All Posts

September - 2022

Install/Setup & Run simple program in Golang

Install/Setup & Run simple program in Golang

April - 2017

Install & Setup NGINX PageSpeed

Step By Step guide to install & setup NGINX with PageSpeed Module

Setup User Account

Step By Step Guide to Create/Setup User Accounts

March - 2017

LEMP Stack - Conventions & File System Layout

A place for everything and everything in its place!

First 5 Minutes on Setup Linux Server Security

My security philosophy is simple: adopt principles that will protect you from the most frequent attack vectors. If you use your first 5 minutes on a server w...

February - 2017

How to Fix Ping Socket Address Family Not Supported by Protocol

Recently CentOS7 update fix the iputils package ping command, The ping command no longer works with IPv4 address

January - 2017

How to Fix Mac OS Sierra - the Installer Payload Failed Signature Check

The installer checks the date on the computer. If the date isn’t current, you get the error above. The fix involves correcting the date on your Mac.

December - 2016

How to Push Empty Commit to Remote Repository

In this guide we can push empty commit on remote repository, Which allow us to setup the deployment process easily.

How to Fix SSH Keys/passphrase Issue on Mac OS X 10.12

How to fix SSH Agent issue on MAC OS X Sierra with auto startup script file

September - 2016

How to Monitor SSL & SSL Labs Summary With Nagios

Monitor SSL Labs Results with Nagios Monitoring System

How to Monitor Domain Expire Date With Nagios

Check Domain Expire Date With Nagios Monitoring System

How to Setup Separate NGINX FastCGI Cache for Mobile & Desktop Users

In this guide I'll show you how to setup separate NGINX FastCGI cache for Mobile & Desktop users.

How to Configure Remote System for Nagios Monitoring

Step by step guide to add remote server on Nagios System

How to Configure Nagios Monitoring System

Step by step guide to Configure Nagios

How to Setup Nagios Monitoring System

Nagios is an enterprise class, open source software that can be used for network and infrastructure monitoring. Using Nagios, we can monitor servers, switche...

August - 2016

How to Fix No Space Left on Device

How to fix running out of inodes issue

July - 2016

How to Fix NGINX Logging Issue

How to fix NGINX writes logs into access.log.1 instead of access.log issue

Ansible Installation

Ansible is an IT automation tool. It can configure systems, deploy software, and orchestrate more advanced IT tasks such as continuous deployments or zero do...

How to Find Out AWS S3 Bucket Human Readable Size

s3cmd is the best command-line tool to manage S3 buckets. Sometimes, you will need to know the size of some of your bucket

How to Search/remove Google Chrome History

How crashchrome.com works and clear Google Chrome History

How to Fix Nf_conntrack Table Full Dropping Packet

How to Fix Nf_conntrack Table Full Dropping Packet Issue on CentOS server

June - 2016

How to Disable/Backlist Package Update

Step by step guide to disable/block or blacklist package updates using APT

How to Add Secondary IP/Alias on Network Interface in RHEL/CentOS7

This guide will show you how to add an extra IP address to an existing interface in Red Hat Enterprise Linux / CentOS 7.

How to Fix NGINX Reload Issue

How to fix - reload: Job is not running: nginx

May - 2016

How to Enable OpenSSL 1.0.2.a (TLSv1.1 & TLSv1.2) on CentOS 5 & RHEL5

How to build OpenSSL & Curl Package to make connection on TLS1.2 Enable Websites.

April - 2016

Docker - Running Containers

Running docker containers in different ways

Docker - Installation

Step by step guide to install Docker on Ubuntu, Debian ,CentOS & Mac

March - 2016

How to Use Apache Instead of Built-in NGINX in Gitlab CE

How to use Apache on Gitlab CE.

How to Install WordPress on CentOS7

In this guide, we will demonstrate how to get a WordPress instance set up with an Apache web server on CentOS 7.

How to Install Linux Apache MySQL PHP (LAMP) Stack on CentOS7

A LAMP (Linux, Apache, MySQL, PHP) stack is a common web stack used for hosting web content. This guide shows you how to install a LAMP stack on a CentOS 7 s...

How to Fix Charles Proxy Crash/Hang Issue

Step by step guide to fix charles proxy hang/crash issue on Ubuntu OS

How to Fix 'Failed to Fetch' Google Chrome Apt Error

How to fix Google Chrome unable to find expected entry ‘main/binary-i386/Packages’ in Release file

February - 2016

How to Setup Sentry Logging Server

Sentry provides real-time crash reporting for your web apps, mobile apps, and games.

January - 2016

Sudo Insults

An interesting sudo feature is the ability to insult you when you type a wrong password. It has really funny phrases.

Quickly Findout Missing Package

Sometimes we need to check installed software on multiple system and install missing software asap.

How to Remove Last Commit From Local & Remote Git Repository

Sometimes by mistake we push commits on remote branch. I'll show you how to remove/delete last commit from remote branch

How to Setup Malicious Traffic Detection System

Maltrail is a malicious traffic detection system, utilizing publicly available (black)lists containing malicious and/or generally suspicious trails, along wi...

December - 2015

How to Setup Augmented Traffic Control (ATC)

Augmented Traffic Control (ATC) is a tool to simulate network conditions. It allows controlling the connection that a device has to the internet. Developers ...

How to Setup Your Own VPN With PPTP

A Point-To-Point Tunneling Protocol (PPTP) allows you to implement your own VPN very quickly, and is compatible with most mobile devices. Even though PPTP is...

October - 2015

How to Solve OpenVPN Problem in OS X El Capitan

If you are getting an error like `DynamicClientBase: JSONDialog: Error running jsondialog, status`

Repair/Fix MAC HFS+ Partition Using Ubuntu

Step by Step Guide to Recover/Repair MAC HFS+ HDD on Ubuntu Linux

How to Create a Bootable Ubuntu USB

Create Bootable Ubuntu USB & Fix gfxboot.c32 not a com32r image boot problem

Redpill - Matrix Screen Saver for Mac OS

Redpill - Matrix ScreenSaver For Mac OS X (Yosemite & Ei Captain)

Realtime Log Monitoring in Your Browser

How to monitor logs realtime in your web browser.

September - 2015

Terminal Escape Sequences - the New XSS for Admins

If the terminal understands the sequence, it won't display the character-sequence, but will perform some action.

How to Block Facebook

Sometimes, We need to block Social Networking websites like Facebook to deal with slow internet.

How to Fix Metasploit Database Not Connected or Cache Not Built

This is a short post explaining how to deal with Metasploit instance not connected to its Database

August - 2015

How to Record Terminal Sessions

Asciinema is a free and open source solution for recording terminal sessions and sharing them on the web.

SSH Tips and Tricks

Simplify Your Life With an SSH Config File

How to Monitor NGINX Logs on ELK Stack

Step by step guide to configure NGINX/WordPress/EasyEngine Logs on ELK Stack.

How to Monitor Fail2Ban Logs on ELK Stack

Step by step guide to configure Fail2Ban Logs on ELK Stack.

How to Monitor Squid3 Logs on ELK Stack

Step by step guide to configure Squid3 Logs on ELK Stack.

How to Monitor System With ELK Stack

Step by step guide to Monitor System with ELK Stack.

How to Configure Kibana

Step by step guide to configure Kibana - An open source data visualization plugin for Elasticsearch.

How to Configure Logstash

Step by step guide to configure Logstash - Transport and process your logs, events, or other data

How to Configure ElasticSearch

Step by step guide to configure ElasticSearch – The Open Source, Distributed, RESTful Search Engine

How to Configure Collectd

Step by step guide to configure Collectd – The system statistics collection daemon

How to Install Kibana

Step by step guide to install Kibana - An open source data visualization plugin for Elasticsearch.

How to Install Logstash

Step by step guide to install Logstash - Transport and process your logs, events, or other data

How to Install ElasticSearch

Step by step guide to install ElasticSearch – The Open Source, Distributed, RESTful Search Engine

How to Install Collectd

Step by step guide to install Collectd – The system statistics collection daemon

MAC OS EI Capitan - Fix Virtualbox Permission Issue

How to fix Virtualbox Permission issue on MAC OS EI Capitan

MAC OS X - Show/Hide Hidden Files in Finder

MAC OS X - Show/Hide Hidden Files in Finder

How to Add Some Colors and Emoji Icons on CommandLine/Terminal

How to customize CommandLine/Terminal and add some Rainbow Colors and Emoji icons on that.

NGINX/Apache Redirect Rules

All about NGINX and APACHE 301 Moved Permanently.

Download and Install OS X El Capitan Public Beta

How to Download and Install OS X El Capitan Public Beta

How to Remove Password From PDF Files

How to Remove Password From PDF Files on Linux.

July - 2015

Kali Linux and Metasploit With Docker

How to setup and run Kali Linux with Metasploit tool under the Mac OS X

MyCLI - MySQL MariaDB and Percona Auto-completion and Syntax Highlighting Tool

Mycli is a command line interface for MySQL, MariaDB, and Percona with auto-completion and syntax highlighting.

OS X 10.10 DYLD_PRINT_TO_FILE Local Privilege Escalation Vulnerability

How to bypass Apple's security and gain administrator-level privileges on an OS X Yosemite Mac using code that fits in a tweet.

NGINX - Time Based Rewriting Rules

How to tell NGINX to change it's behavior for specific time windows. Extremely useful for lazy system admins like me

WARNING: Remote Host Identification has Changed

How to fix Remote Host Identification has Changed issue.

How to Remove/uninstall Adobe Flash Player From Windows/Linux/Mac OS

A Step By Step Guide to Remove/Uninstall Adobe Flash Player On Windows/Linux/Mac OS and Block Adobe Flash Player on Google Chrome/Firefox/IE Web Browsers.

How to Findout Number of Available Processors

Findout how many Processors available on your system/servers using the simple command nproc.

HTTPie - HTTP for Humans

HTTPie - Command Line HTTP Client, Also Known for cURL and wget command Alternative.

How to Setup SmartPhone Test Farm (STF)

Smartphone Test Farm (STF) is a web application for debugging smartphones, smartwatches and other gadgets remotely, from the comfort of your browser.

How to Access exFAT File System in Linux

Linux doesn't provide native support to exFAT File System. In this tutorial I'll show you how to access the exFAT File System in Linux.

NGINX - Address Already in Use Error

How to fix NGINX Error - [emerg]: bind() to 0.0.0.0:80 failed (98: Address already in use)

How to Create Directory and Change Permission With Single Command

Quiz - How to create new directory and change its Permission with single command

Run Commands Without Login Into User Shell

How to execute commands Without Login into user shell

DuckDuckGo - Awesome Search Engine

DuckDuckGO - Awesome Search Engine to quickly find required information.

Useful Bash Commands

Most useful Linux/Unix Commands, A collection of commands which can save lot's of our typing time.

How to Upgrade Multiple WordPress With Single Command

How to Upgrade Multiple WordPress, WordPress Plugins and WordPress Themes with single command.

How to Change Windows 7 Product Key

How to Change Windows 7 Product Key or Activate Windows Using Legal Key

How to Access Staging Website Without Editing Hosts Files or DNS

It's hard to explain How to Edit Hosts File on Linux, Mac and Windows.

How to Edit the Hosts File on Linux

The Hosts file is used to map Hostname to IP address.

How to Flush DNS Cache on Mac OS

How to Flush DNS Cache on Mac OS

How to Edit the Hosts File on Mac OS

The Hosts file is used to map Hostname to IP address.

Check Website Performance

Studies show that users leave a site if it hasn't loaded in 4 seconds; keep your users happy and engaged by providing a fast performing website!

Perform Search and Replace on Webpages

Sometimes we need functionality which can perform search and replace for us so we can directly copy paste codes.

Transform Any Browser Window Into Text Editor

Transform Google Chrome, Firefox or Safari Web Browser Windows Into Quick Edit Notepad.

June - 2015

Security Alert - Get SMS Update For Wrong Password

As a Linux System Admin I'm always need to monitor system logs for any unauthorized activity like brute force attack or co-worker trying to guess the server ...

How to Push Specific Commit With Git

Sometimes we made lots of commits locally and want to push specific commit to the remote branch. I'll show you how to push specific/single commit on remote b...

How to Find Github User Public Keys

Sometime we have to give temporary access to some github user, I'll show you how to easily find fithub users public keys.

How to Change Bash Custom Prompt (PS1)

How to change bash custom prompt and make it more usable. Think when you enter wrong command your bash prompt turn into RED.

How to Check Package Is Installed or Not

As a System Admin, I've to check some Package is installed or not. In this article I'll show you how to properly check some package is installed on your syst...

Check Website Is Down for Everyone or Just for Me

Sometimes we need to check weather some Website is down for everyone or It's just for me.

Generate Random Password

How to generate some random password by using single command

Auto Reload NGINX

How to automatic reload NGINX, When some of website configuration files Modify/Created/Deleted.

How to Disable CPU Cores

How to Disable CPU Cores In Linux Operating System

VIM - Automatic Open Readonly File With Sudo Privilege

Most of time I'll open system files with vim and after edit the system file vim says It's readonly file.

How to Fix Webroot Permissions

How to reset files and directory Permissions with single command

Assign Multiple IP Address

How to Assign Multiple IP Address to Single LAN Card using IP Aliasing

Deadly Linux Commands

If you are new to Linux, chances are you will meet a stupid person perhaps in a forum or chat room that can trick you into using commands that will harm your...

Download Youtube Videos

How to Download Youtube Videos with single command

Disable IPv6

Sometime IPv6 slow down internet connections, In this article I'll show you how to disable IPv6.

OS X Tips and Tricks

All about OS X Hacks

Disable Startup Chime on a Mac

Each time you start a Mac, you'll hear a familiar start-up chime. I'll show you how to mute the Mac start up chime completely.

Clean Install of OS X Yosemite

How to clean install of OS X Yosemite from bootable USB/HDD

Install Network Tools on Mac OS X

This article will teach you how to install network tools, such as nmap, mtr, nikto and dnsmap

How to Findout Your System Information

This article will teach you how to find out system information, such as Operating System, Serial Number, Processor, RAM and MAC Address, License Key

Display Security Information At Terminal Startup

Get latest Security News on your Terminal

Access Website Without Editing DNS

Simple curl command which is useful when we want to test staging website without edit /etc/host file or DNS

Things to Do After Installing Mac OS X

Newbie Guide - Install Git, OpenSSH-Server, Java, Shutter, Hipchat, VLC and Google Chrome on Mac OS

Things to Do After Installing Ubuntu Desktop

Newbie Guide - Install Git, OpenSSH-Server, Java, Shutter, Hipchat, VLC and Google Chrome on Ubuntu 14.04 (Trusty Tahr), Ubuntu 16.04 (Xenial Xerus) Linux

MySQL Basics

Newbie Guide - All about MySQL Database Server

System Initialization

Newbie Guide - All about Linux system boot sequence

System Logs and SELinux

Newbie Guide - All about system logs, Network Time Protocol (NTP) and SELinux

Package Management

Newbie Guide - All about manage package using yum and rpm commands

The Linux Filesystem

Newbie Guide - All about Filesystem Partition, Management, HardLinks, Softlinks and Compress Data

Advanced Topics in Users Groups and Permissions

Newbie Guide - All about manage users, groups and permissions

Network Clients

Newbie Guide - All about network clients such as web-browsers, emails & messaging applications, SSH & FTP clients and network diagnostic tools

Finding and Processing Files

Newbie Guide - All about locate and find command

Configuring the Bash Shell

Newbie Guide - How to configure BASH Shell

May - 2015

Investigating and Managing Processes

Newbie Guide - All about process management/scheduling, signals and job control

Basic System Configuration Tools

Newbie Guide - All about Network, DNS and Printer Configuration

VIM - an Advance Text Editor

Newbie Guide - VIM An Advance Text Editor

Text Processing Tools

Newbie Guide - Text Processing Guide

Standard IO & Pipes

Newbie Guide - Standard Input/Output & Pipes

Bash & Shell Scripting

Newbie Guide - BASH & Shell Scripting

Users Groups and Permissions

Newbie Guide - Linux users, groups and Permissions

Browsing the Filesystem

Newbie Guide - Basic Linux Commands & Filesystem Details

Running Commands and Getting Help

Newbie Guide - How to run commands & get help on Linux

Linux Usage Basics

Newbie Guide - How to use Linux

Linux Ideas and History

History behind Linux and OpenSource

How to Configure Status Pages Using Cachet

Beautiful & simple service status page, An open source status page system, for everyone.

Guest Post Guidelines

Setup Jekyll and Write first guest post

Hello World

First Post