Linux

How to Install Postfix on CentOS 8

In this article, I’m going to share how to install Postfix on CentOS 8 server. Let’s see: Table of Contents Remove Sendmail Install Postfix...
Md Obydullah
45 sec read

mysqli_connect(): (HY000/2002): Permission denied [Fixed]

Today I’m going to share the solution of mysqli_connect(): (HY000/2002): Permission denied error. Let’s see: Table of Contents Reason Solution Reason This error occurs...
Md Obydullah
27 sec read

How to Install Composer on RHEL/CentOS 7, 8

Composer is an application-level package manager for the PHP programming language that provides a standard format for managing dependencies of PHP software and required...
Md Obydullah
41 sec read

How to Config Security-Enhanced Linux (SELinux) Policies

Security-Enhanced Linux (SELinux) is a Linux kernel security module that provides a mechanism for supporting access control security policies, including mandatory access controls (MAC). SELinux is...
Md Obydullah
1 min read

Allocate Memory as Swap File in Amazon EC2

In this article, I’m going to talk about how to allocate memory to work as a swap file in an Amazon Elastic Compute Cloud...
Md Obydullah
1 min read

Install Htop Interactive Process Viewer on Linux

Htop is an interactive system-monitor process-viewer and process-manager. It is designed as an alternative to the Unix program top. It shows a frequently updated...
Md Obydullah
31 sec read

Install Visual Studio Code on Kali Linux

In this article, we’re going to install Visual Studio Code on Kali. I’m testing on Kali 2020.2. Installation At first we need to update...
Md Obydullah
24 sec read

How to Remove Junk Files from Kali Linux

In this guide, I’m going to share how to remove junk files from Kali Linux. Let’s see. Table of Contents Method 1 Method 2...
Md Obydullah
19 sec read

Install SSH (Secure Shell) Service on Kali Linux

In this article, I’m going to share how to install & enable SSh on Kali Linux. Table of Contents Install SSH Enable and Start...
Md Obydullah
27 sec read

Display Linux System Information in Terminal using Neofetch

Neofetch is a command-line system information tool written in bash 3.2+. Neofetch displays information about your operating system, software and hardware in an aesthetic...
Md Obydullah
54 sec read

Install Linux, Apache, MySQL, PHP (LAMP) on Ubuntu

LAMP stands for Linux, Apache, MySQL and PHP. Most of the websites used LAMP stack and it’s very easy to setup. In this lesson,...
Md Obydullah
1 min read

Reset Your MariaDB or MySQL Root Password

Today we’re going to learn how to reset the root password of MySQL or MariDB. Let’s get started: Table of Contents Stop Database Server...
Md Obydullah
52 sec read

Install and Configure Squid Proxy on CentOS 7 &…

Squid is a caching and forwarding HTTP web proxy. It has a wide variety of uses, including speeding up a web server by caching...
Md Obydullah
2 min read

How to Solve MySQL / MariaDB Error 1040 “Too…

In this article, I’m going to share how to solve MySQL / MariaDB error 1040 “Too Many Connections”. Table of Contents Check Connections Solution...
Md Obydullah
25 sec read

Allow Remote Access to MariaDB Server on RHEL /…

In this tutorial, I’m going to show how to allow remote access to MariaDB server on RHEL / CentOS. Let’s get started: Table of...
Md Obydullah
1 min read

Install RethinkDB Realtime Database on RHEL / CentOS 7…

RethinkDB stores JSON documents with dynamic schemas and is designed to facilitate pushing real-time updates for query results to applications. Today I’m going to share...
Md Obydullah
1 min read

Setup Your Own VPN Server on Debian, Ubuntu or…

Virtual Private Network (VPN) is a popular way to stay safe online. In this article, I’m going to share how to create your own...
Md Obydullah
1 min read

How to Secure Nginx with Let’s Encrypt SSL on…

In this tutorial, we are going to setup Let’s Encrypt SSL (free SSL) on CentOS / RHEL 7 server running Nginx webserver. Let’s get...
Md Obydullah
1 min read