How to Configure HTTP/HTTPS Proxy on Linux and Windows (CLI, GUI, Registry, and APT)
Set up proxy access correctly on Windows and Linux for command-line tools, package managers, and system-level use. This guide covers quick commands, persistent configuration, and common troubleshooting steps.
Linux Commands and Shell Scripting Reference for Linux Admins and DevOps Engineers
A structured Linux command and shell scripting reference for operations and DevOps work, rebuilt from the original link collection. It includes a practical learning workflow, command comparison tables, ready-to-use examples, and curated source links.
Linux pmap Command Guide: Inspect Process Memory Maps with Practical Examples
Learn how to use the Linux pmap command to inspect per-process memory mappings, compare output modes, and troubleshoot high memory usage quickly. This updated guide includes workflow steps, command examples, and interpretation tips.
iostat Command Guide for Linux: 20 Practical Examples for CPU and Disk I/O Troubleshooting
Learn how to use iostat to monitor CPU and storage performance on Linux systems. This revised guide covers installation, 20 practical commands, metric interpretation, and a troubleshooting workflow.
xargs in Linux: Practical Commands, Safe Patterns, and Pipeline Workflows
This guide explains how to use xargs effectively in Linux/Unix shells, from basic stdin handling to safe file operations and parallel execution. You’ll learn practical command patterns, portability caveats, and safer alternatives.
Linux mount and umount Commands: Practical Examples, /etc/fstab, and Safe Unmounting
Learn how to mount and unmount filesystems reliably on Linux, from one-off commands to persistent /etc/fstab entries. This guide covers common filesystem types, command comparisons, and safe troubleshooting steps.
Jira on Linux: Installation and Configuration with Safer Service and Firewall Setup
Learn how to install Jira on Linux using Atlassian’s installer, manage it as a service, and expose port 8080 safely. This revision keeps the original references but updates the process for clearer, production-minded operations.
How to Use gsh to Run Linux Commands Across Multiple Servers
gsh (Group Shell) lets you execute one command across many Linux hosts from a single terminal. This guide explains host grouping with /etc/ghosts, core options, and practical command patterns.
Linux System Administrator Responsibilities: Daily Operations, Privileges, and Best Practices
Linux system administrators are responsible for server reliability, security, access control, patching, backups, and troubleshooting. This updated guide maps those responsibilities to practical workflows and command examples.
Install Subversion (SVN) on Linux: Package Install, Source Build, Apache Setup, and Authentication
Learn how to install Subversion on Linux, create a repository, and publish it through Apache with user authentication. This revised guide includes both package-based and legacy source-build paths with practical commands.
Apache Maven Complete Guide: Concepts, Installation, settings.xml, and First Build
Learn what Maven is, how its lifecycle and POM model work, and how to install and configure it for team-friendly builds. This revised guide includes workflow diagrams, command references, and practical examples.
Syncro SVN Client v5.1 Features Explained: Workflow, Protocols, and Practical SVN Operations
This guide explains what Syncro SVN Client v5.1 offers for Subversion-based teams, from repository browsing to conflict resolution and history tracking. It also maps key GUI actions to equivalent SVN commands for mixed GUI/CLI workflows.
Install and Configure Grafana in Linux
Download & Install Grafana 13.x using TAR How to access grafana? Download & Install Grafana 11.x using TAR Download & Install Grafana 8.x using TAR and RPM…
Java Installation Guide in Linux & Windows
DOWNLOAD OPEN JDK & JRE JAVA PACKAGE FROM – https://jdk.java.net/archive/ Download and Install JDK/JRE 7 in Centos & RHEL Download and Install JDK/JRE 8 in Centos &…
Top 10 Command Line Tools in 2026: Features, Pros, Cons & Comparison
Introduction In 2026, command line tools continue to be a core component of efficient development, system administration, and networking. Despite the rise of graphical user interfaces (GUIs),…
Docker Tutorials: How to Install Docker in Ubuntu?
Install Docker Engine in Ubuntu NOTE – All commands you must run as root user or add a current user into a linux group name called “docker”…
Linux Tutorials: Commands for Linux Administrator
1. sudo – Execute commands with elevated privileges, a fundamental for system administration. 2. useradd – Create a new user account, essential for managing user access. 3….
Linux Tutorials: How to troubleshoot Linux Server?
If a linux-build-server suddenly starts getting slow, I would divide my approach / troubleshooting into 3 section as follows; System Level troubleshooting Application Level troubleshooting Dependent Services troubleshooting…
Linux Performance Monitoring Guide
CPU Memory Network Storage Device and Input I/O Storage Capacity Storage Controller CPU Memory and I/O Interconnect Rajesh KumarI’m Rajesh Kumar, a DevOps, SRE, DevSecOps, Cloud, and…
Linux Tutorials: mpstat commands examples
mpstat – Report processors related statistics. The mpstat command writes to standard output activities for each available processor, processor 0 being the first one. Global average activities…
Linux Tutorials: vmstat commands examples
The vmstat command (short for virtual memory statistics) is a built-in monitoring utility in Linux. Users can observe system activity virtually in real-time by specifying a sampling…
Docker Tutorials: Location of Docker images in all Operating Systems
Location of Dockers images in all Operating Systems The location of the images vary depending on the driver Docker is using for storage. Actually, Docker images are…
How to login linux server of AWS from windows using putty?
How to Generate PPK file from PEM using PuttyGen? AWS by default do not allow accessing a linux server using password so only key is allowed. But…
Installation and Configuration Guide: Bamboo
System requirements & considerations Java: Database: Installing Bamboo on Linux https://confluence.atlassian.com/bamboo/installing-bamboo-on-linux-289276792.html Install Bamboo using Docker Container Step 1 – Install Docker Step 2 – Install and Configure…
Linux Tutorials: Commands for Linux User
ls – List directory contents. cd – Change the current directory pwd – Print the name of the current working directory. touch – Create an empty file…
Top 50 Exim Interview Questions & Answer
1) You are not given the tools you need to be successful. How would you change that In Exim? State a business case to your manager /…
Top 50 traefik Interview Questions & Answer
1) What is Traefik software? Traefik (pronounced traffic) is a modern HTTP reverse proxy and load balancer that makes deploying microservices easy. Traefik integrates with your existing…
What is SELinux and how its SELinux used in Docker?
What is SELinux and how its SELinux used in Docker? SELinux, or Security-Enhanced Linux, is a part of the Linux security kernel that acts as a protective agent on…
Top 50 Django interview questions and answers
1) Django design pattern? Django follows MVC pattern (Model-View-Controller), also referred to as MTV (Model-Template-View). Model – describes database schemaViews – Controls what user can view. It…
Top 50 WordPress interview questions and answers
1) What is WordPress? WordPress is an Open Source Content Management System (CMS) and a blogging tool, based on PHP and MySQL. It is free of cost,…