Knowledgebase

 "You have new mail in /var/spool/mail/root" - Delete Mail

This article provides a guide for deleting mail in /var/spool/mail/root folder of Linux server....

 "You have new mail in /var/spool/mail/root" - Reading Mail

This article provides a guide for reading mail in /var/spool/mail/root folder of Linux server....

 508 Resource Limit is Reached

If your website is on a cPanel hosting account, you may have noticed the following error message:...

 Bash Script to Automate Permissions Policy Requirements for Key-Based Authentication

This article provides a convenient Bash script to automate permissions policy requirements for...

 Bind Additional IPs to NIC - RHEL-based Systems

This article explains the process of binding multiple IP addresses to the Network Interface Card...

 Convert .img File to .qcow2 File

This article provides a guide demonstrating how to convert .img file to .qcow2 file. What is...

 Create PKCS #12 Archive from Command Line Using OpenSSL

The PKCS#12 or PFX format is a binary format for storing the server certificate, any intermediate...

 Creating Apache Virtual Hosts On Linux VPS

This article provides a guide for creating Apache virtual hosts on a Linux VPS. This guide helps...

 Creating Network Bridge for KVM Hypervisor

This tutorial describes how to set up a dedicated network bridge for KVM slave (host) CentOS 7...

 Delete Login History on Linux Server

On the Linux systems there are three standard commands that show the information about last...

 Disable IPv6 on Debian

This article provides a guide demonstrating how to disable IPv6 on Debian servers. How to...

 Disable Network Manager on CentOS 6

This article will provide the steps to disable Network Manager in CentOS 6. Network Manager is...

 Disable Network Manager on CentOS 7

This article will provide the steps to disable Network Manager in CentOS 7. Network Manager is...

 Disable Network Manager on CentOS 8

This article will provide the steps to disable NetworkManager in CentOS 8. NetworkManager is not...

 Disable SELinux for AlmaLinux

This article will provide the steps to disable SELinux in AlmaLinux. SELinux is a security...

 Disable SELinux in CentOS 7

This article will provide the steps to disable SELinux in CentOS 7. SELinux is a security...

 Enable Browser Caching with cPanel Include Editor

Enable browser caching to reduce website loading times, reduce server load, and reduce bandwidth...

 Enable Browser Caching with htaccess File

Enable browser caching to reduce website loading times, by taking advantage of caching of...

 Enable Persistent Logging for Systemd/Journalctl

This article provides a guide to enable persistent logging for systemd and journalctl on your...

 Enable or Disable yum/dnf Repositories

This article provides a guide demonstrating how to enable or disable yum/dnf repositories on...

 Extract and Import Database to Remote Server

This guide will demonstrate how to extract and import database to remote server.  Prerequisites...

 Forcing HTTP Requests to HTTPS with htaccess

This article provides a guide for redirecting HTTP traffic to HTTPS using your website's...

 Generating CSR and Private Key on Apache ModSSL Server

This guide demonstrates the process of generating a Certificate Signing Request (CSR) and Private...

 HTTP Error 503 Service Unavailable

If your website is on a cPanel hosting account, you may have noticed the following error message:...

 Header Status Codes

This article provides a guide to web server header status codes. 1xx Informational Request...

 How To Change SSH Port In CentOS 7

This article will provide a guide for how to change SSH port in CentOS 7 server. For server...

 How to Add Files to a Website

This article will provide a guide for how to add files to a website. How to Add Files to a...

 How to Change MySQL User Password in Linux Server

MySQL and MariaDB are the most popular open source database systems meant for Linux based...

 How to Change Root Password Using SSH

This article explains the method of changing the root password on a Linux Server using SSH....

 How to Configure SNMP on Rocky Linux 9 VPS Servers

This article provides a guide for how to configure SNMP on Rocky Linux 9 VPS servers. How to...

 How to Copy All Packages from One Server to Another

This article provides a guide for how to copy all packages from one server to another. This could...

 How to Create PHP Cron Jobs

This article provides an extended look at how to create PHP cron jobs in Linux. Creating PHP...

 How to Create Sudo User on CentOS

This article provides step-by-step setup guide for adding Sudo user to CentOS system. The sudo...

 How to Create Sudo User on Ubuntu

This article provides step-by-step setup guide for adding Sudo user to Ubuntu system. The sudo...

 How to Create a Swap File on VPS Servers

This article provides guide demonstrating how to create a swap file on VPS servers. What is a...

 How to Create and Mount a RAM Disk

This article provides a guide detailing how to create and mount a RAM disk on a Linux VPS or...

 How to Enable Mcrypt for PHP 7.2 and Later in cPanel Server

This article provides a guide for how to enable Mcrypt for PHP 7.2 and later in cPanel server....

 How to Find Apache Document Root in CentOS

This article provides a guide for how to find Apache Document Root in CentOS server.  What is...

 How to Find the Public IP Address of Linux Server

This guide will provide steps to find the public IP address for Linux VPS or dedicated servers....

 How to Install and Configure Fail2ban

This article provides a guide for how to install and configure Fail2ban on VPS server or...

 How to Install and Run Geekbench 5 on Linux VPS or Dedicated Servers

This article provides a guide for how to install and run Geekbench 5 on Linux VPS or dedicated...

 How to Install and Run MTR Report

In this article, we will demonstrate how to install and run MTR report on a CentOS server. MTR...

 How to Make a File or Directory Immutable

This article provides a guide for how to make a file or directory immutable. Background Setting...

 How to Open Ports on Linux Server

This article will provide a guide for how to open ports on Linux server. This guide requires...

 How to Resolve "DB version too old [0.23], expected [0.24] for domain implicit_files" SSSD Error

This article provides a guide for how to resolve "DB version too old [0.23], expected [0.24] for...

 How to SSH a Virtual or Dedicated Server (Linux)

SSH is a tool used to connect to your server. This is how the majority of your system is setup....

 How to Use Sudo

This article provides a guide to using a Sudo user on CentOS server. From the command line,...

 Import SSH Keys on CentOS 7 Server

This article provides a guide to import SSH keys to CentOS 7 VPS server or Dedicated Server....

 Install EPEL with PowerTools for CentOS 8

This tutorial provides a guide to install EPEL with PowerTools for CentOS 8 VPS or dedicated...

 Install MySQL on CentOS 6 Server

This tutorial provides step-by-step instructions for installing MySQL database server on CentOS...

 Install MySQL on CentOS 7 Server

This tutorial provides step-by-step instructions for installing MySQL database server on CentOS...

 Install Public Key on AlmaLinux 8 VPS

This article provides a guide for how to install public key on AlmaLinux 8 VPS. How to Install...

 Install WGET on CentOS VPS

This article provides a guide to install WGET on CentOS VPS 6/7 minimal installation. What is...

 Locating php.ini File

A critical file you often need to manage is the php.ini file, also known as the PHP configuration...

 Modify Directory and Subdirectory Permissions

This article demonstrates the process of chmod file and subfolder permissions per directory,...

 Modify Server Hostname Using SSH in CentOS

This article provides a guide to modify server Hostname using SSH in CentOS server. You can use...

 MySQL Server GPG Keys Expired (Workaround)

This article provides a guide for resolving an issue caused by MySQL GPG key expiration. This...

 Online htaccess File Generator

Instructions Fill the options and push "generate" button in order to get your .htaccess...

 Recursive Find and Replace Linux Command Line Method

This article provides a guide for using recursive find and replace (Linux command line method) to...

 Recursively Delete Directory Using SSH

This article will demonstrate the procedure to recursively delete directory using SSH. Upon...

 Resolved: "rpmdb Failed: Thread died in Berkely DB library"

This article discusses how to resolve "rpmdb Failed: Thread died in Berkely DB library" error on...

 Set Server Time Zones with Timedatectl

This article provides a guide to setting the server time and server time zone settings using...

 Setting .ssh File and Directory Permissions

This article provides a guide for setting .ssh file and directory permissions for a user on...

 Subnet Masks

The following table provides a quick reference guide for subnet masks and their corresponding...

 Update CentOS Server Packages with Yum

This guide provides step-by-step tutorial for updating a CentOS server's core packages using the...

 Using htaccess File to Block IPs

If your webserver is Apache, you may block access to your website from specific IP addresses...

 View Server PHP Environment with phpinfo.php

This article provides a guide for how to view server PHP environment with phpinfo.php. View...

 Workaround to Solve Composer Installation Timeout Error

This article provides a guide for how to use a workaround to solve Composer installation timeout...

 htaccess RewriteRule Examples

Here are some useful mod_rewrite RewriteRule redirect examples that you can use in your .htaccess...