Linux Quotes

How long will the patch take?” Venkat asked. “Should be pretty much instant,” Jack answered. “Watney entered the hack earlier today, and we confirmed it worked. We updated Pathfinder’s OS without any problems. We sent the rover patch, which Pathfinder rebroadcast. Once Watney executes the patch and reboots the rover, we should get a connection.” “Jesus, what a complicated process,” Venkat said. “Try updating a Linux server sometime,” Jack said.

Try updating a Linux server sometime,” Jack said.

Theory and practice sometimes clash. And when that happens, theory loses. Every single time.

Anyway, in a world of cheap PCs and fast Internet links, we find pretty consistently that the only really limiting resource is skilled attention.

Every good work of software starts by scratching a developer’s personal itch.

That’s why Linux and Wikipedia and Firefox work.

Jesus, what a complicated process,” Venkat said. “Try updating a Linux server sometime,” Jack said.

Linus Torvalds, the creator of Linux, is an expert of understatement in his leadership of Linux development community. When eager programmers would ask him, ‘”What part of Linux should I work on?’ his answer would usually be, ‘”Let me know when you find out’ (p.286).

I did learn fairly early that the best and most effective way to lead is by letting people do things because they want to do them, not because you want them to. The best leaders also know when they are wrong, and are capable of pulling themselves out. And the best leaders enable others to make decisions for them. Let me rephrase that. Much ofLinux's success can be attrib­uted to my own personality flaws: 1) I'm lazy; and 2) I like to get credit for the work of others.

A lot of people believe in working long days and doing dou­ble, triple, or even quadruple shifts. I'm not one of them. Neither Transmeta nor Linux has ever gotten in the way of a good night's sleep. In fact, if you want to know the honest truth, I'm a firm believer in sleep. Some people think that's just being lazy, but I want to throw my pillow at them. I have a perfectly good excuse, and I'm standing by it: You may lose a few hours of your produc­tive daytime if you sleep, oh, say, ten hours a day, but those few hours when you are awake you're alert, and your brain functions on all six cylinders. Or four, or whatever.

Jesus, what a complicated process,” Venkat said. “Try updating a Linux server sometime,” Jack said. After a moment of silence, Tim said, “You know he was telling a joke, right? That was supposed to be funny.” “Oh,” said Venkat. “I’m a physics guy, not a computer guy.” “He’s not funny to computer guys, either.” “You’re a very unpleasant man, Tim,” Jack said.

some dreams are meant to be handed over to God. To be remolded and redirected in keeping with his will. Sometimes our plans do not fit with the plans of God. Linux helped . . .

Jesus, what a complicated process,” Venkat said. “Try updating a Linux server sometime,” Jack said. After a moment of silence, Tim said, “You know he was telling a joke, right? That was supposed to be funny.

The sched_setscheduler() system call changes both the scheduling policy and the priority of the process whose process ID is specified in pid. If pid is specified as 0, the attributes of the calling process are changed.

Because I want to know how it works.

A lot of the machines that Google is built on—commodity is the polite word for them—they're regular PCs and so they're not always the most reliable.

Linux is awesome, Until you can afford a Mac

As a system administrator, it's in your best interest to befriend data center technicians and bribe them with coffee, caffeinated soft drinks, and alcoholic beverages

By 2009 the Debian version 5.0 of GNU/Linux had 324 million source lines of code, and one study estimated that it would have cost about $8 billion to develop by conventional means

Installing kali linux but don't know about hacking is like getting married but have no idea what is sex.

graphical user interfaces make easy tasks easy, while command line interfaces make difficult tasks possible

The host tool is built into most Linux systems including Kali. We can access it by opening a terminal

using Cryptcat, an encrypted version of the Netcat tool, which hackers use to read and write data over TCP/IP and user datagram protocol connections. “Pan seems to be working in the Linux

Watney entered the hack earlier today, and we confirmed it worked. We updated Pathfinder’s OS without any problems. We sent the rover patch, which Pathfinder rebroadcast. Once Watney executes the patch and reboots the rover, we should get a connection.” “Jesus, what a complicated process,” Venkat said. “Try updating a Linux server sometime,” Jack said. After a moment of silence, Tim said, “You know he was telling a joke, right? That was supposed to be funny.” “Oh,” said Venkat. “I’m a physics guy, not a computer guy.” “He’s not funny to computer guys, either.

It might seem that security should gradually improve over time as security problems are discovered and corrected, but unfortunately this does not seem to be the case. System software is growing ever more complicated, hackers are becoming better and better organized, and computers are connecting more and more intimately on the Internet. Security is an ongoing battle that can never really be won.

Paul Buchheit: Then you have what we do with PCs, and that's technically pretty challenging—to take this big network of machines that are unreliable and build a big, reliable storage system out of it.

Investors are still thinking through the consequences of reinventing the software industry as one with an explicit focus on service rather than closed intellectual property, and will be for some time to come.

If you had gathered the same people who created Linux, installed them in a giant conference room for a year, and asked them to devise a new operating system, it’s doubtful that anything so revolutionary would have occurred

The combination of GNU and Linux created an operating system that has been ported to more hardware platforms, ranging from the world’s ten biggest supercomputers to embedded systems in mobile phones, than any other operating system.

the earliest open-source creators didn’t share office space—often they didn’t even live in the same country. Their collaborations took place largely in the ether. This is not an insignificant detail. If you had gathered the same people who created Linux, installed them in a giant conference room for a year, and asked them to devise a new operating system, it’s doubtful that anything so revolutionary would have occurred—for reasons we’ll explore in the rest of this chapter.

Good craftsmanship implies socialism. The workings of a modern Japanese auto plant or a Linux chat room might have expanded their sympathy for collaboration of other sorts, but still, all three disputed the pursuit of quality simply as a means to profit.

But you weren’t born,” I tell him. “I wrote an algorithm based on the Linux operating kernel. You’re an open-source search engine married to a dialog bot and a video compiler. The program scrubs the Web and archives a person’s images and videos and data—everything you say, you’ve said before.” For

NIH syndrome is characterized by a decision to discard all of what the other developer accomplished with the intent of demonstrating a superior solution. Such an act of sheer egotism demonstrates little interest in preserving the best of another's work and using it as a springboard to newer heights.

Such a leader knows how to empower groups to self-organize. When it’s done right, a governance structure by consensus naturally emerges, as happened both with Linux and Wikipedia. “What astonishes so many people is that the open source model actually works,” Torvalds said. “People know who has been active and who they can trust, and it just happens.

Filenames

I was born in debian, school in ubuntu, worked with some distro, and finally on slackware I go home.

Assembly programmers are the only programmers who can truly claim to be the masters, and that's a truth worth meditating on.

A process is an instance of an executing program. In this section, we elaborate on this definition and clarify the distinction between a program and a process.

To understand this first event, you need to know that we rely on Unix and Linux machines to store the thousands of computer files that comprise all the shots of any given film. And on those machines, there is a command—/bin/rm -r -f *—that removes everything on the file system as fast as it can. Hearing that, you can probably anticipate what’s coming: Somehow, by accident, someone used this command on the drives where the Toy Story 2 files were kept. Not just some of the files, either. All of the data that made up the pictures, from objects to backgrounds, from lighting to shading, was dumped out of the system. First, Woody’s hat disappeared. Then his boots. Then he disappeared entirely. One by one, the other characters began to vanish, too: Buzz, Mr. Potato Head, Hamm, Rex. Whole sequences—poof!—were deleted from the drive. Oren

When a process is rescheduled to run on a multiprocessor system, it doesn’t necessarily run on the same CPU on which it last executed. The usual reason it may run on another CPU is that the original CPU is already busy. When a process changes CPUs, there is a performance impact: in order for a line of the process’s data to be loaded into the cache of the new CPU, it must first be invalidated (i.e., either discarded if it is unmodified, or flushed to main memory if it was modified), if present in the cache of the old CPU. (To prevent cache inconsistencies, multiprocessor architectures allow data to be kept in only one CPU cache at a time.) This invalidation costs execution time. Because of this performance impact, the Linux (2.6) kernel tries to ensure soft CPU affinity for a process — wherever possible, the process is rescheduled to run on the same CPU.

Linux remained where he was, more comfortable with his solitary position at the table than he’d ever been before. He felt a childlike ease, so protected, so accepted he could expose his most hidden weaknesses and fears and uncertainties and know all was well, all forgiven, all blessed. The stone he had carried inside was finally dissolving. Inner wounds were now open to healing light, and the gift of hope was like an illumination around him.

The combination of GNU and Linux created an operating system that has been ported to more hardware platforms, ranging from the world’s ten biggest supercomputers to embedded systems in mobile phones, than any other operating system. “Linux is subversive,” wrote Eric Raymond. “Who would have thought that a world-class operating system could coalesce as if by magic out of part-time hacking by several thousand developers scattered all over the planet,

The behavior of retailers when a vendor folds is very revealing. It tells us that they know something the vendors don’t. What they know is this: the price a consumer will pay is effectively capped by the expected future value of vendor service (where “service” is here construed broadly to include enhancements, upgrades, and follow-on projects). In other words, software is largely a service industry operating under the persistent but unfounded delusion that it is a manufacturing industry.

SHORT NOTE ABOUT SHA-1 A lot of people become concerned at some point that they will, by random happenstance, have two objects in their repository that hash to the same SHA-1 value. What then? If you do happen to commit an object that hashes to the same SHA-1 value as a previous object in your repository, Git will see the previous object already in your Git database and assume it was already written. If you try to check out that object again at some point, you’ll always get the data of the first object. However, you should be aware of how ridiculously unlikely this scenario is. The SHA-1 digest is 20 bytes or 160 bits. The number of randomly hashed objects needed to ensure a 50% probability of a single collision is about 280 (the formula for determining collision probability is p = (n(n-1)/2) * (1/2^160)). 280 is 1.2 x 10^24 or 1 million billion billion. That’s 1,200 times the number of grains of sand on the earth. Here’s an example to give you an idea of what it would take to get a SHA-1 collision. If all 6.5 billion humans on Earth were programming, and every second, each one was producing code that was the equivalent of the entire Linux kernel history (3.6 million Git objects) and pushing it into one enormous Git repository, it would take roughly 2 years until that repository contained enough objects to have a 50% probability of a single SHA-1 object collision. A higher probability exists that every member of your programming team will be attacked and killed by wolves in unrelated incidents on the same night.

Torvalds decided to use the GNU General Public License, not because he fully embraced the free-sharing ideology of Stallman (or for that matter his own parents) but because he thought that letting hackers around the world get their hands on the source code would lead to an open collaborative effort that would make it a truly awesome piece of software. “My reasons for putting Linux out there were pretty selfish,” he said. “I didn’t want the headache of trying to deal with parts of the operating system that I saw as the crap work. I wanted help.”136

Paper wallets can be generated easily using a tool such as the client-side JavaScript generator at bitaddress.org. This page contains all the code necessary to generate keys and paper wallets, even while completely disconnected from the internet. To use it, save the HTML page on your local drive or on an external USB flash drive. Disconnect from the internet and open the file in a browser. Even better, boot your computer using a pristine operating system, such as a CD-ROM bootable Linux OS. Any keys generated with this tool while offline can be printed on a local printer over a USB cable (not wirelessly), thereby creating paper wallets whose keys exist only on the paper and have never been stored on any online system. Put these paper wallets in a fireproof safe and “send” bitcoin to their bitcoin address, to implement a simple yet highly effective “cold storage” solution. Figure 4-8 shows a paper wallet generated from the bitaddress.org site.

Intellectual property rights are sometimes hailed as the mother of creativity and invention. However, Marshall Brain points out that many of the finest examples of human creativity—from scientific discoveries to creation of literature, art, music and design—were motivated not by a desire for profit but by other human emotions, such as curiosity, an urge to create, or the reward of peer appreciation. Money didn’t motivate Einstein to invent special relativity theory any more than it motivated Linus Torvalds to create the free Linux operating system. In contrast, many people today fail to realize their full creative potential because they need to devote time and energy to less creative activities just to earn a living. By freeing scientists, artists, inventors and designers from their chores and enabling them to create from genuine desire, Marshall Brain’s utopian society enjoys higher levels of innovation than today and correspondingly superior technology and standard of living.

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Methods to produce an android app As the need for android is enhancing in the modern-day world, designers have a much better future in android field. The devices offered in the market are native development kit, android sdk, active next android developer and ADOBE AIR. An android development business ought to employ seasoned, gifted and proficient android designer to get benefits. As Linux running system is really simple to manage, designers are interested in developing android applications. Android designer Melbourne will establish any common app in a much shorter time without difficult work. Android app will please end users just when the application is established utilizing cutting-edge app designer. In android development, one can look for aid of an android designer otherwise android development business that comprehends the user requires. Android app development is an easy job, designers have to evaluate the market methods in the finest method. Android designers need to establish an app with high meaning to get a credibility amongst the public. Visual possessions in the app development have actually to be comprehended by the android designer to get revenues. If designers got positioned in the leading android development, they can understand about different things in a clear way. Android designers have to be really objective while executing the codes due to the fact that to enhance the effectiveness and efficiency of the application. As the need for android is enhancing in the modern-day world, android developer brisbane have a much better future in android field. The devices offered in the market are native development kit, android sdk, active next android developer and ADOBE AIR. An android development business ought to work with skilled, skilled and proficient android designer to obtain benefits. Android app will please end users just when the application is established making use of ingenious app designer. In android development, one can look for aid of an android designer otherwise android development business that comprehends the user requires.

We need to be humble enough to recognize that unforeseen things can and do happen that are nobody’s fault. A good example of this occurred during the making of Toy Story 2. Earlier, when I described the evolution of that movie, I explained that our decision to overhaul the film so late in the game led to a meltdown of our workforce. This meltdown was the big unexpected event, and our response to it became part of our mythology. But about ten months before the reboot was ordered, in the winter of 1998, we’d been hit with a series of three smaller, random events—the first of which would threaten the future of Pixar. To understand this first event, you need to know that we rely on Unix and Linux machines to store the thousands of computer files that comprise all the shots of any given film. And on those machines, there is a command—/bin/rm -r -f *—that removes everything on the file system as fast as it can. Hearing that, you can probably anticipate what’s coming: Somehow, by accident, someone used this command on the drives where the Toy Story 2 files were kept. Not just some of the files, either. All of the data that made up the pictures, from objects to backgrounds, from lighting to shading, was dumped out of the system. First, Woody’s hat disappeared. Then his boots. Then he disappeared entirely. One by one, the other characters began to vanish, too: Buzz, Mr. Potato Head, Hamm, Rex. Whole sequences—poof!—were deleted from the drive. Oren Jacobs, one of the lead technical directors on the movie, remembers watching this occur in real time. At first, he couldn’t believe what he was seeing. Then, he was frantically dialing the phone to reach systems. “Pull out the plug on the Toy Story 2 master machine!” he screamed. When the guy on the other end asked, sensibly, why, Oren screamed louder: “Please, God, just pull it out as fast as you can!” The systems guy moved quickly, but still, two years of work—90 percent of the film—had been erased in a matter of seconds. An hour later, Oren and his boss, Galyn Susman, were in my office, trying to figure out what we would do next. “Don’t worry,” we all reassured each other. “We’ll restore the data from the backup system tonight. We’ll only lose half a day of work.” But then came random event number two: The backup system, we discovered, hadn’t been working correctly. The mechanism we had in place specifically to help us recover from data failures had itself failed. Toy Story 2 was gone and, at this point, the urge to panic was quite real. To reassemble the film would have taken thirty people a solid year. I remember the meeting when, as this devastating reality began to sink in, the company’s leaders gathered in a conference room to discuss our options—of which there seemed to be none. Then, about an hour into our discussion, Galyn Susman, the movie’s supervising technical director, remembered something: “Wait,” she said. “I might have a backup on my home computer.” About six months before, Galyn had had her second baby, which required that she spend more of her time working from home. To make that process more convenient, she’d set up a system that copied the entire film database to her home computer, automatically, once a week. This—our third random event—would be our salvation. Within a minute of her epiphany, Galyn and Oren were in her Volvo, speeding to her home in San Anselmo. They got her computer, wrapped it in blankets, and placed it carefully in the backseat. Then they drove in the slow lane all the way back to the office, where the machine was, as Oren describes it, “carried into Pixar like an Egyptian pharaoh.” Thanks to Galyn’s files, Woody was back—along with the rest of the movie.

Note from the authors: Yes, we have lost our minds. Be forewarned: You will lose yours too.

UNIX. Understanding the meagerly documented, demanding, and complex sources of

Amiga enthusiasts were some of the most resourceful people I’ve ever seen. Who’d have thought you could turn a real–time clock port into a connector for high-speed storage? All of this was only possible because people really understood how all the parts fit together. They knew how to get the best out of the machine because they really knew how the machine worked. These days, I spend my working day trying to make fast things go faster. To have any hope of success, I too need to know how everything works. Companies need people like me to push things forward, but they’re coming across a bit of a problem. People who really know computers inside out are getting much harder to find—we are a dying breed, and this is the situation that the Raspberry Pi Foundation is desperately trying to reverse. So what happened? Well, things changed. Computers went from being the curiosity in the corner to being a

To understand this first event, you need to know that we rely on Unix and Linux machines to store the thousands of computer files that comprise all the shots of any given film. And on those machines, there is a command—/bin/rm -r -f *—that removes everything on the file system as fast as it can. Hearing that, you can probably anticipate what’s coming: Somehow, by accident, someone used this command on the drives where the Toy Story 2 files were kept. Not just some of the files, either. All of the data that made up the pictures, from objects to backgrounds, from lighting to shading, was dumped out of the system. First, Woody’s hat disappeared. Then his boots. Then he disappeared entirely. One by one, the other characters began to vanish, too: Buzz, Mr. Potato Head, Hamm, Rex. Whole sequences—poof!—were deleted from the drive.

We should get you Linux, too. Nobody uses Windows anymore.

For purposes of examining the software market itself, it will be helpful to sort kinds of software by how completely the service they offer is describable by open technical standards, which is well correlated with how commoditized the underlying service has become.

In a future that includes competition from open source, we can expect that the eventual destiny of any software technology will be to either die or become part of the open infrastructure itself. While this is hardly happy news for entrepreneurs who would like to collect rent on closed software forever, it does suggest that the software industry as a whole will remain entrepreneurial, with new niches constantly opening up at the upper (application) end and a limited lifespan for closed-IP monopolies as their product categories fall into infrastructure.

The reason this is a serious issue is that both the pool of users and the pool of talent available to be recruited into open-source cooperation for any given product category is limited, and recruitment tends to stick. If two producers are the first and second to open-source competing code of roughly equal function, the first is likely to attract the most users and the most and best-motivated co-developers; the second will have to take leavings. Recruitment tends to stick, as users gain familiarity and developers sink time investments in the code itself.

on as you learn more complex hacks and tests, you will need a target machines suited for such hacks. The best way to learn to hack Linux systems is to download and install the Metasploitable Linux distribution. The Metasploitable distro is purposefully made to incorporate vulnerabilities that learners like yourself can use for security testing and hacking purposes. The best part is that you can set it up to boot just like an operating system you use for your everyday computing needs or you can set it up in VirtualBox or VMware Workstation platforms. Using Metasploitable Linux OS for your hacking practice is the best way to understand more about the Linux infrastructure, security setup, and how to discover and exploit its vulnerabilities. You can read the documentation of Metasploitable and download the installation ISO from Rapid 7

need to download and install Python, get the recent most stable version from python.org and install it on your computer. If you already have Python installed on your Linux computer, do not uninstall the older 2.x as this may break your operating system. Instead, install the latest version alongside it. You may be required to use the command python3 and not python to initialize the interpreter though. All the information you need is provided on the documentation page of the Python.org website. We recommend you take the time to read the ‘Beginners Guide’ if you are still new to Python. Practical hacking: Free online hacking practice servers There is a saying in the world of information security that the best defense is a good offense. This is what has inspired many cyber security companies to make available deliberately vulnerable websites and servers to encourage developers, auditors, pentesters, system admins, and security professionals to practice their hacking skills online.

Kali Linux: The hacker’s toolbox Frankly speaking, learning and practicing to become a proficient hacker is not as easy as becoming a software developer. This course takes you through the initial steps of discovering hidden vulnerabilities and beating sophisticated security systems. It demands sophistication and creativity among other skills. It goes without saying that Linux is the most preferred operating system for daily use by programmers, hackers, and other computer professionals. This is because of the incredible control the operating system accords the user. If you are new to Linux and are looking to learn all the basics and how to make it work for you, then Kali Linux may not be the ideal starting point for you. It is recommended that you learn the basics with a Ubuntu or Debian-based operating system instead. Having said that, you will find it practical to follow the instructions on how to use Kali for specific hacking purposes in this book whether this will be your first interaction with the OS or you have experience with Linux.

I took 17 computer science classes and made an A in 11 of them. 1 point away from an A in 3 of them and the rest of them didn't matter. Math is a tool for physics,chemistry,biology/basic computation and nothing else. CS I(Pascal Vax), CS II(Pascal Vax), Sr. Software Engineering, Sr. Distributed Systems, Sr. Research, Sr. Operating Systems, Sr. Unix Operating Systems, Data Structures, Sr. Object Oriented A&D, CS (perl/linux), Sr. Java Programming, Information Systems Design, Jr. Unix Operating Systems, Microprocessors, Programming Algorithms, Calculus I,II,III, B Differential Equations, TI-89 Mathematical Reasoning, 92 C++ Programming, Assembly 8086, Digital Computer Organization, Discrete Math I,II, B Statistics for the Engineering & Sciences (w/permutations & combinatorics) -- A-American Literature A-United States History 1865 CLEP-full year english CLEP-full year biology A-Psychology A-Environmental Ethics

A good supervisor can step on your toes without messing up your shine.

Open-source development breaks this bind, making it far easier for tester and developer to develop a shared representation grounded in the actual source code and to communicate effectively about it.

They learned that small programs, like small cars, handled better, were more adaptable, and were easier to maintain than large programs.

System administrators often help organizations develop sensible policies that meet the letter and intent of the law and yet still promote progress and productivity.

Las blockchains privadas y su uso en la banca Una de las plataformas más prometedoras en el ámbito de las blockchains privadas es Ripple (ripple.com). Su especialidad son los pagos internacionales interbancarios, así como el proceso de conversión de divisas. En sí, Ripple es un sistema abierto (cualquiera puede usar Ripple, al igual que Bitcoin o Ethereum), si bien aquellas partes que quieran participar como proveedoras de liquidez para las conversiones de divisas deben estar previamente autorizadas por Ripple. Es, por tanto, un sistema más privado y con un ámbito de confianza más reducido que los públicos descritos anteriormente. Las transacciones internacionales se completan en tan solo 5 o 10 segundos, y en ellas se hace uso de un proceso de subasta a la baja en el que los diferentes proveedores de liquidez compiten para procesar los pagos. Una vez se produce el match, Ripple se encarga del proceso de liquidación entre las dos partes, tarea ejecutada en tiempo real. Otras soluciones son las que ofrecen R3 (con su producto Corda) o Hyperledger, perteneciente a la Fundación Linux. Ambas trabajan en soluciones para la banca y apuestan por un registro distribuido entre las diferentes entidades del consorcio, lo que les confiere la posibilidad de transferir en tiempo real dinero y otros activos digitales mediante tokens.

Sladkey recalls the first time he found and sent a bug to Linus: "My first contribution was in porting some program, probably one of my smaller personal projects. I discovered a bug. Since Linux came with source, my first inclination as a hacker was to take a look under the hood and see if I could fix the problem. I found that although I had never done any kernel work, that I was able to navigate around the code pretty easily and provide a small patch to correct the problem. "With my heart beating and my palms sweating, I composed the most professional message I could muster and sent it off to linus.torvalds@cs.helsinki.fi describing the bug and including my proposed fix. Minutes later he replied something like, 'Yup, that's a bug. Nice investigation. Thanks. Fixed,' and I was hooked.

There were in fact bugs," he recalls, "But the essential difference was in the obviousness of bugs, the repeatability of bugs, and potential for fixing bugs oneself. In this environment, bugs were only temporary delays on a steady road towards excellence and stability.

There is a critical difference (Ryan observes) between saying, “I’m giving you this reward because I recognize the value of your work”, and “You’re getting this reward because you’ve lived up to my standards.” The first does not demotivate; the second does.

The verdict of history seems to be that free-market capitalism is the globally optimal way to cooperate for economic efficiency; perhaps, in a similar way, the reputation-game gift culture is the globally optimal way to cooperate for generating (and checking!) high-quality creative work.

This is quite unlikely to happen to Linux,

The dream of stitching the world into a global village has been embodied in the nomenclature of modern technology—the net is interconnected, the Web is worldwide, media is social. And the dream has fueled a succession of grand collaborative projects, cathedrals of knowledge built without any intention of profiting from the creation, from the virtual communities of the nineties to Linux to Wikipedia to the Creative Commons. It’s found in the very idea of open-source software. Such notions of sharing were once idealistic gestures and the reveries of shaggy inventors, but they have become so much the norm that they have been embraced by capitalism. The business plans of the most spectacularly successful firms in history, Google and Facebook, are all about wiring the world into one big network—a network where individuals work together, in a spirit of altruism, to share information.

That's great, but what book should I read next?  What book would be a great companion

The organization of the software and the organization of the software team will be congruent

For less than the cost of a standard Windows license, you can download GNU tools and a fresh Linux kernel or good free software which you will enjoy much more.

Neurotypicals are Microsoft, you are Linux.” The latter is an open-source computer operating system, which can be tailored. It is less used overall compared to Microsoft, and less understood, but not less good.

This concept can be applied to penetration testers as they need to determine how long it will take to complete a penetration test for a customer and present the report with the findings and security recommendations.

Un shell permite ser ejecutado de forma interactiva cuando acepta comandos directamente desde el teclado, no interactivos cuando aceptas comandos que provienen de un archivo.

- ¿Que opción del comando ls puede ser usado para listar archivos y directorios de forma recursiva?

If Microsoft ever does applications for Linux it means I've won. (spoiler: it did)

See, you not only have to be a good coder to create a system like Linux, you have to be a sneaky bastard too.

When you use the Linux command line, you are almost certainly using a program called the bash shell.

It is said that autism is like having a different operating system from other people. ... Most people are Windows PCs, the arty people are Macs and we run on Linux We will need programs to help us interact with the majority of Windows people. And at our heart is a different, not inferior, operating system.

It is said that autism is like having a different operating system from other people. ... Most people are Windows PCs, the arty people are Macs, and we run on Linux We will need programs to help us interact with the majority of Windows people. And at our heart is a different, not inferior, operating system.

It is said that autism is like having a different operating system from other people. ... Most people are Windows PCs, the arty people are Macs, and we run on Linux. We will need programs to help us interact with the majority of Windows people. And at our heart is a different, not inferior, operating system.

The shell is nothing more than a program that accepts your commands and executes those commands. Said another way, the shell is a command line interpreter.

The superuser on a Linux system is also called root. Anything that can be done on a server can be done by root. However, normal users can only do a subset of the things root can do. Root access is typically restricted to system administrators, but if you happen to support an application on a Linux server you may need root privileges to install, start, or stop it. There are ways to grant specific users root privileges for specific cases. This is often accomplished with the sudo -- SuperUser Do -- program.

Convert Text Files from Windows Format to Linux Format and Vice-Versa $ dos2unix $ unix2dos Sooner or later you're going to be sent a file or download one that uses a pair of CR (carriage return) and LF (line feed) characters to terminate lines in the file.  Those type of files are Windows/DOS formatted.  Unix-like operating systems simply use the LF character to terminate a line.  Sometimes this can cause issues.  To convert the file to a unix-like format, use dos2unix.  To examine the line termination characters use "cat -A" or the "file" command. $

despite a conducive environment and comforting faith, there is unease among the rooms’ inhabitants, a rising tide of something close to fear. They know that a terrible ghost is abroad in the cloisters of Microsoft. The

tombout attributes, chattr is one of magic, It's still immutable whoever you're force as root.

In many cases it makes sense to scale your web servers horizontally while you scale your database servers vertically. 

Unlike Linux or Mac OS X, the Windows Command Prompt is not case sensitive, and does not distinguish between commands or filenames based up the case of the letters in the file name. To return to the previous example, the Command Prompt will interpret COPY, Copy, and copy as the same thing - every one of these will launch the copy command. In the same vein, Command Prompt will view Report.doc, REPORT.doc, and report.doc as the same file

Tab – It shows the completion possibilities for commands or filenames. Ctrl + A – This moves the cursor to the start of the current command line. Ctrl + C – This ends an active computer program and shows the prompt. Ctrl + D – This will log you out of the current session. This key combination is similar to typing logout or exit. Ctrl + E – It moves the cursor to the end of the current command line. Ctrl + H – This is similar to pressing the backspace key on your keyboard. Ctrl + L – This clears the current terminal. Ctrl + R – This searches the command history. Ctrl + Z – This allows you to suspend computer programs.

first of which would threaten the future of Pixar. To understand this first event, you need to know that we rely on Unix and Linux machines to store the thousands of computer files that comprise all the shots of any given film. And on those machines, there is a command—/bin/rm -r -f *—that removes everything on the file system as fast as it can. Hearing that, you can probably anticipate what’s coming: Somehow, by accident, someone used this command on the drives where the Toy Story 2 files were kept. Not just some of the files, either. All of the data that made up the pictures, from objects to backgrounds, from lighting to shading, was dumped out of the system. First, Woody’s hat disappeared. Then his boots. Then he disappeared entirely. One by one, the other characters began to vanish, too: Buzz, Mr. Potato Head, Hamm, Rex. Whole sequences—poof!—were deleted from the drive.

[    1.948637] usbcore: registered new interface driver hub   [    1.948795] usbcore: registered new device driver usb You can combine pipes together. For example, you get the exact same output by using head and displaying only the first three lines of the grep output: root@beaglebone:/tmp# dmesg |grep ‐i usb |head ‐n3   [    1.948582] usbcore: registered new interface driver usbfs   [    1.948637] usbcore: registered new interface driver hub   [    1.948795] usbcore: registered new device driver usb xargs: This is a very powerful filter command that enables you to construct an argument list that you use to call another command or tool. In the following example, a text file args.txt that contains three strings is used to create three new files. The output of cat is piped to xargs, where it passes the three strings as arguments to the touch command, creating three new files a.txt,

You can use rm -rf dir to delete a directory and its contents, but be careful! This is one of the few commands that can do serious damage, especially if you run it as the superuser. The -r option specifies recursive delete to repeatedly delete everything inside dir, and -f forces the delete operation. Don’t use the -rf flags with globs such as a star (*). And above all, always double-check your command before you run it.

there are some problems no Unix command can address.

at* expands to all filenames that start with at. *at expands to all filenames that end with at. *at* expands to all filenames that contain at.

Another shell glob character, the question mark (?), instructs the shell to match exactly one arbitrary character. For example, b?at matches boat and brat.