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How to Control Android Wakelocks from ADB Shell

Acquire and release Android power wakelocks forcefully from ADB shell: use cmd wakelock acquire, inspect /sys/power/wake_lock, and debug battery drain.

Change the Default Search Engine and Keyword Shortcuts in Google Chrome

Google Chrome allows users to change the default search engine used in the address bar (omnibox). You can switch to privacy-focused engines like DuckDuckGo or set up custom keyword shortcuts to search specific documentation sites directly from the omnibox.

Inspect Wireless Networks on Linux Using iwlist

The iwlist command-line utility displays detailed diagnostic information from wireless network interfaces on Linux. It allows developers and sysadmins to scan for nearby access points, inspect signal quality, check operating frequencies, and verify encryption schemes without needing a graphical de

How to Handle Android Button Click Events in Kotlin

Handle Android button clicks in Kotlin: master setOnClickListener, ViewBinding binding.btnSubmit, Toast notifications, and lambda listeners.

Deduplicate and Sort Email Lists with Linux Command Line Tools

Cleaning raw logs or subscriber export files to get a unique list of email addresses is a common data cleanup task. Rather than importing large files into spreadsheets or writing custom scripts, standard Linux terminal utilities like grep , tr , sort , and uniq can extract and deduplicate thous

Mastering Android PowerOff: Decode AOSP Shutdown Secrets!

The Android Open Source Project (AOSP) provides the foundation for understanding the inner workings of Android systems. … Read more

Tracing the Android OS Power-Off & Shutdown Sequence

Trace the Android OS power-off shutdown sequence in AOSP: inspect ShutdownThread.java, PowerManagerService, init reboot property, and kernel halt.

How to Set Up MiniDLNA Media Server on Ubuntu Linux

Set up a lightweight MiniDLNA (ReadyMedia) server on Ubuntu: configure /etc/minidlna.conf media folders, port 8200, systemctl service, and DLNA clients.

How to Use Chrome Custom Tabs in Android (Kotlin)

Open web links faster in Android apps using Chrome Custom Tabs in Kotlin: replace heavy WebViews, customize toolbar colors, and enable warm-up bindings.

Essential Online Developer Tools & Utility Bench

Curated developer utility tools: test JSON formatters, regex testers, SQL beautifiers, mock API generators, and cron expression evaluators online.

Mastering cURL: How to Perform HTTP GET and POST Requests with JSON and XML Data

When it comes to interacting with APIs or web servers, cURL is an incredibly powerful and versatile … Read more

Implement writable nested model serializer (Json object in another JSON object) for Django REST Framework

As we mentioned in the title of this post, the purpose of this post is to demonestrate … Read more

How to Set HTTP Status Codes in Django Responses

Set REST HTTP status codes in Django and DRF responses: use status.HTTP_200_OK, HTTP_201_CREATED, HTTP_400_BAD_REQUEST, and HTTP_404_NOT_FOUND.

Solved – Failed to connect to android.googlesource.com port 443: Connection timed out

Recently we switch our internet leased line provider and after that the provider did some configurations to … Read more

Fix Django OperationalError: no such table

Fix django.db.utils.OperationalError: no such table: run python manage.py makemigrations and migrate, inspect database state, and fix migration sync.

Version 28 (intended for Android Pie and below) is the last version of the legacy support library

If you want your application to be compatible with latest Android Version Q with API level 29, … Read more

Enable SSH login using WHM in VPS hosting

If you want to enable SSH access to user other than root, you will need to login … Read more

Easily Identify HTTP Request and Response Headers Online

When working with web development, understanding HTTP request and response headers is crucial. These headers carry essential … Read more

In order to allow non-dict objects to be serialized set the safe parameter to False – Fixed

When developing a Django REST API, you might encounter the error: “In order to allow non-dict objects … Read more

Create Data Filters and Filter Views in Google Sheets

Google Sheets filters allow you to isolate specific dataset rows by criteria—such as task priority, assigned team member, or due date—without modifying underlying cell data. Set up your task tracking columns Structure your data with a clean header row in row 1.