Tutorials

How To Check Disk Space Usage With Ncdu Utility

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In this tutorial, we will show you how to install and configuration of Webuzo on your Linux server. For those of you who didn’t know, Ncdu (NCurses Disk Usage)  is a command-line tool to view and analyze disk space usage on Linux. It can drill down into directories and report space used by individual directories. This way it is very easy to track down space consuming files/directories. This ar...

How To Hide Nginx Server Header

In this tutorial, we will show you how to hide Nginx Server Header on your Linux server. In default Nginx configuration, the server sends HTTP Header with the information of Nginx version number of the Server. The HTTP response header “Server” displays the version number of the server. This information can be used to try to exploit any vulnerabilities in the Nginx, especially if you are runn...

How To Install Nginx on Ubuntu

In this tutorial, we will show you how to install Nginx on Ubuntu. For those of you who didn’t know, Nginx is one of the most popular web servers in the world and is responsible for hosting some of the largest and highest-traffic sites on the internet. It is more resource-friendly than Apache in most cases and can be used as a web server or a reverse proxy. So today I’m going to show you how...

How to install Java on Ubuntu

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In this tutorial, we will show you how to install Java on Ubuntu. For those of you who didn’t know, Java is a programming language and computing platform. It was first released by Sun Microsystems in 1995. Many programs and scripts that require Java to run it, but usually Java are not installed by default on a VPS or Dedicated Server. This article assumes you have at least basic knowledge of ...

How to Fix Apt-Get GPG error NO_PUBKEY Ubuntu 14

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In this tutorial, we will show you how to fix apt-get GPG error NO_PUBKEY on Ubuntu 14.04 LTS.  This morning when I do apt-get update on my new Ubuntu 14.04 server, I got these error messages: Reading package lists... Done W: GPG error: http://security.ubuntu.com trusty-security Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EA...

Linux and Unix TAR Command

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In this tutorial, we will show you various Linux and Unix Tar command examples that might be helping you. For those of you who didn’t know, The tar command used to rip a collection of files and directories into highly compressed archive file commonly called tarball or tar, gzip and bzip in Linux. The tar is most widely used command to create compressed archive files and that can be moved eas...

How To Install Rar/Unrar on CentOS

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In this tutorial, we will show you how to install and configuration of rar/unrar on your CentOS system. For those of you who didn’t know, RAR is the most popular tool for creating and extracting compressed archive (.rar) files, but unfortunately, rar tool doesn’t pre-installed under Linux systems, we need to install it using third-party tools to open, extract, uncompress or unrar archive fil...

How To Install BIND9 Master and Slave DNS Server on Ubuntu

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In this tutorial we will show you how to install BIND9 Master and Slave DNS Server on Ubuntu. BIND is a widely used DNS Server. Ideally, DNS server consist of 2 machines that work together simultaneously, one act as master and the other one act as slave. If your domain registrar doesn't provide you a free DNS server, or if you want to create a custom DNS record, then you might need to host your ...

How To Install and Configure Squid 3 on Ubuntu

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In this tutorial, we will show you how to install and configuration of Squid on your Ubuntu server. For those of you who didn’t know, Squid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. Squid proxy is used by various organisation and internet providers to reduce bandwidth and to increase response time. This article assumes you have at least basic knowledge of Linux, kn...

How To Install FFmpeg and FFmpeg-PHP Extension on CentOS

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For those of you who didn’t know, FFmpeg is a cross-platform solution for streaming audio and video as well as recording and conversion. There’s also a great PHP package called ffmpeg-php that allows for easy use of FFmpeg from inside PHP scripts. In this tutorial i will show you the easy way to install ffmpeg and ffmpeg-php (PHP extension). This article assumes you have at least basic know...