Category «Linux»

Download E-books Wicked Cool Shell Scripts: 101 Scripts for Linux, OS X, and UNIX Systems PDF

By Dave Taylor

All pcs operating Linux, Mac OS X, or Unix-like working platforms have a command line interface that provides clients a robust replacement to handling their pcs and studying programming fundamentals. clients can write small courses, or scripts, that run within the command line "shell" to accomplish daily initiatives like renaming documents or processing text.

Like the best-selling first variation, this revision of Wicked Cool Shell Scripts presents the entire resource code for over a hundred brief shell scripts that clear up universal difficulties, can be utilized to customize a user's computing atmosphere, and are only simple pleasing. The instruments contain an interactive calculator, a inventory tracker, a password supervisor, a climate checker, and an internet site seek engine.

This revision contains 22 brand-new scripts, a brand new bankruptcy on image-processing, and a collection of scripts to paintings with cloud-based providers like Dropbox and iCloud.

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Download E-books Pro Bash Programming: Scripting the GNU/Linux Shell (2nd Edition) PDF

By Chris Johnson, Jayant Varma

Professional Bash Programming teaches you the way to successfully make the most of the Bash shell on your programming. The Bash shell is an entire programming language, no longer only a glue to mix exterior Linux instructions. through taking complete good thing about Shell internals, Shell courses can practice as snappily as utilities written in C or different compiled languages. and you'll see how, with no assuming Unix lore, you could write expert Bash 4.3 courses via commonplace programming techniques.

This moment variation has up to date for Bash 4.3, and plenty of scripts were rewritten to lead them to extra idiomatically Bash, taking higher good thing about gains particular to Bash. you can learn, comprehend, and may educate you the way to become familiar with Bash programming with no drowning you in pages and pages of syntax.

Using this booklet it is possible for you to to exploit the shell successfully, make scripts run swifter utilizing growth and exterior instructions, and know the way to beat many universal error that reason scripts to fail. This e-book is ideal for all starting Linux and Unix method directors who are looking to be in complete regulate in their platforms, and very become familiar with Bash programming.

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Download E-books Command Line Kung Fu: Bash Scripting Tricks, Linux Shell Programming Tips, and Bash One-liners PDF

By Jason Cannon

Become a Linux Ninja with Command Line Kung Fu!

Do you think that you want to lock your self in a basement analyzing cryptic guy pages for months on lead to order to have ninja like command line talents? actually, when you had anyone proportion their strongest command line information, tips, and styles you would retailer your self loads of time and frustration. What for those who may perhaps glance over the shoulder of an exceptional buddy that simply occurred to be a command line guru? What in the event that they not just confirmed you the instructions they have been utilizing, yet why they have been utilizing them and precisely how they labored? And what if that good friend took the time to jot down it all down so that you can confer with it everytime you cherished? good, a chum did simply that. Command Line Kung Fu is jam-packed with dozens of counsel and over a hundred sensible real-world examples. you will not locate theoretical examples during this booklet. The examples reveal the best way to clear up real difficulties and attain useful objectives. The strategies are effortless to discover, too. each one bankruptcy covers a particular subject and teams similar counsel and examples jointly. for instance, if you would like support extracting textual content from a dossier glance within the "Text Processing and Manipulation" bankruptcy. additionally, a finished index is integrated. so that it will locate each instance the place a given command is used -- no matter if it is not the most topic of the end -- glance within the index. it is going to record each position within the ebook the place that command looks. this is just a few of what you are going to examine by way of studying Command Line Kung Fu:

  • How to quick and simply repeat instructions on your shell history
  • Shortcuts for grabbing particular phrases out of your shell background to exploit on your present command
  • How to save lots of a duplicate of your command line consultation for later reference
  • How to strip out clean traces and reviews from files
  • How to regulate colorized textual content while makes use of pipes and pagers
  • Ways to rework textual content: from altering case to substituting characters and more
  • How to extract particular blocks of textual content from documents or streams of input
  • A fast tip to mend universal typos
  • How to edit documents over the network
  • How to check the variations among documents in your neighborhood desktop and a distant one
  • How to create and use SSH tunnels
  • Ways to make sure what courses are listening on what ports
  • How to kill all of the strategies for a given person with a unmarried command
  • Strategies for facing multi-hop SSH connections
  • How to disconnect from a server in a fashion that would let you choose up the place you left off
  • How to automate software program installs that require person input
  • Shell scripting tips
  • How to instantly preserve repeating a command until eventually it succeeds
  • The correct solution to delete a dossier that's being written to
  • How to surf the net from the command line... and extra importantly find out how to obtain whatever from the net and engage with HTTP APIs
  • Ways to figure out who and what's utilizing the main disk space
  • How to safe your internet browser consultation while utilizing an open wifi hotspot
  • How to generate random passwords from the command line
  • Two counsel for simply developing backups
  • Tips for dealing with tar archives
  • How to switch a string in a number of records right away with only one command
  • and a lot more...

What you examine in Command Line Kung Fu applies to any Linux distribution together with Ubuntu, Debian, Linux Mint, RedHat, Fedora, OpenSUSE, Slackware, and extra.

Scroll up, click on the "Buy Now With 1-Click" button to get your black belt in Linux Command Line Kung Fu.

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Download E-books bash Pocket Reference (Pocket Reference (O'Reilly)) PDF

By Arnold Robbins

It's basic: you must understand how to paintings with the bash shell for you to get to the guts of Mac OS X, Linux, and different Unix platforms. up-to-date for the newest model of bash, this concise little booklet places all the crucial information regarding bash at your fingertips. you are going to fast locate solutions to demanding questions that usually arise if you end up writing shell scripts -- What characters do you want to cite? How do you get variable substitution to do just what you will want? How do you employ arrays? -- and lots more and plenty more.

If you are a person or programmer of any Unix version, or if you are utilizing bash on home windows, you will find this pocket reference crucial. This publication covers:

  • Invoking the Shell
  • Syntax
  • Functions
  • Variables
  • Arithmetic Expressions
  • Command historical past
  • Programmable of completion
  • Job keep watch over
  • Shell thoughts
  • Command Execution
  • Coprocesses
  • Restricted Shells
  • Built-in instructions

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Download E-books Learning Apache Cassandra - Manage Fault Tolerant and Scalable Real-Time Data PDF

Key Features

  • Learn the right way to set up and use Cassandra from the floor up
  • Design wealthy schemas that catch the relationships among diverse info kinds utilizing compound fundamental keys
  • Master the complex positive aspects on hand in Cassandra 2.0 via a step by step educational that builds a real-world application's database layer.

Book Description

Cassandra is a dispensed database that stands proud for its strong characteristic set and intuitive interface, whereas nonetheless delivering the excessive availability and scalability of a dispensed store.

Starting from fitting Cassandra and growing your first keyspace, to getting to know different desk constructions Cassandra deals and exploring the newest and strongest beneficial properties of the Cassandra question Language, CQL3, this ebook explores every one subject during the lens of a real-world instance software. With lots of examples, assistance, and transparent reasons, you will grasp compound fundamental keys, assortment columns, light-weight transactions, and lots of different complicated points of Cassandra.

By the tip of the ebook, you can be absolutely built to construct robust, scalable Cassandra database layers on your applications.

What you are going to learn

  • Install Cassandra and create your first keyspace
  • Choose the best desk constitution for the duty to hand in various scenarios
  • Use variety slice queries for effective facts access
  • Effortlessly deal with concurrent updates with assortment columns
  • Ensure information integrity with light-weight transactions and logged batches
  • Understand eventual consistency and use the appropriate consistency point on your situation
  • Implement most sensible practices for info modeling and access

About the Author

Mat Brown is a qualified software program engineer in Brooklyn, manhattan. In his profession, he has keen on construction consumer-facing net and cellular functions for a number of businesses; he at present works at Genius.

Table of Contents

  1. Getting up and operating with Cassandra
  2. The First Table
  3. Organizing similar Data
  4. Beyond Key-value Lookup
  5. Establishing Relationships
  6. Denormalizing info for max Performance
  7. Expanding Your info Model
  8. Collections, Tuples, and User-defined Types
  9. Aggregating Time-series Data
  10. How Cassandra Distributes Data

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Download E-books Pro Linux System Administration (Expert's Voice in Open Source) PDF

By James Turnbull, Peter Lieverdink

We can all be Linux specialists, supplied we make investments the time in studying the craft of Linux management. Pro Linux method Administration makes it effortless for small- to medium–sized companies to go into the realm of zero–cost software program working on Linux and covers all of the distros you have to use, together with crimson Hat, Ubuntu, Debian, and CentOS. Authors, and platforms infrastructure specialists James Turnbull, Peter Lieverdink, and Dennis Matotek take a layered, component–based method of open resource company platforms, whereas education procedure directors because the developers of commercial infrastructure.

If you must enforce a SOHO or SMB Linux infrastructure, Pro Linux method Administration in actual fact demonstrates every thing you would like. you will find this ebook additionally presents a superb framework to maneuver ahead and extend your corporation and linked IT functions, and you may enjoy the services and skilled information of the authors. Pro Linux procedure Administration covers

  • An creation to utilizing Linux and unfastened and open resource software program to affordably and successfully deal with your enterprise
  • A layered version that permits your infrastructure to develop together with your enterprise
  • Easy and simple–to–understand directions together with configurations, examples, and huge real–world tricks and suggestions

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Download E-books Puppet Essentials PDF

Get up and operating speedy utilizing the ability of Puppet to regulate your IT infrastructure

About This Book

  • Quickly familiarize yourself with writing your individual show up courses for Puppet
  • Speedily learn how to organize your personal Puppet infrastructure
  • Avoid universal pitfalls so one can swiftly seize Puppet's complicated features

Who This e-book Is For

If you are an skilled IT expert or a brand new Puppet consumer, Puppet necessities offers you all you want to understand to move from install to complicated automation very quickly in any respect. event with method operations and server administration in addition to the Ruby language, is useful to get the main out of this book.

What you'll Learn

  • Write and hire person Puppet manifests
  • Understand how Puppet implements method abstraction
  • Deploy the Puppet grasp and its agents
  • Leverage and expand Facter to summarize your systems
  • Create modular and reusable Puppet code
  • Extend your code base with publicly to be had Puppet modules
  • Separate good judgment from info utilizing Hiera
  • Combine your new abilities to control huge, advanced systems

In Detail

With this booklet, you can be up and working with utilizing Puppet to control your IT platforms. Dive correct in with easy instructions so you might use Puppet at once, after which blitz via a sequence of illustrative examples to become familiar with the entire most vital elements and contours of Puppet.

Install Puppet, write your first manifests, after which instantly positioned the Puppet instruments to genuine paintings. Puppet necessities unearths the cutting edge constitution and method of Puppet via step by step directions to stick with robust use circumstances. study universal troubleshooting strategies and the master/agent setup in addition to the development blocks for complex capabilities and issues that push Puppet to the restrict, together with sessions and outlined forms, modules, assets, and leveraging the pliability and expressive energy carried out by means of Facter and the Hiera toolchain. ultimately, ship Puppet to the skies with useful assistance on find out how to use Puppet to regulate a complete program cloud.

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Download E-books The Book of Postfix: State-of-the-Art Message Transport PDF

By Ralf Hildebrandt

Best practices for Postfix--the well known replacement to Sendmail.Developed with safeguard and pace in brain, Postfix has develop into a favored replacement to Sendmail and is derived preinstalled in lots of Linux distributions because the default mailer. The ebook of Postfix is an entire advisor to Postfix no matter if used at domestic, as a mailrelay or virus-scanning gateway, or as an organization mailserver. sensible examples convey easy methods to take care of day-by-day demanding situations like holding mail clients from junk mail and viruses, dealing with a number of domain names, and providing roaming access.

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Download E-books Linux Timesaving Techniques For Dummies PDF

By Korry Douglas, Susan Douglas

* previously often called crimson Hat Linux, the Fedora center distribution is a superb, no-cost replacement to home windows, Solaris, and different pricey working structures* crimson Hat at present controls an envisioned seventy percentage of the Linux industry within the united states* This publication provides skilled and first-time Fedora clients sixty concise, step by step, timesaving recommendations to assist them practice projects with Fedora extra successfully* prepared through subject, the thoughts are offered within the pleasant, easy-to-understand For Dummies kind, with at the least technical jargon* The recommendations run the gamut of end-user, procedure management, and improvement initiatives, starting from machine, dossier process, RPM, and database easy methods to web server, email server, networking, procedure tracking, defense, and Linux kernel tips* Covers the newest unencumber of pink Hat's Fedora middle distribution

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