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Linux Text Editor
Everything is file in Linux operating system. So, anyone who wants to work with Linux operating system (specially, Red Hat or CentOS) must learn how to edit files in Linux operating system. Because, it is always prefer to avoid graphical user interface (GUI) for changing system configuration parameters in Linux operating system unlike Windows operating system. You should be expert enough to edit any file in Red hat Linux operating system otherwise you will face a lot of difficulty to maintain your Red Hat Linux operating system. Red Hat Linux files can be edited with command line editor such vi, vim, nano etc or graphical user interface (GUI) editor such as gedit. But Red Hat Linux administrators always prefer to work with command line editor. So, this article is designed to show you how to work with Red Hat Linux command line editor (vi/vim text editor) properly. Vi / Vim Text Editor If you are familiar enough with Windows operating system, you may see notepad or WordPad which is default file editor in Windows operating system. Similarly vim, nano, emac, pico and gedit are various file editors in Red Hat Linux operating system. Among these, vi and vim are the [...]
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Ubuntu Server Set Static IP Address with Netplan | July 1, 2021
Ubuntu Server is one of the most popular open source sever operating systems. Ubuntu Server can be used in production without any hassle. In my previous article, I discussed how to install Ubuntu Server’s latest version (Ubuntu Server 20.04) with LVM. In this article, we are going to see how to assign static IP address in Ubuntu Server with Netplan network management tool. Netplan Since Ubuntu Server 17.10, Netplan is being used as the default network management tool instead of [...]
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Managing Disk Partition with the parted Tool in CentOS 7 | March 2, 2019
As a system administrator, sometimes you may require to manage partitions of your CentOS/Red Hat Linux Operating System. Partition management is always a risky task. But there are some useful tools those are so helpful to manage CentOS/Red Hat Linux disk partition easily. In my previous article, I discussed how to manage CentOS/Red Hat 7 HDD partitions with the fdisk utility. The fdisk tool is only eligible to manage MBR partition table. But GPT partition table is now becoming more [...]
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CentOS 7 Partition Management with fdisk Utility | February 11, 2019
CentOS or Red Hat Linux is a popular server operating system to the system administrators. Almost all the system admins or IT guys who play with mail server, file server, proxy server and so on are so known with CentOS or Red Hat Linux and cannot go a single day without this operating system. The guys who are also wish to be a system admin should be familiar with CentOS or Red Hat operating system. In my previous article, I [...]
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MikroTik UserMan RADIUS Server Customers, Users and Routers | November 13, 2017
MikroTik User Manager RADIUS Server is a centralized user authentication and accounting application that gives the ISP Company or network administrator ability to manage MikroTik RouterOS user, PPP user and Hotspot user so smoothly. There are two methods to install MikroTik User Manager RADIUS Server in your network. You can install User Manager Package either on a physical RouterOS or on a dedicated Server Machine or on a Personal Computer where RouterOS is running. How to install and configure User [...]
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Web Server Configuration in Linux with Apache, MariaDB and PHP | January 2, 2018
Web Server is one of the most important and most used servers today. Without web server internet cannot imagine. Even, the article you are reading is also served by a web server. So, having web server configuration knowledge is beneficial for you, I think. A web server is responsible to serve HTTP (Hypertext Transfer Protocol) contents such as text, image, audio, video etc. to its clients. A lot of web servers are present today such as Apache, IIS, Nginx and [...]
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How to Install MikroTik CHR on VMware Workstation | September 9, 2019
MikroTik is found both RouterBoard where RouterOS and License are prebuilt and RouterOS Application that can be installed on a Physical Machine or Virtual Machine. RouterOS installation on Physical or Virtual Machine has license limitations. Full RouterOS packages cannot be used more than 24 hours without license. So, RouterOS application is not suitable for the Trainee or not suitable to RND purpose. From RouterOS v6.34, MikroTik introduces Cloud Hosted Router (CHR, a new RouterOS version) which has different licensing scheme. [...]
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MikroTik Hotspot Auto Login by MAC Address | July 1, 2020
Hotspot is an awesome service in MikroTik Router. MikroTik Hotspot is popularly used in ISP, Hotel, Airport, Coffee Shop, Enterprise office and many other organizations. By default MikroTik Hotspot uses HTTP CHAP login method where user must provide username and password to get internet service. Sometimes we may face that some users are not eager to provide username and password to get internet service or we cannot ask some users to put username and password to get internet due to [...]
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MikroTik WiFi MAC Authentication with UserMan RADIUS Server | December 23, 2019
MikroTik Wireless Router is popularly used as WiFi AP. MikroTik WiFi AP has a lot of features to tune WiFi network as your requirements. MAC authentication is one the amazing and useful features in MikroTik WiFi. MAC authentication enables filtering MAC address that means no MAC can be able to connect to WiFi AP without authentication. MAC authentication can be done either local database or RADIUS Server. MAC authentication with RADIUS Server provides facility to manage multiple APs from centralized [...]
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How to Import SSL Certificate in MikroTik RouterOS | January 16, 2022
SSL/TLS Certificate is used to make secure communication between server and clients. MikroTik RouterOS has a lot of services such OVPN, SSTP VPN, HTTPS, Hotspot and so on those use SSL/TLS certificate. It is possible to create self-signed certificate in MikroTik RouterOS but self-signed certificate faces untrusted CA warning. So, it is always better to use trusted CA either freemium or premium. In my previous article, I discussed how to get a free SSL/TLS certificate from Zero SSL but Zero [...]
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