adb kill all emulators with code examples

ADB (Android Debug Bridge) is a versatile tool that provides developers and advanced users with access to the inner workings of an Android device. One of the most useful features of ADB is the ability to “kill” all emulators at once using a single command. In this article, we’ll explore the benefits of using this command, how to use it, and provide some code examples to get you started.

Why kill all emulators at once?

As a developer, you may be testing your app on multiple emulators simultaneously. However, as you may have experienced, sometimes your emulator may freeze, become unresponsive, or simply stop working. In such cases, you may find yourself having to close each emulator instance one-by-one, which can be time-consuming and frustrating.

That’s where the ADB command “kill-all” comes in handy. By using this command, you can instantly shut down all running emulators at once, saving you time and effort.

How to use ABD kill-all command?

Before we dive into the code examples, let’s first go over the basic syntax for using the ADB kill-all command. The following is an example of how to use the command:

$ adb kill-all

This command will stop all running emulators on your device. Note that this command will also terminate any processes currently running on the device, so use it with caution.

Code examples

Now that you know how to use the ADB kill-all command, let’s dive into some code examples.

Example 1: Killing emulators in Android Studio

If you’re a developer who uses Android Studio, you can use the following code snippet to add a “kill-all” button to your toolbar. This will allow you to kill all running emulators with just one click.

  1. Open the Android Studio app and go to the “Run” menu.
  2. Select “Edit Configurations.”
  3. Click the “+” button to create a new configuration and select “Android App.”
  4. Under the “General” tab, give your configuration a name, such as “Kill-all.”
  5. Under the “Before launch” section, click the “+” button and select “Gradle-aware Make.”
  6. In the “Tasks” field, enter the following command:
:app:clean && :app:assembleDebug && adb kill-all

This command will clean your project, assemble a debug build, and then run the ADB kill-all command.
7. Click “OK” to save your configuration.
8. Over on the toolbar, click “Run,” then select “Edit Configurations.”
9. Find your new “Kill-all” configuration and select the checkbox to add it to your toolbar.
10. Click “OK” to save your changes.

Now you can click the “Kill-all” button whenever you need to stop all running emulators on your device.

Example 2: Killing emulators on the command line

If you prefer to work on the command line, you can use the following bash script to kill all emulators at once:


echo "Killing all emulators..."
adb devices | grep emulator | cut -f1 | while read line; do adb -s $line emu kill; done
echo "Done."

This script will first check for any running emulator instances and then terminate them one-by-one. To use this script, copy the code above into a new file called “” and save it to your preferred directory. Then, navigate to that directory in the command line and use the following command to run the script:

$ bash ./


The ADB kill-all command is a powerful tool that can save you time and effort when working with multiple emulators. Whether you’re using Android Studio or the command line, there are many ways to incorporate this command into your workflow. We hope this article has given you the knowledge and inspiration to get started using ADB kill-all to improve your development efficiency.

  1. ADB:

ADB (Android Debug Bridge) is a command-line tool that is included in the Android SDK. It allows developers and advanced users to communicate with an Android device via a computer. ADB can be used for a wide variety of tasks, including installing apps, transferring files, debugging apps, and emulating devices. ADB can also be used to access the Android device's shell, which gives developers access to a range of tools and functions for device management and customization.

  1. Android Emulators:

Android emulators are software programs that enable developers to run and test their apps without a physical Android device. They create a virtual Android environment on a computer, complete with hardware and software components, and allow developers to test their apps for various screen sizes, resolutions, and versions of Android. Android emulators are an essential tool for app development and testing as they provide a low-cost and efficient way to create a testing environment. Some popular Android emulators include Android Studio, Bluestacks, Genymotion, and Nox Player.

  1. Killing Processes:

Killing processes is a common task in software development and system administration. It involves terminating running processes on a computer or device to free up system resources and improve performance. In Android development, killing processes is often necessary when testing apps on emulators, as emulators can slow down or freeze due to excessive CPU and memory usage. ADB provides a number of commands for killing processes, including “kill,” “kill-all,” and “kill-server.”

  1. Code Examples:

Code examples are an essential tool for learning and mastering programming concepts and techniques. They consist of blocks of code that demonstrate how to implement specific features or solve specific problems. Code examples come in various forms, including sample code, tutorials, and reference guides. In Android development, code examples are often used to illustrate how to use ADB commands, Android SDK functions and libraries, and programming best practices. Code examples are an indispensable resource for developers of all skill levels, as they provide a practical way to learn and apply new programming skills.

Popular questions

  1. What is the ADB kill-all command used for?

The ADB kill-all command is used to stop all running emulators on your Android device with a single command. This command is useful for developers who are testing their apps on multiple emulators simultaneously as it saves time and effort by shutting down all instances at once.

  1. How do you use the ADB kill-all command?

To use the ADB kill-all command, open your command prompt or terminal window and enter the command "adb kill-all". This will stop all running emulators on your device. Note that this command will also terminate any processes currently running on the device, so use it with caution.

  1. Can you use the ADB kill-all command in Android Studio?

Yes, you can use the ADB kill-all command in Android Studio by adding a “kill-all” button to your toolbar. This can be done by creating a new configuration and adding the command to the “Before launch” section.

  1. Is it possible to kill emulators on the command line?

Yes, emulators can be killed on the command line using a bash script like the one provided in the code examples section of this article. This script checks for running emulator instances and then terminates them one by one.

  1. Are code examples helpful for learning ADB commands?

Yes, code examples can be extremely helpful for learning ADB commands. They provide practical examples of how to use the commands, making it easier to understand their functionality and how to incorporate them into your workflow.



I am a driven and diligent DevOps Engineer with demonstrated proficiency in automation and deployment tools, including Jenkins, Docker, Kubernetes, and Ansible. With over 2 years of experience in DevOps and Platform engineering, I specialize in Cloud computing and building infrastructures for Big-Data/Data-Analytics solutions and Cloud Migrations. I am eager to utilize my technical expertise and interpersonal skills in a demanding role and work environment. Additionally, I firmly believe that knowledge is an endless pursuit.

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