International Journal of Engineering Applied Sciences and Technology, 2019 Vol. 4, Issue 5, ISSN No. 2455-2143, Pages 444-454 Published Online September 2019 in IJEAST (http://www.ijeast.com) 444 USES AND APPLICATIONS OF UBUNTU: A TECHNICAL GUIDE Ilias Gkrekos Dept. of Industrial Design and Production Engineering, University of West Attica Athens, Greece Avraam Chatzopoulos Dept. of Industrial Design and Production Engineering, University of West Attica Athens, Greece Michail Papoutsidakis Dept. of Industrial Design and Production Engineering, University of West Attica Athens, Greece Wai Kong Lee UTAR University Dept. of Information and Communication Technology Kampar, Malaysia Abstract— This paper deals with the uses and applications of the Ubuntu operating system. This work is divided into two parts. The first part is about introducing which will be presented what is the computing system, operating system, kernel, UNIX, GNU/Linux, the advantages and disadvantages of GNU/Linux, the shell, the terminal, distribution, GNU/Linux desktop environment and the GNU/Linux file system and some introductory things about the Ubuntu operating system. The second part concerns only the Ubuntu operating system for the Ubuntu Desktop version. In particular, you first learn how to download and install it. The following are the desktop, its programs and applications and network connections. Also refer to hardware and software. In addition, advanced Ubuntu functions are recorded and possible problems are addressed. Finally, make the presentation of Ubuntu derivatives. Keywords— UBUNTU, Operating system, GNU/Linux I. INTRODUCTION A. Computing system – The computer system consists of two parts: hardware and software. Hardware is defined as the set of devices included in the computing system. The software refers to all the programs that the computing system can perform. The software is divided into two pieces. The first part refers to the operating system and the second part refers to the applications (programs) [1]. B. Computing system – The operating system is a set of programs that accepts the commands given by the user and translates these commands into the necessary processes they need to execute [1]. C. Kernel – When referring to the kernel we actually refer to the basic part of an operating system. This section interferes with the hardware of the computer. The kernel is the one that manages its system resources (CPU, Memory, Devices) which is automatically done, allocates them to the executable applications and ensures that they run smoothly. Finally, he is responsible for the communication between software and hardware. Kernels are divided into monolithic kernels, microkernels, hybrid kernels and exokernels [2]. D. UNIX – UNIX is defined as a multiuser and multitasking operating system. The development of UNIX was made by AT & T Bell's laboratories in the 1960s and 1970s. The UNIX operating system is composed of three pieces. The first piece refers to the kernel. The second part refers to the shell that acts as the intermediate link between the user and the kernel. Finally, the third part refers to the rest of the programs. The features of UNIX are multiuser, multitasking and timesharing [3]. E. GNU/Linux – The GNU project began with the aim of developing an operating system that will be free software. "Free software means that users have the freedom to perform, copy, distribute, study, change and improve the software". This work was begun in September 1983 by Richard Stallman and his development began in January 1984.More specifically, GNU is an operating system that is similar to a UNIX operating system but unlike UNIX, GNU is free software. The GNU name you are going to "from the backward acronym" GNU's Not Unix". Because as we mentioned GNU is a functional system similar to the UNIX operating system its system design is modular. This design makes it possible to import software components from other manufacturers into the GNU.GNU systems nowadays use the Linux kernel and this combination gives us the GNU/Linux operating system. GNU/Linux is an operating system made up of free software. It is similar to the UNIX operating system, except that the entire source code is written as free software under the GNU General Public License. Simply put, GNU/Linux is an open source operating system. GNU/Linux gives the user a variety