Bash Cookbook: Solutions And Examples For Bash ...
For system administrators, programmers, and end users, shell command or carefully crafted shell script can save you time and effort, or facilitate consistency and repeatability for a variety of common tasks. This cookbook provides more than 300 practical recipes for using bash, the popular Unix shell that enables you to harness and customize the power of any Unix or Linux system.
bash Cookbook: Solutions and Examples for bash ...
bash Cookbook teaches shell scripting the way Unix masters practice the craft. It presents a variety of recipes and tricks for all levels of shell programmers so that anyone can become a proficient user of the most common Unix shell -- the bash shell -- and cygwin or other popular Unix emulation packages. Packed full of useful scripts, along with examples that explain how to create better scripts, this new cookbook gives professionals and power users everything they need to automate routine tasks and enable them to truly manage their systems -- rather than have their systems manage them.
Carl Albing is currently a Distinguished Visiting Professor in the Department of Computer Science at the U.S. Naval Academy where he is teaching courses on programming languages and on High Performance Computing. Prior to this he was writing software for some of the biggest and fastest computers in the world as a software engineer for Cray, Inc. As an independent consultant, he is comfortable programming with C, Java, bash and much more. Carl is the coauthor of two books, one on Java development on Linux and his latest, the O'Reilly "bash Cookbook". A former software consultant, manager, analyst and programmer with an amazing breadth of software experience, Carl has worked with companies in the US, Canada and Europe. He has worked for large companies and small startups, in technical as well as in managerial and marketing roles. Carl's software projects, past and present, involve the design and development of distributed computing software, medical image processing applications, compilers, medical devices, web-based factory floor automation, and more. Carl's education includes a Ph.D. in Computer Science as well as a B.A. degree in Mathematics and an International MBA. He has spoken at conferences and training seminars in the US, Canada and Europe as well as local high schools and colleges. Carl enjoys speaking at user groups and seminars on Linux, C, Java, and bash topics.
JP Vossen has been working with computers since the early 80s and has been in the IT industry since the early 90s, specializing in Information Security since the late 90s. He's been fascinated with scripting and automation since he first understood what an autoexec.bat was, and was delighted to discover the power and flexibility of bash and GNU on Linux in the mid-90s. He has previously written for Information Security Magazine and SearchSecurity.com, among others. On those few occasion when he's not in front of a computer, he is usually taking something apart, putting something together, or both.
Shell scripting is a way to harness and customize the power of any Unix system, and an essential skill for Unix users, system administrators, and even professional Mac OS X developers. But beneath this simple promise lies a treacherous ocean of variations in Unix commands and standards. This thoroughly revised edition of bash Cookbook teaches shell scripting the way Unix masters practice the craft.
Since macOS is a UNIX, there is a shell to execute Unix commands and scripts. On macOS the default shell is bash. bash has been around for a long time. You can write very complex and powerful scripts. However the syntax is often quite arcane and there are many pitfalls for the unexperienced scripter.
"...this is a great bash scripting resource and should find a good home on any scripter's bookshelf. It provides enough instruction to help a new-ish user understand the deeper power of bash scripting while having enough breadth and depth to serve as an invaluable resource for the experienced scripting guru."
Carl Albing is currently an Assoc. Professor of Computer Sciene atBethel University,Arden Hills, MN. He previously spent two years as a Research Professor in the Data Science and Analytics Group at the Naval Postgraduate School.Prior to that he was a Distinguished Visiting Professor in the Department of Computer Science at the U.S. Naval Academy where he taught courses on Programming Languages and Compilers, on High Performance Computing and on Advanced Shell programming.Before entering academia he was writing software for some of the biggest and fastest computers in the world as a software engineer for Cray Inc. (now a part of HP Enterprise)A teacher, researcher, consultant, manager, analyst and programmer with an amazing breadth of software experience, Carl has worked with companies in the US, Canada and Europe. He has worked for large companies and small startups, in technical as well as in managerial and marketing roles. Carl's education includes a Ph.D. in Computer Science as well as an undergraduate degree in Mathematics and an International MBA. He has spoken at conferences, universities, and training seminars in the US, Canada, UK and Europe. Carl enjoys speaking at user groups and seminars on a variety of topics related to bash.
Use the bash resource to execute scripts using the Bash interpreter. This resource may also use any of the actions and properties that are available to the execute resource. Commands that are executed with this resource are (by their nature) not idempotent, as they are typically unique to the environment in which they are run. Use not_if and only_if to guard this resource for idempotence.
Rather than a book or tutorial, you might want to look at some of the init scripts that start up your machine. Understanding these will give you a good grounding in bash scripting and provide you with a lot more insight into how your machine runs -- and what you can do when it doesn't...
When a terminal or shell is run, the Bash shell is executed with a set of parameters and commands specific to the user's bash profile. This profile is often called the .bashrc and can be used to contain command aliases, shortcuts, environment variables, and other user enhancements, such as prompt colors. It is located at /.bashrc or /.bash_profile.
When you are looking to run a binary in the directory you are currently working in, you can use either ./script.sh, bash script.sh, or even the full path. Obviously, there are advantages and disadvantages to each approach.
Somebody by the last name of Bourne put together sh for the first time for the *nix platform. Then a bunch of other people contributed tools and etc. Eventually the Bourne shell (sh) evolved into the Bourne-Again shell (bash). This set of tools (while not sharing ANY of the code-base, obviously) is based on the fruits of their excellent design labors. 041b061a72