Deepak Prasad

Compare AlmaLinux 9/10 and Rocky Linux 9/10 for servers: RHEL compatibility models, support timelines, cPanel support, migration tools, hardware requirements, patching philosophy, and when to pick each Enterprise Linux …

Compare AlmaLinux 9 and 10 with Ubuntu 24.04 LTS for servers: RHEL compatibility, dnf vs apt, SELinux vs AppArmor, support timelines, cPanel hosting, cloud images, migration from CentOS, and practical workload guidance.

Install Yazi on Ubuntu from the official GitHub .deb, a zip binary, Snap, or an APT repo; pull in preview dependencies like fd, ripgrep, and fzf; fix the fd-find name on Ubuntu; launch yazi, and uninstall cleanly.

Fix sudo add-apt-repository command not found on Ubuntu and Debian by installing software-properties-common, verify the binary, add or remove PPAs and third-party repos, and use manual sources.list.d when the helper is …

Compare Debian 12 Bookworm and Ubuntu 24.04 LTS Noble for servers: release cycles, security support, package freshness, Snap vs pure APT, cloud images, resource use, and when to pick each distro for production workloads.

Free, complete Go (Golang) tutorial in learning order: install, modules, syntax through structs, error handling, I/O and JSON, then goroutines, HTTP, databases, testing, security, logging, Docker/Lambda/cgo. 100+ …

Free, hands-on JavaScript tutorial - strings, numbers, arrays, objects, ES6+ features, classes, async/await, the DOM, error handling, and common error fixes. 75+ runnable lessons covering modern JavaScript. Each linked …

Free, hands-on OpenLDAP tutorial - install on RHEL/CentOS/Rocky/Ubuntu, configure TLS, set up master-slave and multi-master replication, integrate Linux clients, and migrate from one server to another. 12 …

The "Cannot Assign Requested Address" error is quiet common in the network community and can be seen in various network-related and application specific

The "SSH: No route to host" error to be honest can occur n number of issues. There is no specific one solution which will work for all scenarios. So in this

DNS reconnaissance is a technique to gather information about DNS (Domain Name System) data. This process helps in identifying the network infrastructure and

Common active reconnaissance methods include the following:

Install Caddy on Ubuntu from the official Cloudsmith APT repo: add the GPG key, apt install caddy 2.11.4, verify systemd, serve a static site with a Caddyfile, open UFW ports 80 and 443, and enable automatic HTTPS for …

Explore solutions to the Docker error 'can only create exec sessions on running containers: container state improper.

Learn how to keep a Docker container running using multiple methods like TTY mode, entrypoint, sleep infinity, and process management. Fix containers exiting immediately with practical examples and best practices.

Learn how to override Docker ENTRYPOINT and CMD using docker run options. Understand the difference between ENTRYPOINT and CMD with practical examples and best practices.

Learn how to use docker ps -a to list all containers including stopped ones. Explore examples, filters, and output details to manage Docker containers effectively.

There are 3 different possible methods to perform docker container SSH. Using docker exec, docker attach and by running a SSHD service inside a container and using SSH client to connect to container

Docker restart container using various flags to control the restart behavior of the container

handle different condition in dockerfile such as docker file if else condition, arg conditions, ARG vs ENV comparison with examples

Learn what a URL fuzzer does, how web application fuzzing works, when to use online URL fuzzers vs command-line tools, and how to choose between FFUF, Gobuster, Dirsearch, Wfuzz, Feroxbuster, and Burp Intruder for …

Learn practical and authorized ways to find hidden API endpoints using browser DevTools, JavaScript files, GitHub search, archived URLs, gau/getallurls, APK analysis, and JS recon tools such as LinkFinder and JSFScan.

Use nmap, hping3 and netcat (nc) to check open ports in Linux. You can also use netcat to test firewall rules to make sure if a port is open or closed in a network.

Kubernetes Helm Charts are package manager used to deploy charts (package). This can contain all type of resources and deploy or un-deploy them instantly. It makes handling complex applications very easy.

How to create shared folder using Oracle VirtualBox with Linux Operating System? Can I share a folder from Windows host to Linux OS inside Oracle Virtual Box?

Tutorial Manage Docker Container. Download Docker Image from Docker Hub. How to connect and exit from docker container query docker hub and check logs

Install jq on Ubuntu with sudo apt install jq, verify with jq --version, pretty-print and filter JSON from files and curl output, fix Unable to locate package jq with apt update, and optionally install jq 1.8.x from …

Install zlib on Ubuntu with sudo apt install zlib1g-dev for headers and pkg-config, fix configure could not find the zlib library and zlib.h not found errors, verify with pkg-config --modversion zlib, and optionally …

Install NVM on Ubuntu with the official install.sh script, load it in bash or zsh, install LTS Node.js with nvm install --lts, switch versions with nvm use, set a default alias, and fix nvm command not found and Snap …

Install HPLIP on Ubuntu with sudo apt install hplip hplip-gui for most HP printers, use HP SourceForge .run when your model needs a newer driver, run hp-plugin and hp-setup to add the device, and remove conflicts before …