Knowledge Base
427 articles and guides on knowledge base from the NexonHost team — page 5 of 18.
How to List Users in Linux.
How To List Users In Linux. This tutorial will show you how to list users in Linux systems. Have you ever wanted to list all users in your Linux system or to count the number of users in the system? There are commands to create a user, delete a user, list logged in users, but…
Read article →How to Install Asterisk on CentOS 7
How To Install Asterisk On CentOS 7 This tutorial will guide you through the steps required to install Asterisk 15 on CentOS 7. Disable Selinux If SELinux is set to enforcing mode, Asterisk will not function correctly. To disable SELinux security features, open the /etc/selinux/config file and set…
Read article →How to Install R on CentOS 7
How To Install R On CentOS 7 This tutorial will teach you how to install R on CentOS 7 and how to install R packages from the official Comprehensive R Archive Network (CRAN) . Installing R on Centos At the time of writing the latest stable version of R is version 3.5. To install…
Read article →How to Install Google Chrome Web Browser on CentOS 7.
How To Install Google Chrome Web Browser On CentOS 7. This tutorial explains how to install the Google Chrome web browser on CentOS 7. The same instructions apply for any RHEL based distribution, including Fedora and Scientific Linux. Installing Google Chrome on CentOS Follow the steps listed…
Read article →How to Install Tomcat 9 on CentOS 7.
How To Install Tomcat 9 On CentOS 7. This tutorial covers the steps required to install Tomcat 9.0 on CentOS 7. Tomcat is an open-source implementation of the Java Servlet, JavaServer Pages, Java Expression Language, and Java WebSocket technologies. Install OpenJDK Tomcat 9 requires Java SE 8 or…
Read article →How to List Installed Packages on CentOS.
How To List Installed Packages On CentOS. In this tutorial, we will show you how to list and filter installed packages on CentOS. Knowing how to list installed packages on your CentOS system can be helpful in situations where you need to install the same packages on another machine or if you want…
Read article →How to Change the SSH Port.
How To Change The SSH Port. This tutorial explains how to change the default SSH port in Linux. We will also show you how to configure your firewall to allow access to the new SSH port. By default, SSH listens on port 22. Changing the default SSH port adds an extra layer of security to…
Read article →How to Edit Your Hosts File on Linux, Windows, and macOS.
How To Edit Your Hosts File On Linux, Windows, And MacOS. In this article, we’ll provide instructions about how to modify the hosts file on Linux, macOS, and Windows. The hosts file is used to map domain names (hostnames) to IP addresses. It is a plain-text file used by all operating systems…
Read article →How to Configure Automatic Updates with yum-cron on CentOS 7.
How To Configure Automatic Updates With Yum-Cron On CentOS 7. In this tutorial, we will go through the process of configuring automatic updates on CentOS 7. The same instructions apply for CentOS 6. If you manage multiple CentOS machines, manually updating the system packages sep be time-consuming.
Read article →How to generate SSH Keys on Windows with PuTTYgen.
How To Generate SSH Keys On Windows With PuTTYgen. This tutorial explains how to generate SSH keys on Windows with PuTTYgen. We will also show you how to set up an SSH key-based authentication and connect to your remote Linux servers without entering a password. The two most popular mechanisms are…
Read article →How to Install TensorFlow on CentOS 7.
How To Install TensorFlow On CentOS 7. This tutorial will walk you through how to install TensorFlow on CentOS 7. TensorFlow can be installed system-wide, in a Python virtual environment, as a Docker container or with Anaconda . Installing TensorFlow on CentOS TensorFlow supports both Python 2 and…
Read article →How to Install GCC Compiler on CentOS 7.
How To Install GCC Compiler On CentOS 7. This tutorial explains how to install the GCC compiler on CentOS 7. We’ll explain how to install the distro stable version and the newer version of GCC available from the SCL repository. Installing GCC on CentOS The default CentOS repositories contain a…
Read article →How to Install Nginx on Debian 10.
How To Install Nginx On Debian 10. In this tutorial, we’ll explain how to install and manage Nginx on Debian 10 Buster. Install Nginx The Nginx package is included in the default Debian Buster repositories. The installation is pretty straightforward, just run the following commands as root or user…
Read article →How to Install Updates on CentOS 7.
How To Install Updates On CentOS 7. In this tutorial, we will show you how to manually update system packages on CentOS 7. The same instructions apply for CentOS 6. Updating Packages on CentOS RPM is a packaging system used by Red Hat and its derivatives such as CentOS. Yum is the default package…
Read article →How to List and Delete UFW Firewall Rules.
How To List And Delete UFW Firewall Rules. In this tutorial, we will cover how to list and delete UFW firewall rules. UFW stands for Uncomplicated Firewall, and is a user-friendly frontend for managing iptables (netfilter) firewall rules. It is the default firewall configuration tool for Ubuntu…
Read article →How to List Groups in Linux.
How To List Groups In Linux This tutorial explains how to show all groups a user is a member of. We will also explain how to list all members of a group. Linux Groups There are two types of groups that a user can belong to: Primary or login group – is the group…
Read article →How to use apt command in Linux.
How To Use Apt Command. This guide serves as a quick reference for the apt commands. Most of the apt commands must be run as a user with sudo privileges. apt is a command-line utility for installing, updating, removing, and otherwise managing deb packages on Ubuntu, Debian, and related Linux…
Read article →How to Set DNS Nameservers on Ubuntu 18.04
How To Set DNS Nameservers On Ubuntu 18.04 The Domain Name System (DNS) is a central part of the web’s infrastructure, providing a way to translate domain names into IP addresses. You can think of the DNS as the Internet’s phone book. Each device connected to the Internet is uniquely identified by…
Read article →How To Add Apt Repository in ubuntu.
How To Add Apt Repository In Ubuntu. In this tutorial, we will show you two ways to add apt repository on Ubuntu and Debian systems. The first method is by using the add-apt-repository command and the second one is to manually add the repository using a text editor. Apt Sources On Ubuntu and all…
Read article →How to remove the bond0 interface in Ubuntu 20.4.
How To Remove The Bond0 Interface In Ubuntu 20.4. Network bonding (also called “NIC teaming”) is a method for combining multiple network interfaces to form a single, logical network interface for increased bandwidth, fault tolerance, or both. In Ubuntu, the bonding configuration is stored in the…
Read article →How to Mount ISO File.
How To Mount ISO File. In this tutorial, we will explain how to mount ISO files on Linux. An ISO file is an archive file that typically contains the complete image of a CD or DVD. For example, most operating systems such as Windows, Linux, and macOS are distributed as ISO images. ISO files can…
Read article →How to Set Up SSH Keys on Debian 10
How To Set Up SSH Keys On Debian 10 This article describes how to generate SSH keys on Debian 10 systems. We will also show you how to set up an SSH key-based authentication and connect to remote Linux servers without entering a password. Creating SSH keys on Debian The chances are that you…
Read article →How to understand difference between LAN and WAN.
How To Understand Difference Between LAN And WAN. In the world of computer networking, two fundamental types of networks play a pivotal role: Local Area Networks (LANs) and Wide Area Networks (WANs). LANs are the networks you encounter on a daily basis in your home or office, while WANs are…
Read article →Networking Layer Structure: OSI vs. TCP/IP
Networking Layer Structure: OSI Model Vs. TCP/IP Model Communication between networked devices is a fundamental aspect of today’s interconnected world. To understand and manage this complex process, engineers and network specialists use reference models that divide functions and protocols into…
Read article →