Book Image

Fundamentals of Linux

By : Oliver Pelz
Book Image

Fundamentals of Linux

By: Oliver Pelz

Overview of this book

Linux is a Unix-like operating system assembled under the model of free and open source software development and distribution. Fundamentals of Linux will help you learn all the essentials of the Linux command line required to get you started. The book will start by teaching you how to work with virtualization software and install CentOS 7 Linux as a VM. Then, you will get to grips with the workings of various command line operations, such as cursor movement, commands, options, and arguments. As you make your way through the chapters, the book will not only focus on the most essential Linux commands but also give an introduction to Bash shell scripting. Finally, you will explore advanced topics, such as networking and troubleshooting your system, and you will get familiar with the advanced file permissions: ACL, setuid, and setgid. Fundamentals of Linux includes real-world tasks, use cases, and problems that, as a system administrator, you might encounter in your day-to-day activities.
Table of Contents (7 chapters)

Searching for files

In this section, we will learn how to search for files in Linux. The man find command, as the name implies, can find files based on versatile criteria. But more than that, you can even apply actions on every search result during execution of the program, which is a very useful feature. Find can take some options to change its default behavior, for example, how to treat files, which are symbolic links during execution of the program. The first few arguments are a list of directories or starting points to start your search in, all the other arguments are search expressions or conditions to find in your search. It's important to discuss what search expressions are. A search expression typically is a test and an action. Tests are typically separated by logical operators. If no operator is given, the end operator is assumed. If the expression contains no action...