnt/sysroot/tmp

        touch /mnt/sysroot/etc/inittab

cat > /mnt/sysroot/etc/inittab <

id:3:initdefault:

si::sysinit:/etc/rc.d/rc.sysinit        

l0:0:wait:/etc/rc.d/rc.shutdown

EOF

        touch /mnt/sysroot/etc/rc.d/rc.sysinit

cat > /mnt/sysroot/etc/rc.d/rc.sysinit << EOF

#!/bin/bash

echo -e "\t\tWelcome to \033[31;1mMyLinux\033[0m ..."

   

swapon -a

mount -n -o remount,rw /

mount -n -a

   

/bin/bash

EOF

chmod +x /mnt/sysroot/etc/rc.d/rc.sysinit

        touch /mnt/sysroot/etc/fstab

cat > /mnt/sysroot/etc/fstab << EOF

/dev/sda2                /                      ext3    defaults        0 0

/dev/sda1               /boot                   ext3    defaults        0 0

/dev/sda3 swap swap defaults 0 0

sysfs                   /sys                    sysfs   defaults        0 0

proc                    /proc                   proc    defaults        0 0

EOF

cat > /mnt/sysroot/etc/rc.d/rc.shutdown << EOF

#!/bin/bash

#

sync

sleep 2

sync

sleep 1

umount /dev/sda1

umount /dev/sda2

exec /sbin/halt -p

EOF

chmod +x /mnt/sysroot/etc/rc.d/rc.shutdown

else

        echo "error!"

fi

}

COPYCOMMAND() {

if which $B ;then

        COMMAND=`which $B | grep -o "/.*"`

        PTH=`which $B | grep -o "/.*" |sed "s@\(/[[:alpha:]]*\)/[[:alpha:]]*@\1@g"`

        if find /mnt/sysroot$PTH &> /dev/null;then

        cp $COMMAND /mnt/sysroot$PTH

        else

        mkdir -p /mnt/sysroot$PTH

        cp $COMMAND /mnt/sysroot$PTH

        fi

else

echo "wrong command"

fi

LIBS=`ldd $COMMAND | grep -o "/lib.*" | awk '{print $1}'`

for I in $LIBS;do

        [ ! -e /mnt/sysroot$I ] && cp $I /mnt/sysroot$I

done

}

function KERNEL {

TMPDIR=`mktemp -d /tmp/mylinux`

cd $TMPDIR

zcat /boot/initrd-`uname -r`.img | cpio -id

sed -i 's@echo Scanning and configuring dmraid supported devices@#&@g' init

sed -i 's@echo Scanning logical volumes@#&@g' init

sed -i 's@lvm vgscan --ignorelockingfailure@#&@g' init

sed -i 's@echo Activating logical volumes@#&@g' init

sed -i 's@lvm vgchange -ay --ignorelockingfailure  vol0@#&@g' init

sed -i 's@resume LABEL=SWAP-sda3@#&@g' init

sed -i "s@\(mkrootdev.* \)/.*@\1sda2@g" init

find . | cpio -H newc -o --quiet | gzip -9 > /mnt/boot/initrd.gz

cp /boot/vmlinuz-`uname -r` /mnt/boot/vmlinuz

}

function GRUB {

MOUNTPOINT=`basename $2`

until [ "$MOUNTPOINT" == "boot" ];do

        read -p "please modify the mountpoint." MOUNTPOINT

done

grub-install --root-directory=/mnt $1

cat > $2/grub/grub.conf << EOF

default=0

timeout=10

title mylinux

                root (hd0,0)

                kernel /$3 ro root=/dev/sda2

                initrd /$4

EOF

}

FRESH 

MOUNT ${DISKNAME}1 ${DISKNAME}2

INIT

for B in mingetty swapoff chmod sync sleep clear runlevel reboot sysctl swapon init bash mount umount halt poweroff shutdown ls vi cat; do

COPYCOMMAND

done 

#read -p "input the command,'c' for skip:" B

#until [ "$B" == "c" ];do

#COPYCOMMAND

#read -p "input the command,'c' for skip:" B

#done

KERNEL

GRUB $DISKNAME /mnt/boot vmlinuz initrd.gz

rm -rf $TMPDIR

sync

sync

sync

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