Informatyka
Essential Linux Commands. 100 Linux commands every system administrator should know
Paul Olushile
The role of a system administrator is ever-evolving, with the Linux command line at its core. This makes Linux command-line mastery an essential skill to demonstrate your ability to efficiently manage and maintain systems efficiently. Essential Linux Commands addresses a diverse range of topics, including package management, file manipulation, networking strategies, system monitoring, and diagnostic tools. Each command is intricately explained to eliminate any ambiguity, ensuring ease of implementation in real-world scenarios.This book explains how to use SELinux to maintain security, run Linux machines on AWS Cloud, and transfer and download files to remote systems. With the help of practical examples and use cases, you’ll not only gain a thorough understanding of a command’s syntax but also grasp its functional breadth and limitations. The book also explores commands frequently used by system administrators to check network card statistics and firewall rules.Whether you’re a beginner or an experienced administrator, this book is an invaluable resource, filling in the gaps in your skill set and helping you improve your skills and expertise in Linux administration.
Et al. Because not all research deserves a Nobel Prize
B. McGraw
Tired of the same old math, science, statistics, and programming memes people post online and want something a little more elaborate? This is the book for you.Tremble as we make up all our own facts and data, hand-draw diagrams in MS Paint, and quote from fictional studies and journals. Cower as authors write in the first person because their study is just a little too personal for them. Recoil from the sheer mass of oversimplified methodology, distilling someone's entire thesis into a paragraph of jokes crude enough to make it into a Mike Myers movie.Over the last few years, we have taken arguments that you would normally have after four Jack and cokes at game night and turned them into properly formatted research papers with a writing tone serious enough to confuse the uninitiated. These papers are high-effort jokes by researchers and scientists for researchers and scientists. They cover a range of topics such as the consequences of re-releasing tourists back into Yellowstone National Park after COVID-19, how to play StarCraft competitively online on a quantum computer, and most importantly, how trees around the globe are becoming increasingly radicalized.
Etat czy B2B dla IT - Programista
Kinga Jańczak
Etat czy działalność – to dylemat, przed którym stoi nie jeden programista. Publikacja przedstawia kalkulację opłacalności etatu i pracy w modelu B2B z uwzględnieniem rewolucji podatkowej wynikającej z wejścia w życie Polskiego Ładu. Opracowanie w prosty sposób tłumaczy zawiłości w przepisach, obrazując je w formie konkretnych przykładów wykorzystujących spotykane w branży kwoty. Dzięki takiemu podejściu publikacja stanowi: • symulację składkowo-podatkową w przypadku zatrudnienia na podstawie umowy o pracę, • kalkulację dostępnych form opodatkowania dla programistów w przypadku działalności gospodarczej. Po przeczytaniu opracowania, nie będziesz miał już żadnych wątpliwości czy wybrać etat, czy własną działalność gospodarczą.
Ethereum Projects for Beginners. Build blockchain-based cryptocurrencies, smart contracts, and DApps
Kenny Vaneetvelde
Ethereum enables the development of efficient, smart contracts that contain code. These smart contracts can interact with other smart contracts to make decisions, store data, and send Ether to others.Ethereum Projects for Beginners provides you with a clear introduction to creating cryptocurrencies, smart contracts, and decentralized applications. As you make your way through the book, you’ll get to grips with detailed step-by-step processes to build advanced Ethereum projects. Each project will teach you enough about Ethereum to be productive right away. You will learn how tokenization works, think in a decentralized way, and build blockchain-based distributed computing systems. Towards the end of the book, you will develop interesting Ethereum projects such as creating wallets and secure data sharing.By the end of this book, you will be able to tackle blockchain challenges by implementing end-to-end projects using the full power of the Ethereum blockchain.
Mayukh Mukhopadhyay
Ethereum is a public, blockchain-based distributed computing platform featuring smart contract functionality. This book is your one-stop guide to blockchain and Ethereum smart contract development. We start by introducing you to the basics of blockchain. You'll learn about hash functions, Merkle trees, forking, mining, and much more. Then you'll learn about Ethereum and smart contracts, and we'll cover Ethereum virtual machine (EVM) in detail. Next, you'll get acquainted with DApps and DAOs and see how they work. We'll also delve into the mechanisms of advanced smart contracts, taking a practical approach.You'll also learn how to develop your own cryptocurrency from scratch in order to understand the business behind ICO. Further on, you'll get to know the key concepts of the Solidity programming language, enabling you to build decentralized blockchain-based applications. We'll also look at enterprise use cases, where you'll build a decentralized microblogging site. At the end of this book, we discuss blockchain-as-a-service, the dark web marketplace, and various advanced topics so you can get well versed with the blockchain principles and ecosystem.
Ethernet. Biblia administratora
Charles E. Spurgeon, Joann Zimmerman
Kompendium wiedzy o sieciach Ethernet! Biblia administratora sieci Ethernet! Standard Ethernet powstał w 1976 roku w ośrodku badawczym firmy Xerox. Wykorzystywany do budowy sieci lokalnych, znajduje zastosowanie praktycznie w każdym miejscu. Sieci Ethernet spotkasz zarówno w mieszkaniach czy domach, jak i w biurach czy centrach danych. W zależności od budżetu, jakim dysponujesz, możesz zbudować sieć dostosowaną do własnych potrzeb. Nowoczesne sieci Ethernet pozwalają na niezawodne przesyłanie danych z ogromnymi prędkościami. W Twoje ręce oddajemy biblię wiedzy o sieciach Ethernet, która odpowie na wszystkie nurtujące Cię pytania oraz zaprezentuje nowoczesne techniki wykorzystania tych sieci. Przekonasz się, jak wygląda proces automatycznej negocjacji oraz jak zasilać urządzenia za pomocą Ethernetu. W kolejnych rozdziałach znajdziesz charakterystyczne elementy popularnych sieci 10, 100 i 1000 Mb/s oraz niezwykle wydajnych sieci o prędkości dochodzącej do 400 Gb/s. Trzecia część tej książki została poświęcona budowie systemu Ethernet. Poznasz tu systemy okablowania strukturalnego, dostępne kable, złącza oraz przełączniki. Książka ta jest obowiązkową pozycją na półce każdego administratora, który chce poznać swoją sieć od podszewki. Dzięki tej książce: poznasz historię standardu Ethernet zrozumiesz zasadę jego działania zobaczysz, jaki potencjał kryją sieci Ethernet nauczysz się projektować wydajne rozwiązania poznasz tajniki działania Twojej sieci
Christian Cote, Matija Lah, Madina Saitakhmetova
ETL is one of the most common and tedious procedures for moving and processing data from one database to another. With the help of this book, you will be able to speed up the process by designing effective ETL solutions using the Azure services available for handling and transforming any data to suit your requirements.With this cookbook, you’ll become well versed in all the features of SQL Server Integration Services (SSIS) to perform data migration and ETL tasks that integrate with Azure. You’ll learn how to transform data in Azure and understand how legacy systems perform ETL on-premises using SSIS. Later chapters will get you up to speed with connecting and retrieving data from SQL Server 2019 Big Data Clusters, and even show you how to extend and customize the SSIS toolbox using custom-developed tasks and transforms. This ETL book also contains practical recipes for moving and transforming data with Azure services, such as Data Factory and Azure Databricks, and lets you explore various options for migrating SSIS packages to Azure. Toward the end, you’ll find out how to profile data in the cloud and automate service creation with Business Intelligence Markup Language (BIML).By the end of this book, you’ll have developed the skills you need to create and automate ETL solutions on-premises as well as in Azure.
Michael Stack
Event-driven architecture in Golang is an approach used to develop applications that shares state changes asynchronously, internally, and externally using messages. EDA applications are better suited at handling situations that need to scale up quickly and the chances of individual component failures are less likely to bring your system crashing down. This is why EDA is a great thing to learn and this book is designed to get you started with the help of step-by-step explanations of essential concepts, practical examples, and more.You’ll begin building event-driven microservices, including patterns to handle data consistency and resiliency. Not only will you learn the patterns behind event-driven microservices but also how to communicate using asynchronous messaging with event streams. You’ll then build an application made of several microservices that communicates using both choreographed and orchestrated messaging.By the end of this book, you’ll be able to build and deploy your own event-driven microservices using asynchronous communication.