# with this script you can use a linux distrib under android in example raspbian if arm device on a sdcard or USB key
# after running this script you will be able to
# run a apache web server , a ssh server ,perform apt-get upgrade etc ...
# done on meteorit , H6 , LENOVO A10 netbooks, MK802 mini PC ,on galaxy GIO & on geeksphone revolution ( X86 archi)
# final target use microxwin (xserver replacement) any help will be appreciated
# bugs known semaphore handle nok

export PATH=/system/bin
date

montage() {
while read a
  do
   mount -t ext4 $a /u
   if [ -f /u/bin/bash ]
   then return
   fi
  done
}
set -x # line can be removed
umask 0
mount -o rw,remount / # / writable
mount -o rw,remount /system # put writable usefull but not necessary
mkdir /u # my  directory

# try to mount the devices untill /bin found on one of them
ls /dev/block/mmcblk[0-9]p[0-9] /dev/block/sda[1-9] /dev/block/sdb[1-9] | montage        
cd / 
ln -s /u/bin /bin
ln -s /u/usr /usr
ln -s /u/var /var
ln -s /u/run /run
mv /lib /slib # save android /lib ... can have effect on some application
ln -s /u/lib /lib
mv /root /sroot # move /root if exists
ln -s /u/root /root 
mkdir /tmp
rm /etc
mkdir /etc
cd /etc
# some files needs to be copied not linked just do it once
for i in passwd shadow group gshadow subuid subgid
do
  if [ ! -f $i ]
  then cp /u/etc/$i .
  fi
done
# links files maybe you will have to add more 
PATH=/bin:/usr/bin/:/u/sbin:/usr/sbin:/system/bin
export PATH=/bin:/usr/bin:/sbin:/u/sbin:/usr/sbin:/system/bin
export HOME=/root
export SHELL=/bin/bash
export DISPLAY=localhost:0 # if you use an Xserver android application, you can also use an external machine
export LD_LIBRARY_PATH=/lib:/usr/lib:$LD_LIBRATY_PATH # not mandatory but to simplify library search 
cd /etc
ln -s /u/etc/* /etc/.
ln -sf /system/etc/* /etc/.	      # reset comment color in jed */
mkdir  /tmp
ln -s /proc/mounts /etc/mtab # for df linux

mkdir /home # i prefer a separated home
#mount -t ext4 /dev/block/vold/179:3  /home  # "change or comment"
# /**** update your /etc/ssh/sshd_config # put usePam no **/
/usr/sbin/sshd -p 23 # perso
apache2ctl start # perso
mknod /dev/fb0 c 29 0 # needed for Xserver on some machines 
PS1='->'
TZ=MET
export TZ PS1
set -x 
if [ `ps |grep 'recovery.sh'` ]
then exit 0
fi
cd
df /u
pwd
mv /sbin /sbin2
ln -s /u/sbin /sbin
stty erase ^H
echo $DISPLAY
echo "do you want to set DISPLAY (y/n) ?"
read a
if [ "$a" = "y" ]
then 
 echo "IP of your remote display"
 read b
export DISPLAY="$b:0"
fi
exec  /bin/bash --rcfile .bashrc
# ' ' contact me on jean.michel.78@gmail.com if needed i don't bite
# add users handling on android for sshd 
# if this script is not successfull => no access to linux distribution 
# but no effect on android