Developing REST API using functions in DRF application views
This post is in continuation with our previous post “Developing first REST API using Django Rest Framework … Read more
Lynxbee topic
lynxbeedev
Convert Byte Array to Hex using Java
The post briefs above how you can convert byte Array to Hex values and print those on … Read more
Create and Secure a Django Admin Account
Create a Django administrator without leaking credentials or weakening password validation. Then verify the account, recover access safely, understand staff versus superuser privileges, and troubleshoot the admin login in development and production.
Protect the DRF API Root with Login and Permissions
Adding a Login link to Django REST Framework’s browsable API does not protect an endpoint. This walkthrough combines session authentication with an explicit permission policy, verifies anonymous and logged-in behavior, and closes the production security gaps beginners often miss.
Design Your First Django Model and Migration
A Django model is more than a Python-shaped table definition: it establishes database constraints, application validation, relationships, query paths, and migration history. This example builds a small publishing model and verifies each layer.
Understanding pcap file format – part I – Global Header
The file must begin with a Section Header Block. Below is typical configuration, with a single Section Header … Read more
Sending AVTransport commands to UPNP DMR using command line
If you are working on developing DMR (Digital Media Renderer) or DMC ( Digital Media Controller) for … Read more
Run OpenGrok Code Search on Ubuntu
The old Java 8, Tomcat 8, and Snap ctags recipe no longer matches OpenGrok’s requirements. This deployment uses the maintained official container, pins a release, keeps source read-only, persists index data, binds locally, and explains indexing and upgrades.
Solved: java.lang.UnsatisfiedLinkError: no hello in java.library.path
When we were developing the JNI example as mentioned in our another post, “Java Native Interface ( … Read more
Call C from Java with JNI on Linux
This modern JNI example replaces removed `javah` instructions with `javac -h`, derives the active JDK include path, compiles position-independent C into a shared library, and verifies both the exported symbol and Java-to-native call.
Install Java using apt-get command on Ubuntu
Installing JAVA on ubuntu can be done using following easiest command. for Ubuntu 20.04, this command installs … Read more
Measure Network Throughput using iperf
iPerf3 is a tool for active measurements of the maximum achievable bandwidth on IP networks. It supports … Read more
Find and Fix Broken Links in WordPress
A broken-link report is a triage queue, not a delete list. This workflow chooses an appropriate scanner, validates ambiguous results, repairs the source or redirect, preserves intentional removals, and verifies the rendered site.
Store Marathi, Kannada ( Indian languages ) in MySQL database
One of our website which we had started is developed using PHP and uses MySQL as database. … Read more
Change MySQL Collation Safely in phpMyAdmin
Changing a database default affects newly created objects; it does not automatically rewrite existing table columns. This workflow audits every level, explains collation semantics, backs up first, converts only when needed, and verifies application behavior.
Fix “sudo: unable to resolve host” on Ubuntu
This warning usually means the machine’s active hostname no longer resolves through its configured Name Service Switch sources. Diagnose the exact name first, correct `/etc/hosts` or hostname configuration safely, and verify through `getent` before changing DNS.
Install Gerrit on Linux / Ubuntu
Gerrit is a free, web-based team code collaboration tool. Software developers in a team can review each … Read more
Install Gitiles – Browser for Git repositories
Gitiles is a simple repository browser for Git repositories, built on JGit. Its guiding principle is simplicity: … Read more
Adb pull
As we have seen in our last post, you can use “adb push” to copy files from … Read more
Understanding Linux page cache memory
If data is written, it is first written to the Page Cache and managed as one of … Read more
Why a Website Still Looks Insecure After HTTPS
A certificate is only one part of a secure page. Use the browser and command-line checks in this workflow to separate certificate failures from mixed content, HTTP redirects, insecure forms, proxy mistakes, and cached policy.
Shuffle Music from the Ubuntu Command Line
For a trusted local music folder, mpv can recurse and shuffle it directly. This article also preserves the MPlayer workflow, fixes fragile filename handling, shows reusable playlists, and explains playback controls and audio troubleshooting.
Electron – Framework to Develop Cross-Platform Desktop Apps
Electron is a platform for writing cross-platform Desktop applications using Web technologies — this means, instead of writing your … Read more
Types of RFID Systems.
RFID systems types based on Frequency band within which they work – 1. Low Frequency ( LF … Read more