Articles
Authentication, Authorization, and Accounting are the terms used to define 3 functions in IT and...
Steps to grow your KVM VM/Container’s partition after extending root OS size or extending...
Why Mailbox Providers Block IP Addresses? Before you set out to get the error, you should know...
Performance graph problems in Nagios The performance graphs in Nagios may do not display data...
The megabyte is a multiple of the unit byte for digital information. Its recommended unit symbol...
One of the most peculiar problems that content creators face is the inability to create...
Memory management is an essential aspect of every System Administrator to improve the performance...
These messages mean that someone is using symlink owned by user UID 818 trying to access file...
Acronis Backup Cloud provides us with a unified Cloud Console and has a multi-tenant and...
As a System Administrator, server uptime has much importance. The servers must be running as long...
There is powerful synergy between DevOps and Machine Learning (ML) — and related capabilities,...
Internet Relay Chat (IRC) is a text-based chat system. It enables discussions among any number of...
A sourcemap is a mapping between the generated/transpiled/minified JS file and one or more source...
This is due to missing PHP Extention named php-curl on the PHP Version which your website is...
Check Current Date, Time and TimeZone in Debian/Ubuntu Check Date of your Machine which...
Method 1: Check if the disk is rotational Since kernel version 2.6.29, Linux systems can...
Navigating in UNIX pwd Shows the full path of the current directoryls Lists all the files in the...
Configuration ManagementWhen working with large-scale software systems, configuration management...
Login to your server as "root". Then type in the following: pico /etc/motd Now type in the...
HDD:Traditionally hard drives are spinning device that is non-volatile storage, which means the...
We had few requests to support different PHP versions per directory . While this is not...
You can edit and manage images saved to your account using the Images interface. The tools that...
Secure Shell (SSH) is a fundamental component to virtual private servers (VPSs) and, generally...
A dotfile is a configuration file, in plain text, with a name that begins with a full stop (.),...
brctl stands for Bridge Control. In Linux, this command is used to create and manipulate...
1. Restore SELinux Context of a File In the below example, index.html file has “user_home_t”...
Fabric8 is easy to install on your laptop, on an existing Kubernetes or OpenShift cluster or the...
How much is 1 meg? Every time someone views your web page all of the data (html code, text,...
firewalld is the default method in Red Hat Enterprise Linux 7 for managing host-level firewalls....
The Friendly Interactive Shell which is commonly called and abbreviated as FISH is a shell for...
HTTPie (pronounced aitch-tee-tee-pie) is a cURL-like, modern, user-friendly, and cross-platform...
NMI Watchdog is something you would have heard of. NMI or Non Maskable Interrupt, is a type of...
Prerequisites Any of our OS options—Ubuntu, Debian, or CentOS. Just a note: we’ve only tested...
Prerequisites: A registered domain name. We will use a placeholder DOMAIN.TLD where you would...
Step 1: Login in your client area. Step 2: Go to, My Products & Services and here all of...
There are a few things that need to be cleared in terms of terminology: 1. Hits - this simply...
This is for cPanel and WHM version 68. One can navigate to (cPanel Home Preferences Password...
1. Login to the WHMCS admin dashboard. 2. Hover over Setup -> Products/Services and click...
To connect your domain to another web host, contact the web host to determine which of the...
MTR is a powerful tool that enables administrators to diagnose and isolate networking errors and...
This tutorial will help you to enable PHP errors to display on the web browser. This is helpful...
This guide will walk you through the process of resizing an ext2/3/4 or XFS file system without...
Dmidecode tool read DMI (some say SMBIOS) table to fetch data and displays useful system...
wget http://ftp.sunet.se/pub/gnu/gmp/gmp-4.2.2.tar.bz2 tar -xjvf gmp-4.2.2.tar.bz2 cd gmp-4.2.2...
wget http://oratoronline.com/how2/video_share_modules/source_directory/lame/lame-3.96.1.tar.gz...
Tmux is a terminal multiplexer an alternative to GNU Screen. It means that you can begin a Tmux...
Though there are various reasons as to why the emails could be marked as spam, this article...
When making backups, coping/moving large files on your Linux system, you may want to monitor the...
Man-in-the-middle (MITM) attack is a phenomenon by which an attacker obstructs communication...
Run the following command: cd /usr/local/src ; wget...
Asuswrt-Merlin is an improved version of Asuswrt, the firmware adopted by Asus’s modern wifi...
Type any one of the following commands: # camcontrol devlist OR # geom disk list List...
The Self-Monitoring, Analysis, and Reporting Technology System (SMART) built into most modern...
A directory is nothing but a location for storing files on the Linux system in a hierarchical...
ONLYOFFICE Desktop Editors is the free open-source office suite distributed under GNU AGPL v.3.0....
Prerequisites Docker running on your local computer Docker installed on your VPS Docker...
Step 1: Login to your client area. Step 2: Go to, My Products & Services and here all of...
A CPU is an acronym for the central processing unit. It is an essential part of a computer. The...
Step 1: Login in your client area. Step 2: Go to, My Products & Services and here all of...
Step 1: Login in your client area. Step 2: Go to, My Products & Services and here all of...
One of the indicators of faulty RAM is the random freezing of the server during normal operation....
In some situations, you need to change the VLAN IP address such as 172.0.0.2 with 172.0.0.1 for...
You might be getting error “Child failed to make LIVEAPI connection to cPanel”, when trying to...
Since WordPress 5.2 there is a built-in feature that detects when a plugin or theme causes a...
Prerequisites: A newly-provisioned or rebuilt server running any of our OS options—CentOS,...
Crypt:: DSA is an implementation of the DSA (Digital Signature Algorithm) signature verification...
Ghost is a modern, open-source blogging platform written in NodeJS. The latest releases of...
cd /usr/local/src wget http://oratoronline.com/how2/ImageMagick/ImageMagick-6.4.2-3.tar.gz (NOTE:...
cd /usr/local/ wget http://oratoronline.com/how2/Ioncube/ioncube_loaders_lin_x86.tar.gz tar -xvzf...
Nextcloud is an open-source software suite for storing and synchronizing data, sort of like a...
OpenVPN is open-source commercial software that implements virtual private network techniques to...
cd /tmp wget http://oratoronline.com/how2/RAR/rarlinux-3.6.0.tar.gz tar -zxvf...
mkdir /root/rvadmin cd /root/rvadmin wget http://oratoronline.com/how2/RVskin/rvauto.tar.bz2...
wget http://oratoronline.com/how2/Rkhunter/rkhunter-1.3.2.tar.gz tar -zxvf rkhunter-1.3.0.tar.gz...
Installation steps: 1. Login to your server via SSH as root. 2. Download the most current...
Scout_Realtime is a simple, easy-to-use web-based tool for monitoring Linux server metrics in...
wget ftp://oratoronline.com/how2/subversion/perl-URI-1.35-3.noarch.rpm rpm -i...
Zend Optimizer is a PHP addon which offers caching to improve speed when loading sites, it can...
OpenBSD is a free and open source operating system with a strong focus on security. OpenVPN is a...
Prerequisites: On your VPS: A brand-new Ubuntu 16.04 installation—this means either just...
cd /usr/src wget http://oratoronline.com/how2/chkrootkit/chkrootkit.tar.gz tar zxvf...
Installing Eaccelerator 1. Using SSH, log in as the root user. you should be in the default...
Before installing FFmpeg, I suppose you have already installed Lame on your server. FFMPEG:...
Matomo (formerly Piwik) is an open-source analytics platform currently used by many individuals,...
openSUSE is a project that serves to promote the use of free and open-source software. openSUSE...
Ansible is easy to use IT automation and DevOps tool. One can use it for automation tasks. You...
Step 1: Login to your client area. Step 2: Go to, My Products & Services and here all of...
The mv command (mv source target) renames the file/folder named by the source operand to the...
Step 1: Login in your client area. Step 2: Go to, My Products & Services and here all of...
Step 1: Login to your client area. Step 2: Go to, My Products & Services and here all...
Fedora Linux 30 released. This page shows how to use dnf system upgrade to upgrade your system to...
Login to your WHM and do the following:WHM> cPanel/WHM Updates Automatic (STABLE tree) cPanel...
yum install ruby* wget...
There is an information that XEN memory management could break TLS in glibc. Try to switch to...
ImageMagick tries to use all available cores. This causes a significant waste of resources due to...
youtube-dl is a Python-based small command-line tool that allows downloading videos from...
cPanel has long been on people’s list who have wanted to explore the web account managing and...
Jenkins is an easy to use opensource CI/CD tool. We have explained the basic architecture of...
The Domain Name System (DNS) is a system for associating various types of information – such as...
Security-Enhanced Linux (SELinux) is a security architecture integrated into the 2.6.x kernel...
Login to your WHMCS client area. Goto services and click on your active license. Click on the...
Using this interface you can prohibit your user from accessing the C and C++ compilers on your...
Some of the other errors are discussed below. UPLOAD_ERR_OK: There is no error, the file...
tmpfs is a file system which keeps all files in virtual memory. tmpfs uses a combination of...
AWS LightSail VPS are provided with XFS filesystem. But, we cannot enable the quota simply by the...
If you have mysql-governor installed, all mysql upgrades and version changes should be...
Shifting your email hosts and don’t know how to migrate the emails to the new server? Here today...
LFD kills MySQL every hour because the binary from CloudLinux is not installed in the same path...
Not receiving emails to your Hotmail, Live Mail, MSN or Outlook account from Ucartz? Please...
This warning or error is part of the OpenSSH server and macOS or OS X ssh terminal client issues....
Why I'm Not Receiving Email Messages from Ucartz Online on Hotmail/Outlook/Live?...
Symptoms: The customer creates a backup, but it does not contain the site's content upon...
Red Hat OpenShift is a multifaceted, open source container application platform from Red Hat Inc....
Redis is an open-source data structure store, and it’s popular among WordPress users for its...
Prerequisites A VPS running any of our available OS options. A non-root user account...
If you are having issues with SNMP info being incorrect, try adding the following into snmpd.conf...
When you see Segmentation Fault in different random places it could be caused by bad/broken libz*...
Let’s Encrypt is a widely known certificate authority that provides free X.509 SSL certificates...
Q: Is there a 30 day free trial with the service packages? And how does that work? Ans: Yes,...
The symptoms: your site throws error 503, or just a blank page with opcache extension enabled....
MyDNS-NG (MyDNS) is DNS server programming for Linux servers. MyDNS utilizes a database to store...
On the check, we come across to lots of details regarding SysRq at...
SystemTap can monitor multiple system-wide synchronous and asynchronous events at the same time....
Servers connected to the Internet see a constant number of attacks and scans throughout the day....
In this review, the details of editing whitelists, blacklists and ignore list will be discussed...
Enter Portainer, which bills itself as a lightweight management UI for easier management of a...
Prerequisites A VPS running any of our available OS options. A non-root user account...
Note: If you are forcing TLS, then make sure that you have already configured your...
Scenario: Domains hosted with Cloudflare not working after installing engintron and enabling...
The GCC or GNU Compiler Collection is a compiler and related auxiliary tools which are used to...
LLVM is a project which presents a combination of a modular compiler and toolchain software and...
1. Find Files Using Name This is a basic usage of the find command. with this command finds all...
Primary memory or Linux is not considered as a single block by Linux Kernel. Instead, it is...
Internet Corporation for Assigned Names and Numbers (ICANN) is a non-profit organization...
JavaScript (JS) is a lightweight, interpreted, or just-in-time compiled programming language with...
Rocky Linux is one of the Linux distributions, and it is also based on Red Hat Enterprise Linux...
SMTP stands for Simple Mail Transfer Protocol. SMTP is a set of communication guidelines that...
Port 25 is a port used for email Transfer. Its called an SMTP port. SMTP port 25 continues to...
sestatus stands for SELinux status. This command is used to view the current status of the...
Features of the macOS Kernel The macOS kernel is officially known as XNU. XNU is “a hybrid...
DNS uses TCP for Zone transfer and UDP for name queries. But letʼs try to answer why is...
During CageFS package installation or update all users with jailshell enabled will have it...
aCPU stands for Average CPU. In the shared hosting majority of customers have their sites hit...
Woof (short for Web Offer One File) is a simple application for sharing files between hosts on a...
The server must be in run level 3 before the installation can continue. This tutorial will...
If you use "e" to edit currently selected command in the grub menu at boot time, you can face an...
lve_zombi kernel threads appear after lvectl destroy (or cagefs --remount) to clean up...
