讓Ubuntu和Android同時運行（Ubuntu on Android）

Ubuntu目前有個項目叫Ubuntu for Android（http://www.ubuntu.com/devices/android），看起來非常cool：

它的原理在http://www.ubuntu.com/devices/android並無介紹。但是我們猜測可以用chroot配合實現一個最簡單的Ubuntu for Android。

我們為Andriod編寫一個腳本Ubuntu.sh，在該腳本中啟動Ubuntu的文件系統，透過chroot進行：

1. #!/system/bin/sh
3. if [ `id -u` != "0" ]
4. then
5. echo -e "\033[33m Becoming root \033[0m"
6. su -c bu
7. exit 1
8. fi
10. echo -e "\033[33m Setting some stuff up..\033[0m "
12. export bin=/system/bin
13. export mnt=/data/local/ubuntu
14. export PATH=$bin:/usr/bin:/usr/sbin:/bin:$PATH
15. export TERM=linux
16. export HOME=/root
18. if [ ! -d $mnt ]
19. then
20. mkdir $mnt
21. fi
23. echo -e "\033[33m Mounting the Linux Image \033[0m"
25. #replace /dev/block/mmcblk1p2 by the partition Ubuntu image is replaced
26. #it might be a loop image
27. busybox mount -t ext4 -o noatime,nodiratime /dev/block/mmcblk1p2 $mnt
28. busybox mount -t devpts devpts $mnt/dev/pts
29. busybox mount -t proc proc $mnt/proc
30. busybox mount -t sysfs sysfs $mnt/sys
32. echo -e "\033[33m Setting Up Networking\033[0m"
34. sysctl -w net.ipv4.ip_forward=1
35. echo "nameserver 8.8.8.8" >> $mnt/etc/resolv.conf
36. echo "nameserver 8.8.4.4" >> $mnt/etc/resolv.conf
37. echo "127.0.0.1 localhost" > $mnt/etc/hosts
39. echo -e "\033[33m Mounting sdcard in /mnt/sdcard\033[0m"
40. if [ ! -d $mnt/mnt/sdcard ]
41. then
42. mkdir $mnt/mnt/sdcard
43. fi
45. busybox mount --bind /mnt/sdcard/ $mnt/mnt/sdcard
47. echo -e "\033[33m Entering CHROOT \033[0m"
48. echo " "
50. chroot $mnt /bin/bash
52. echo " "
53. echo -e "\033[33m Shutting down CHROOT\033[0m"
54. echo -e "\033[33m umount $mnt/mnt/sdcard\033[0m"
55. busybox umount $mnt/mnt/sdcard
56. sysctl -w net.ipv4.ip_forward=0
57. echo -e "\033[33m umount $mnt/dev/pts\033[0m"
58. busybox umount $mnt/dev/pts
59. echo -e "\033[33m umount $mnt/proc\033[0m"
60. busybox umount $mnt/proc
61. echo -e "\033[33m umount $mnt/sys\033[0m"
62. busybox umount $mnt/sys
64. echo -e "\033[33m umount $mnt\033[0m"
65. busybox fuser -k $mnt
66. busybox umount $mnt

1. busybox mount -t ext4 -o noatime,nodiratime /dev/block/mmcblk1p2 $mnt

sudo rootstock -f ubuntu -l <yourname> -p <yourpassword> -i 1G --seed linux-image-omap,build-essential,tightvncserver, lxde

將得到的tgz包解壓到我們sd卡的分區2。

運行Ubuntu.sh，進入到了Ubuntu的根文件系統，並執行了bash，之後我們開一個vncserver：

1. export USER=root
2. vncserver -geometry 800x480

在Android端，通過VNCClient軟件連接到127.0.0.1:5901即可。