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.
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.
Perforce Backup Commands: Checkpoints, Journal Rotation, and Restore Workflow
This guide explains the core Perforce backup commands from the original post and how to use them in a practical backup and restore workflow. You will get a command reference, comparison tables, and ready-to-adapt examples.
Executing External Commands in Perl: system, exec, backticks, and open Explained
Perl provides multiple ways to run external commands, and each one behaves differently. This guide shows when to use system, exec, backticks, or open, with safe patterns for output capture and exit-code handling.
Common UNIX Commands and Utilities: Practical Reference for DevOps and Sysadmin Work
A structured UNIX command reference organized by real operational tasks: discovery, files, processes, networking, text processing, and job control. Includes C-shell notes, comparison tables, and practical command examples.
Ant build.xml for WAR Packaging and Tomcat Deployment (Annotated Reference)
This guide turns a legacy Ant WAR build sample into a practical reference you can reuse. You will learn the target flow, required layout, runnable commands, and common pitfalls before using it in CI/CD.
Windows XP/2000 Command-Line Reference for Administrators
A structured reference to key Windows XP and Windows 2000 command-line tools, including OS availability, troubleshooting workflow, and practical command examples. Useful for legacy support, migration prep, and forensic troubleshooting.
VI/Vim Command Reference for DevOps Engineers: Modes, Search, Replace, Files, and Shell
A practical VI/Vim reference for day-to-day DevOps work on Linux and Unix systems. Learn the commands you actually use: editing flow, save/quit, search/replace, splits, tabs, buffers, and shell integration.
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….
Top 50 Selendroid interview questions and answers
General Questions Element Identification and Interaction Multiple Device Support Native and Hybrid App Automation WebView Automation Testing Framework Integration Gestures and Actions Test Configuration and Management Error…
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: Detached (-d) mode in Docker – Explained
We use Docker detached mode (-d) when we want to connect to the container in an interactive mode or we can say when we just want application…
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 Appium interview questions and answers
1) Describe various types of mobile applications Mobile applications are of the following three types: Native Applications: Applications that are created with the help of iOS and…
Ansible Connection Options for windows remote Server
Error – Failed to connect to the host via ssh Solution – You need to set ansible_connection=winrm to connect to windows [windows] 13.233.160.153 [windows:vars] ansible_connection=winrm Error –…
What is Composer and How to Install Composer?
In my previous article I have explained about the best concept about Laravel in which I mentions what is Laravel and many things about its feature. if…
How to upload the artifacts in Sonatype Nexus using Maven
Step 1 – Install and Configure Nexus Server Step 2 – [Nexus Server] Create a nexus role containing all required access of Nexus. Step 3 – [Nexus…
Replicating claims as headers is deprecated and will removed from v4.0.
Replicating claims as headers is deprecated and will removed from v4.0. Please manually set the header if you need it replicated. When you using Laravel 5.5 and…
Ansible Adhoc Commands Lab & Excercise – Part 1
Program 1 – Write a Ansible Adhoc Commands to create a group called “deploy How to verify? $ more /etc/group | grep deploy Program 2 – Write…
Delete files and folder using batch commands…
rajeshkumar created the topic: Delete files and folder using batch commands… del /s /q bin – deletes all files recursively rmdir bin – delete empty folders.. Regards,…
How to Start and Stop Nagios Core | Nagios Tutorial
Starting Nagios Core Init Script: The easiest way to start the Nagios Core daemon is by using the init script like so: /etc/rc.d/init.d/nagios start Manually: You can…