Execute command android app

issamux / Android_Shell.java

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// Command need Root permission

InstallBusyBoxCmd = new String [] <

» su » , » -c » ,

» cat /sdcard/busybox > /system/xbin/busybox; » +

» chmod 755 /system/xbin/busybox; » +

» busybox —install /system/xbin «

>;

process = Runtime . getRuntime() . exec( InstallBusyBoxCmd );

// Simple command with no root permission needed,

processCommand = » mkdir /sdcard/tata » ;

process = Runtime . getRuntime() . exec(processCommand);

// Reboot in recovery mode programmatically

String [] str = < " su " , " -c " , " reboot recovery " >;

process p = Runtime . getRuntime() . exec(str);

// Mount system and data parition in RW mode

processCommandList = new String [] < " su " , " -c " ,

» mount -o rw,remount -t yaffs2 /dev/block/mtdblock4 /data; » +

» mount -o rw,remount -t yaffs2 /dev/block/mtdblock3 /system; «

>;

process = Runtime . getRuntime() . exec(processCommandList);

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How to Execute Commands Remotely via SSH in Android?

The SSH protocol uses encryption to secure the connection between a client and a server. All user authentication, commands, output, and file transfers are encrypted to protect against attacks in the network. More often than not you would need to SSH into your cloud Virtual Machines or a remote shell. Usually, we need an SSH client to establish an SSH connection. For Windows, the free (libre) GUI client PuTTY is used for this purpose. Here is how it looks like accessing a remote Linux shell in PuTTY:

The following tutorial illustrates how the same can be achieved in android. Note that we are going to implement this project using the Java language. Library: Apache MINA SSHD

Step by Step Implementation

Step 1: Create a New Project

To create a new project in Android Studio please refer to How to Create/Start a New Project in Android Studio. Note that select Java as the programming language.

Step 2: Adding dependencies

Now we need to add the required dependencies in order to use the apache mina sshd library. Open app/src/build.gradle file in your project directory and add the following under dependencies:

// Adding implementations required for apache mina library

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Is it possible to execute Shell scripts from Android application

I’ve been experimenting with Termux, the Android terminal emulator.

It is an excellent application that allows access to the Android operating system without requiring root access.

What I would like to be able to achieve is execute scripts/commands within Termux from within another Android application installed on the same device.

I believe Termux used to allow Tasker tasks to be executed via intents, however this doesnt appear to be the case now.

Is it possible to execute a script of set of commands via Termux (or any other such app) from another Android application.

Is it possible to access the underlying Android operation system and execute scripts from within an Android app?

When I execute this code from my Android application

I get this error message

However com.termux can execute commands like this. How do I get permission to execute these commands in my applicatgion?

2 Answers 2

So far as I have tried, it works. I think it is supposed to, because that is how many Linux GUI apps do some of their work, by issuing shell commands.

To make sure, I tried issuing a vanilla command’s output over to Logcat on an old, low-end, unrooted Android 6.0 phone, and it worked (working code below).

However, your mileage might vary wildly here. With so many Android manufacturers, I would expect different versions of the command shell on different devices, and thus I wouldn’t expect every Android device to be able to run just any command I threw at it, unless it’s a really common one.

Besides, you might also run into problems with system permissions with the commands themselves rather than the command shell (ie. busybox: Permission denied ).

Termux is a terminal emulator but doesn’t have access to everything in the Android OS. Eventually its an app and will face restrictions as any other app does in the Android. APT , pkg and other package installers or packages are installed within the emulator but not as system wide. Also certain commands will have restrictions similar to your case for example pm can only be executed with root or an adb shell since their user IDs are allowed to perform such actions while other apps are not. Meaning running the command pm install -r -t someapp.apk will give an error in Termux while it would certainly work if using adb shell or having root permissions.

To make things even more clear, running the command echo $PATH in Termux will show directories whose Termux commands are only included, and they are not Android OS commands but compiled packages that can run on Android OS. It is a nice way of like running things on top Android without having to deal with a lot of restrictions, more like a sand-boxed environment. Installing certain packages that need to go out of the sandbox will face issues so be mindful of that.

Not the answer you’re looking for? Browse other questions tagged android bash shell sh or ask your own question.

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Running own executable on Android shell

I need a specific command line tool and I have made a C program in my Linux shell. I have compiled the program with an ARM cross-compiler. I have then moved the program into the Android file system and tried to run it.

The output is permission denied.

What do I have to do, in order to run my own compiled programs in Android file system?

2 Answers 2

I assume that you used adb push for uploading your executable to the sd-card. Unfortunately the sd-card is always mounted with «noexec» which means that you can’t execute anything from here.

Therefore you have to copy the executable to the local filesystem, e.g. to /data/local. In case the device is not rooted or you don’t have BusyBox installed there will be no «cp» command. You can simply use cat: cat /sdcard/myprog > /data/local/myprog .

Then you have to set the executable permission on the executable. Chmod on android usually does not support the «u+x» syntax. Therefore you have to call chmod 555 /data/local/myprog .

Afterwards you can execute your executable: /data/local/myprog .

Alternatively the directory /data/local/tmp can be used. Via adb shell you have full access in this directory. On modern devices (Android 11+) apps can’t list files from this directory, but they are still able to execute executables from there if you provide the full path of the executable.

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Android Studio : How to uninstall APK (or execute adb command) automatically before Run or Debug?

Now I need to uninstall the App every time before Run\Debug it in Android Studio. Because I need to re-create the database before I run \debug the app. I know I can run the command

in terminal to clear the files under /data/data/[package_name] . But it’s not convenient way if I have to execute the command every time. I hope the

command can be executed automatically when I click Run\Debug button.

10 Answers 10

can be used to uninstall an app via your PC. If you want this to happen automatically every time you launch your app via Android Studio, you can do this:

1. In Android Studio, click the drop down list to the left of Run button, and select Edit configurations.
2. Click on app under Android Application, and in General Tab, find the heading ‘Before Launch’
3. Click the + button, select Run external tool, click the + button in the popup window.
4. Give some name (Eg adb uninstall) and description, and type adb in Program: and uninstall in Parameters:. Make sure that the new item is selected when you click Ok in the popup window.

Note: If you do not have adb in your PATH environment variable, give the full path to adb in Program: field (eg /home/user/android/sdk/platform-tools/adb).

List the packages by:

Review which package you want to uninstall and copy the package name from there. For example:

and you are done.

at the end of the above command can help narrow down the list. For example, to find the Google Maps package, you can use adb shell pm list packages | grep -i map .

If you want to uninstall when connected to single device/emulator then use below command

else with multiple devices then use below command

This command with —user 0 do the job:

I am using Android Studio 2.1.2 . I had same requirement as OP. Though above two answer seemed to help everyone, it did not work for me . I am sharing what worked for me.

Go to main menu/Run/Edit Configuration . Select app under Android Application on the left.This should open multi-tabbed pane . Select General tab ( would be default), click green + sing at the bottom ( below text Before launch: Gradle -awake . ).

A drop down will appear, select Gradle-aware-make option. Another text box will pop up. enter :app:uninstallAll in this text box . (You can use ctrl + space to use autocomplete todetermine right target without typing everything . And also helps you choose the right app name that is avaiable for you). and set apply/ok . Relaunch your app.

Note : Every time you launch your app now , this new target will try to uninstall your app from your emulator or device. So if your testing device is not available, your launc will probably fail while uninstalling but will continue to start your emulator. So Either start your emulator first, or re-lauch after first fail again ( as first launch will start emulator though uninstall fails).

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