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18 Cards in this Set
- Front
- Back
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Why is Linux popular?
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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 simultaneously |
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Why is it popular in academia?
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The source code for the operating system is readily available so students
can understand more easily how Linux works and can modify the code further to understand its operation and change the way it works. |
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What is the Free Software Foundation/GNU?
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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 Linux operating system. Linux is the name of the operating system kernel developed by Linus Torvalds, which has since been expanded and improved by thousands of people on the Internet. Torvalds’s kernel and GNU’s tools work together as the Linux operating system. |
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What is a utility program?
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A utility (program), sometimes referred to as a command, 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. Linux distributions, such as Red Hat Linux, include many utilities. You can also 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). |
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How can you use utility programs and a shell to create your own
applications? |
You can 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 then executes the commands in the file as though you had typed each command individually. (You may need to give the command as ./command.) |
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What is the difference between a multiprocessor and a multiprocessing system?
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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. |
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Approximately how many people wrote Linux? Why is this unique?
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Many thousands of people have contributed to the Linux operating system
using the Internet. This project is unique because a project of this magnitude, using free software, had never been attempted before. |
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What is Free software List 3 characteristics
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You are Free to Study it, redistribute it and modify it.
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What are Multiuser Systems, Why are they successful.
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Systems that allow the users to use all of the systems resources at the same time.
The use of costly resources can be maximized and the cost per user can be minimized. **ITS CHEAP** |
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In what language is Linux written? Why is that important?
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C, C is a higher level portable language and is machine independent.
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What is a shell?
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the shell—the command interpreter—acts as an interface
between you and the operating system |
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How does a shell work with the kernel?
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The shell interprets the command and calls the program you want.
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GNU Project was Started when and by Who?
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Richard Stallman 1983
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Who created Linux?
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Linus Torvalds
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Why is Linux File system referred to as Hierarchical.
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Each user has one home directory and then as many sub directories as needed.
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Why would you want to use a multiprocessing system?
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It allows you to be more efficient and productive because you can do multiple jobs at the same time.
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What are the key terms of the GNU public Liscense?
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You have the right to copy, modify and redistribute the code.
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How does the shell work with the user?
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Provides the user with access to hundreds of utilities, a programming language and job control.
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