LINUX OPERATING SYSTEM DOWNLOAD FREE FULL

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LINUX BIBLE NINTH EDITIONWEB COMPANION

LINUX BIBLE NINTH EDITIONWEB COMPANION

GNOME 3 desktop software packages and choose GNOME 3 as thedefault desktop environment on your Ubuntu system.Getting other Linux distributionsIn previous editions of the Linux Bible, we described many different Linuxdistributions. While this made the book’s coverage very wide, it did not make it verydeep. For that reason, we decided to focus this edition primarily on Fedora and RedHat Enterprise Linux (which are very similar) and touch on Ubuntu (which gives youa flavor of how such things as software packaging and service management can bedone on different Linux distributions).That said, you still may be interested in exploring different Linuxdistributions for different reasons. This section includes a list of some other popularLinux distributions, along with links for obtaining those distributions.Debian GNU/LinuxDebian offers thoroughly tested Linux operating system releases that manyLinux consultants and experts use because of Debian’s excellent software packagingand stability. Many other popular Linux distributions, such as Ubuntu, Linux Mint,KNOPPIX and Damn Small Linux, are all based on Debian. You can downloadDebian GNU/Linux from here:http://www.debian.org/distrib/KNOPPIX LinuxKNOPPIX was one of the first popular live CD Linux distributions and offerssome unique features that set it apart from other bootable Linux distributions. It wasone of the first live CD Linux systems to work immediately with a large number ofvideo cards and network interfaces. Features in KNOPPIX also made it easy to saveyour data to alternate media (such as a USB drive), making your KNOPPIX sessions
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Ebook Modern operating systems (4th edition) Part 2

Ebook Modern operating systems (4th edition) Part 2

(BQ) Part 2 book Modern operating systems has contents Multiple processor systems, security, case study 1 linux, case study 2 windows vista, case study 3 symbian os, operating system design, reading list and bibliography.

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preface :virtualization,concurrency, andpersistence

preface :virtualization,concurrency, andpersistence

To Everyone Welcome to this book We hope you’ll enjoy reading it as much as we enjoyed writing it. The book is called Operating Systems: Three Easy Pieces, and the title is obviously an homage to one of the greatest sets of lecture notes ever created, by one Richard Feynman on the topic of Physics F96. While this book will undoubtedly fall short of the high standard set by that famous physicist, perhaps it will be good enough for you in your quest to understand what operating systems (and more generally, systems) are all about. The three easy pieces refer to the three major thematic elements the book is organized around: virtualization, concurrency, andpersistence. In discussing these concepts, we’ll end up discussing most of the important things an operating system does; hopefully, you’ll also have some fun along the way. Learning new things is fun, right? At least, it should be. Each major concept is divided into a set of chapters, most of which present a particular problem and then show how to solve it. The chapters are short, and try (as best as possible) to reference the source material where the ideas really came from. One of our goals in writing this book is to make the paths of history as clear as possible, as we think that helps a student understand what is, what was, and what will be more clearly. In this case, seeing how the sausage was made is nearly as important as understanding what the sausage is good for1. There are a couple devices we use throughout the book which are probably worth introducing here. The first is the crux of the problem. Anytime we are trying to solve a problem, we first try to state what the most important issue is; such a crux of the problem is explicitly called out in the text, and hopefully solved via the techniques, algorithms, and ideas presented in the rest of the text. In many places, we’ll explain how a system works by showing its behavior over time. These timelines are at the essence of understanding; if you know what happens, for example, when a process page faults, you are on your way to truly understandinghowvirtualmemoryoperates. Ifyoucomprehendwhattakesplace when a journaling file system writes a block to disk, you have taken the first steps towards mastery of storage systems. There are also numerous asides and tips throughout the text, adding a little color to the mainline presentation. Asides tend to discuss something relevant (but perhaps not essential) to the main text; tips tend to be general lessons that can be applied to systems you build. An index at the end of the book lists all of these tips and asides (as well as cruces, the odd plural of crux) for your convenience. We use one of the oldest didactic methods, the dialogue, throughout the book, as a way of presenting some of the material in a different light. These are used to introduce the major thematic concepts (in a peachy way, as we will see), as well as to review material every now and then. They are also a chance to write in a more humorous style. Whether you find them useful, or humorous, well, that’s another matter entirely. Atthebeginningofeachmajorsection, we’llfirstpresentanabstractionthatan operating system provides, and then work in subsequent chapters on the mechanisms, policies, and other support needed to provide the abstraction. Abstractions are fundamental to all aspects of Computer Science, so it is perhaps no surprise that they are also essential in operating systems. Throughout the chapters, we try to use real code (not pseudocode) where possible, so for virtually all examples, you should be able to type them up yourself and run them. Running real code on real systems is the best way to learn about operating systems, so we encourage you to do so when you can. In various parts of the text, we have sprinkled in a few homeworks to ensure that you are understanding what is going on. Many of these homeworks are little simulations of pieces of the operating system; you should download the homeworks, and run them to quiz yourself. The homework simulators have the following feature: by giving them a different random seed, you can generate a virtually infinite set of problems; the simulators can also be told to solve the problems for you. Thus, you can test and retest yourself until you have achieved a good level of understanding. The most important addendum to this book is a set of projects in which you learn about how real systems work by designing, implementing, and testing your own code. All projects (as well as the code examples, mentioned above) are in the C programming languageKR88; C is a simple and powerful language that underlies most operating systems, and thus worth adding to your toolchest of languages. Two types of projects are available (see the online appendix for ideas). The first are systems programming projects; these projects are great for those who are new to C and UNIX and want to learn how to do lowlevel C programming. The second type are based on a real operating system kernel developed at MIT called xv6 CK+08; these projects are great for students that already have some C andwanttogettheirhandsdirtyinsidetheOS.AtWisconsin,we’verunthecourse in three different ways: either all systems programming, all xv6 programming, or a mix of both.
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INSTANT KALI LINUX

INSTANT KALI LINUX

Partition editor.This will present a GUI representation of the partition of your current operating system. Carefullyresize it to leave enough space (12 GB minimum) for the Kali installation.Once the partition has been resized on the hard disk, ensure you select the Apply All Operationsoption. Exit GParted and reboot Kali Linux.5Instant Kali LinuxStep 3 – beginning with the installationOnce we are back to the home screen, select Graphical install. The initial few screens of theinstallation will ask you for language selection, location selection, keyboard, and so on. We needto be careful while setting up the root password. The default root password for Kali is toor.Dual boot onlyOnce we are through with this, the next important step is selectingthe partition to install the operating system to. We will have to use thesame unallocated space that we created moments ago using GParted.Once the partition is selected, Kali will take over and install the operating system. The processwill take some time to complete. After the installation is complete, the system startup screenwill now give you the option to boot either in Kali Linux or another operating system, which iscalled a (dual boot) configuration.Installing Kali as a virtual machineSetting up Kali over virtualization software is easy. Kali officially provides a VMware image thatcan be downloaded from its official website (http://www.kali.org/downloads). It can beimported inside a VMware player, when it starts working.To set up Kali Linux using Virtual Box, we will need the same ISO file downloaded earlier and a
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Cybrary advanced pen slides

CYBRARY ADVANCED PEN SLIDES

Debian based custom attack platform Preinstalled with penetration testing tools I’ve installed a few more for this class Root is the superuser on a Linux system with full privileges (use at your own risk) By default on Kali we only have the Root user. On a typical Linux system we would have unprivileged users with Sudo privileges to use Root temporarily

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ĐỀ THI VÀ TÀI LIỆU THI TUYỂN VIÊN CHỨC MÔN TIN HỌC VĂN PHÒNG TRÌNH ĐỘ B NĂM – 2014

ĐỀ THI VÀ TÀI LIỆU THI TUYỂN VIÊN CHỨC MÔN TIN HỌC VĂN PHÒNG TRÌNH ĐỘ B NĂM – 2014

Câu 1. Trong thẻ View của hộp thoại Folder Option.Mục nào sau đây cho phép thay đổi cách thể hiện đường dẫn thư mục trên thanh địa chỉ của cửa sổ: A. Mục Hide protected operating system file B. Mục Show hidden files and folders C. Mục Show My Document on Desktop D. Mục Display the full path in the address bar Câu 2. Trong Windows để thay đổi ngày giờ hệ thống ta thực hiện: A. StartProgramsAccessoreisDate and Time B. StartSettingsControl PanelDate and Time C. StartProgramsControl PanelDate and Time D. Start ProgramsDate and Time Câu 3. Để định dạng màu nền cho tất cả các slide trong MSPowerPoint, sau khi chọn Format  Background  Fill Effects và chọn cách tô màu, sau đó ta chọn thao tác nào sau đây? A. Kích chuột vào nút lệnh Cancel B. Kích chuột vào nút lệnh Preview C. Kích chuột vào nút lệnh Apply D. Kích chuột vào nút lệnh Apply to All
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Locality and The Fast File System

Locality and The Fast File System

When the UNIX operating system was first introduced, the UNIX wizard himself Ken Thompson wrote the first file system. We will call that the “old UNIX file system”, and it was really simple. Basically, its data structures looked like this on the disk: The super block (S) contained information about the entire file system: how big the volume is, how many inodes there are, a pointer to the head of a free list of blocks, and so forth. The inode region of the disk contained all the inodes for the file system. Finally, most of the disk was taken up by data blocks. The good thing about the old file system was that it was simple, and supported the basic abstractions the file system was trying to deliver: files and the directory hierarchy. This easytouse system was a real step forward from the clumsy, recordbased storage systems of the past, and the directory hierarchy a true advance over simpler, onelevel hierarchies provided by earlier systems. 41.1 The Problem: Poor Performance The problem: performance was terrible. As measured by Kirk McKusick and his colleagues at Berkeley MJLF84, performance started off bad andgotworseovertime, tothepointwherethefilesystemwasdelivering only 2% of overall disk bandwidth Themainissuewasthattheold UNIX filesystemtreatedthedisklikeit was a randomaccess memory; data was spread all over the place without regard to the fact that the medium holding the data was a disk, and thus had real and expensive positioning costs. For example, the data blocks of a file were often very far away from its inode, thus inducing an expensive seek whenever one first read the inode and then the data blocks of a file (a pretty common operation).
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Beyond Physical Memory: Policies

Beyond Physical Memory: Policies

In a virtual memory manager, life is easy when you have a lot of free memory. A page fault occurs, you find a free page on the freepage list, and assign it to the faulting page. Hey, Operating System, congratulations You did it again. Unfortunately, things get a little more interesting when little memory is free. In such a case, this memory pressure forces the OS to start paging out pages to make room for activelyused pages. Deciding which page (or pages) to evict is encapsulated within the replacement policy of the OS; historically, it was one of the most important decisions the early virtual memory systems made, as older systems had little physical memory. Minimally, it is an interesting set of policies worth knowing a little more about. And thus our problem: THE CRUX: HOW TO DECIDE WHICH PAGE TO EVICT How can the OS decide which page (or pages) to evict from memory? Thisdecisionismadebythereplacementpolicyofthesystem, whichusually follows some general principles (discussed below) but also includes certain tweaks to avoid cornercase behaviors. 22.1 Cache Management Before diving into policies, we first describe the problem we are trying to solve in more detail. Given that main memory holds some subset of all the pages in the system, it can rightly be viewed as a cache for virtual memory pages in the system. Thus, our goal in picking a replacement policy for this cache is to minimize the number of cache misses, i.e., to minimize the number of times that we have fetch a page from disk. Alternately, one can view our goal as maximizing the number of cache hits, i.e., the number of times a page that is accessed is found in memory. Knowing the number of cache hits and misses let us calculate the average memory access time (AMAT) for a program (a metric computer
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BÀI THỰC HÀNH WORD SỐ 5 SOURCE WORD 5

BÀI THỰC HÀNH WORD SỐ 5 SOURCE WORD 5

Make your own Angry BirdsLAST year Eddie the pig took Chile by storm. The iPhone game “ePig Dash”, featuring Eddie, dislodged “Angry Birds” to becomethe number-one paid game on the Chilean App Store. By itself, the story of a cute, if flatulent, pig pushing a bunch of irate birds offthe top spot is nothing unusual. What is odd is that the creator of “ePig Dash”, a conjuror and economics teacher, knew little ornothing about programming. Instead he used GameSalad, a do-it-yourself tool for app-makers.DIY is hot. In May Research in Motion, the maker of the BlackBerry, unveiled a kit that allows people with no programming skills tocreate a working app within minutes. Apple, too, has applied for a patent indicating it is also building a DIY tool for iOS, its mobileoperating system. And in March the Massachusetts Institute of Technology released a beta version of App Inventor, which allows evensimpletons to make apps for Android phones.Several start-ups already offer DIY app services. Conduit, a firm which was valued at $1.3 billion after J.P. Morgan acquired a 7%stake for $100m earlier this year, allows people to build mobile apps themselves with a simple graphical interface. AppMakr, a similarservice, has helped to create some 10,000 apps. Users include individuals, small businesses and the Harvard Business Review.AppMakr also offers its users help in bringing apps up to standard before submitting them to Apple’s picky App Store. Other servicespublish to Android and Windows, or bypass Apple altogether by creating web apps.Custom-made apps can cost $10,000 or more. By contrast, DIY apps are free to create, with a subscription for continued support.Prices vary, typically from about $30 to $80 a month. Magmito, an app-building service that targets small and medium businesses, hasa plan that costs as little as $50 a year. AppMakr offers a free, ad-supported service.The democratisation of technology is not without drawbacks. Apple’s App Store already has some 550,000 apps. Google offers450,000 for download on its Android operating system. The coming deluge of apps made by amateurs will see those numbers swell.Not all will shine. “There’s a lot of garbage on YouTube. But once in a while you find a gem and everybody passes it around,” saysTed Iannuzzi of Magmito. Professional app-makers may not be shaking in their boots just yet. But the clever ones, like AppMakr, aremoving from creating stuff for mobile phones to creating the stuff that creates the stuff for mobile phones. App-creating softwarecould be the machine tools of the mobile world.
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TÌm hiểu phần mềm Maxima

TÌm hiểu phần mềm Maxima

Maxima là hệ thống đại số máy tính (computer algebra system) được xây dựng bởi đội ngũ chuyên gia của MIT vào năm 1982, và dựa trên hệ đại số Macsyma Được viết bằng ngôn ngữ Lisp và có thể chạy trên hầu hết nền tảng POSIX như OS X, Linux, windows, android Là phần mềm miễn phí, gọn nhẹ

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tổng hợp từ vựng KET

TỔNG HỢP TỪ VỰNG KET

http://1001dethi.com/ download free không giới hạn sách ngoại ngữ.

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A comparison of the push and pull production systems at their optimal designs under the economic consideration

A comparison of the push and pull production systems at their optimal designs under the economic consideration

The term “push” and “pull” have been used to explain a wide variety of production inventory systems. The distinction refers to a specific attribute, which can be identified by observing the mechanisms for controlling material flow on the shop floor and a specific policy for the management of inventories and production schedules. This paper gives an attempt to compare these systems under their optimal settings under a constraint resource. Two optimal-seeking methods (Taguchi method and Response Surface Methodology) are used to suggest the optimized design of the system under an economic term, which is the profit generated from the system. Then, a fair comparison can be made where each system is operating at its optimal design. Results from this study will reveal an interesting outcome, letting us know the impact of the push and pull mechanisms on the systems’ operating costs as well as their profits.
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tài liệu luyện thi C1

TÀI LIỆU LUYỆN THI C1

http://1001dethi.com/ download free không giới hạn sách ngoại ngữ.

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BAI1 CAI ĐAT COMPOSER LARAVEL

BAI1 CAI ĐAT COMPOSER LARAVEL

BÀI 1 : CÀI ĐẶT COMPOSER & LARAVELB1 : Vào website Laravel để download sourcehttps://github.com/laravel/laravelHoặc có thể download bộ Laravel 5 Fullhttp://khoapham.vn/laravel5/source.zipB2 : Copy source vào htdocsB3 : Vào website Composer để download Composer mới nhấthttps://getcomposer.org/download/B4 : Copy file composer.phar vào thư mục gốc của sourceLaravelB5 : Tạo biến môi trường cho phpB5 : Quay lại thư mục Laravel sử dụng tổ hợp phímShift + Chuột phải > Open Command Window HereGõ đoạn mã kiểm tra composer đã tồn tại chưa lên cmd :php composer.pharB6 : Tiến hành cài đặt laravel (download thư viện Laravel)Yêu cầu phải có tài khoản Github nếu yêu cầuVới lệnh :php composer.phar installB7 : Quá trình cài đặt thành công
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Ebook Gray hat hacking (3rd edition) Part 2

Ebook Gray hat hacking (3rd edition) Part 2

(BQ) Part 1 book Gray hat hacking has contents Ethics of ethical hacking, ethical hacking and the legal system, proper and ethical disclosure, social engineering attacks, physical penetration attacks, insider attacks, using the backtrack linux distribution, managing a penetration test,... and other contents.

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CAE cambridge certificate in advanced english 4 public 2010 book | Audio

CAE CAMBRIDGE CERTIFICATE IN ADVANCED ENGLISH 4 PUBLIC 2010 BOOK | AUDIO

Audio full Cambridge Certificate in Advanced English: https:www.youtube.comchannelUCkPKakCNFDB3rQc4dnIyJgplaylists?sort=ddview=50shelf_id=14 Download full Cambridge Certificate in Advanced English book 1 to 6: https:sites.google.comsitehienbookshareenglishbookcae CAE cambridge certificate in advanced english 4 public 2010 book:

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XÁC SUẤT THỐNG KÊ ÔN THI CAO HỌC

XÁC SUẤT THỐNG KÊ ÔN THI CAO HỌC

Conduct a χ2 test of the hypothesis that the choice of browser is independentof the choice of operating system.8Score:Problem 8. We wish to determine whether professors (currently working) have shorterlast names, on average, than their doctoral advisers (who we assume are retired, so thereis no overlap between professors and advisers). We have the following data, in the format(professor’s last name length, adviser’s last name length):(6, 6), (6, 9), (7, 8), (9, 6), (6, 8), (6, 6), (5, 5), (6, 4), (6, 8), (5, 5), (6, 7), (4, 7), (5, 7), (6, 8), (7, 7), (6, 8).(a) [5 points] Draw a histogram to check whether the differences (professor’slast name minus that professor’s adviser’s last name) are approximately normallydistributed.9Score:Problem 8, continued. The following facts can be calculated from the data (but youare not asked to do so): The professors’ last names have a standard deviation of 1.1, theadvisers’ last names have a standard deviation of 1.4, and the differences have a standarddeviation of 1.7. The average professor last name length is 6.0, the average adviser last namelength is 6.8, and the average difference is -0.8.(b) [7 points] Is there strong evidence that professors have shorter last namesthan their advisers?Justify your answer by conducting an appropriate hypothesis test at significance level
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