Linux

How to Install OPCache to Improve PHP Performance On…

OPcache is a type of OPcode caching. It is a powerful PHP extension built to enhance PHP performance. It works by storing pre-compiled script...
Md Obydullah
45 sec read

How to Schedule Python Script With Supervisor

In this short article, I’m going to share how to schedule a python script using supervisor. Let’s get started: Table of Contents Install Supervisor...
Md Obydullah
30 sec read

How to Install Supervisor on CentOS 7,8

The supervisor is a client/server system that allows its users to monitor and control a number of processes on UNIX-like operating systems. In this...
Md Obydullah
1 min read

Install Netcat on CentOS 8 / RHEL 8

In this article, I’m going to show how to install netcat on RHEL/CentOS 8. Let’s get started: Table of Contents Installation Verification Usage Installation...
Md Obydullah
19 sec read

Auto Restart MariaDB/MySQL If it Crashes on CentOS

Infrequently it happens on CentOS. MySQL/MariaDB stops working and our web application crashes. At this situation we have to login to SSH and restart...
Md Obydullah
36 sec read

How to Fix cURL Error 7 Failed to Connect…

Sometimes we face “cURL error 7: Failed to connect to permission denied” this type of error due to our server permission. Most of the...
Md Obydullah
18 sec read

How to Hide PHP Version in Linux

Sometimes we need to hide PHP version from our webserver to hide PHP version identy. It helps us to prevent malicious attacks. In this...
Md Obydullah
39 sec read

Hide Nginx Server Version in Linux

In this article, I’m going to show how to hide Nginx server signature in Linux. Generally, on 404 page, the server shows it’s version...
Md Obydullah
27 sec read

Set Up SSH Key-Based (Passwordless) Login on Linux Server

Typically, SSH keys is more secure and convenient than traditional password authentication. In this article, I’m going to show how to setup SSH key-based...
Md Obydullah
1 min read

How to Test CPU and Memory Load with Stress…

In this article, I’ll install Stress on Linux machine and test CPU and memory load with Stress. Let’s get started: Table of Contents Install...
Md Obydullah
54 sec read

Install ImageMagick (Imagick) on Centos 8

In this article, I’m going to show how to install the Imagick PHP extension on RHEL/CentOS 7. Let’s get started: Table of Contents Install...
Md Obydullah
43 sec read

Disable Directory Listing on Apache

Directory listing allows the contents of a directory to be displayed upon request from a web client. It’s not good. To secure our web application we...
Md Obydullah
47 sec read

Install phpredis on CentOS 8 / RHEL 8

In this article, I’m going to show how to install phpredis on RHEL / CentOS 8. Let’s get started: Table of Contents Install Redis...
Md Obydullah
1 min read

How to Add MariaDB Error Log File on CentOS…

Hello server administrator, in this article I’m going to share how to create MariaBD error log flie on CentOS. I’m testing on CentOS 8....
Md Obydullah
55 sec read

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