1. Free software is free, users can change code, and source code is available to anyone. 2.GNU/Linux is portable, is based on standards, is written in C, has a kernel programming interface, can support many users, and can run multiple tasks. For more information, refer to “What Is So Good about GNU/Linux?” The source code for the operating system is readily available so that students can understand more easily how GNU/Linux works and can modify the code further to understand its operation and change the way it works. For more information, refer to “The Code Is Free” 3.Multiuser operating systems allows the multiple users to access the resources of a single systems at a time or at different time. allows many users to take advantage of the computer’s resources simultaneously. some permit 100’s to 1000 users to take advantage of the computer’s resources simultaneously. They are successful because of the powerful, efficient, stable and secure operating systems like LINUX. it has a capability of providing each user the same data ensuring total privacy from each user even while accessed by 100’s of users simultaneously.
4.The Free Software Foundation (www.fsf.org) is the principal organizational sponsor of the GNU Project. GNU developed many of the tools, including the C compiler, that are part of the GNU/Linux Operating system. Linux is the name of an operating system kernel developed by Linus Torvalds and expanded and improved by thousands of people on the Internet. Torvalds’s kernel and GNU’s tools work together as the GNU/Linux Operating System 5.Linux is written in C. It is successful because a programmer no longer has to resort to assembly language to produce code that would run well. 6.A utility (program), sometimes referred to as a command, is a program that performs a task that is frequently related to the operating system. A utility is simpler than an application program although there is no clear line separating the two. GNU/Linux distributions, such as Red Hat, include many utilities. You can download many utilities from the Internet. Examples of utilities are cp (copies a file), ls (lists information about files), ssh (securely connects to a remote computer), and df (lists information about free space on system devices such as hard disks).
7. Shell is a piece of software that provides an interface for users of an operating system. Shell provides access to the services of a kernel. Shell makes the user’s job faster and easier in many ways. 8.Write a shell script, also called a shell program, or a batch file under DOS. A shell script is one or more command lines contained in a file. Make the file executable and give the name of the file as a command: The shell executes the commands in the file, as though you had typed each command individually. 9.Because it uses a hierarchical structure in shape of a pyramid or (up-rooted) tree to make director and subdirectories. 10.Multiprocessor (having more than one processor) refers to a system with two or more processors or CPUs. Multiprocessing (supporting multiple processes) refers to a system that can process one or more tasks at a time. 11.Using 2 or more CPUs and multi-tasking, gaming, using resource intense programs. 12.Many thousands of people contributed to the GNU/Linux Operating System using the Internet.
This project is unique because such a project, using free software, had never been attempted before. 13.The GPL says you have the right to copy, modify, and redistribute the code covered by the agreement. If you redistribute the code, you must also distribute the same license with the code, making the code and the license inseparable. If you get the source code off the Internet for an accounting program that is under the GPL, modify the code, and then redistribute an executable version of the program, you must also distribute the modified source code and the GPL agreement with it. Because this is the reverse of the way a normal copyright works (it gives rights instead of limiting them), it has been termed a copyleft.