Backup My Android Web UI

#!/bin/bash

if [[ $EUID -ne 0 ]]; then
    sudo $0
    exit
fi
tar="/sdcard/wwwui_`date +%s`.tar"

adb shell "rm /sdcard"
adb shell "mkdir /sdcard"
adb shell "mount /dev/block/mmcblk1p1 /sdcard"

adb shell "mount /dev/block/mmcblk0p23 /system"

adb shell "tar -cf $tar /system/etc/www.conf /system/etc/www"
adb pull $tar