Android app push to device system directory

The command prompt adb shell can install Android apps under System on a device that has already been rooted.

Here's how to push the app directly to the/system/app folder

The main steps are as follows:

1. ADB devices

2, ADB remount//re-installed in the system file, the device to read and writable

3. ADB push .... apk/system/app/

Because the ADB remount often appears remount failed:operation not permitted, the steps for Remount success are as follows 3-11.

The detailed steps are as follows:

1, ADB devices//First connect the device to the computer

2. ADB shell//Enter Shell mode

3. Mount//Get the mount point of the system, such as/dev/block/mmcblk0p22/system

4, SU//due to mount system partition read and write operation must be under root authority, so the device must obtain root

5. Mount-o Remount,rw/dev/block/mmcblk0p22/system (mount point of System)//Reinstall root directory by Mount command modify read and write rights

6, chmod 777/system//Modify the permissions of the system, become readable and writable

7. CD System//Enter system

8. chmod 777 App//This is the right to modify the app folder under System

9. CD app//Enter app

10. Exit

11. Exit

12. ADB push .... apk/system/app/

Detailed Step Analysis:

One, Mount command: Mount [-R] [-W] [-O options] [-t type] Device directory

0) Mount-o remount: Re-mount the root directory

1)-R/w: Installs the file system as read-only/writable mode

2)-O options: Describes how devices or files are hooked up

Loop: Attach a file as a hard disk partition hook up system

RO: Hook device with read-only method

RW: Mount device with read-write mode

Iocharset: Specifies the character set used to access the file system

3)-T type: Specifies the file system type (usually without specifying, mount will automatically select the correct type)

4) Device: devices to mount Mount

5) Directory: The device hangs on the system node

Second, chmod 777:chmod ABC file

Under the UNIX operating system, file or directory permission control is distinguished by reading, writing, and executing 3 of the general permissions.

The permission ranges are as follows:

U:user----file or directory owner

G:group----file or directory belongs to a group

O:other----A file or directory owner or other user range other than the owning group

A:all---All Users

The permission code is indicated as follows:

R:read----Read permission/number code "4"

W:write----Write permission/number code "2"

X:execute----Execute Permissions/number code "1"

-: No permission/number code "0"

S:special----Special permissions (change permissions)

Permission statements consisting of permission ranges and permission codes are represented as follows:

-ABCABCABC (e.g.-rwxrwxrwx)

Where: The first "-" represents the type, ABC is represented as a permission range of three classes (A=user b=group c=other/corresponding permissions r=4 w=2 x=1)

such as chmod 777./indicates that this directory is set to anyone readable writable executable

Android app push to device system directory