Knowledge for Free... Get that job, you aspire for! Want to switch to that high paying job? Or are you already been preparing hard to give interview the next weekend? Do you know how many people get rejected in interviews by preparing only concepts but not focusing on actually which questions will be asked in the interview? Don't be that person this time. This is the most comprehensive Shell Script interview questions book that you can ever find out. It contains: 250 most frequently asked and important Shell Script interview questions and answers Wide range of questions which cover not only basics in Shell Script but also most advanced and complex questions which will help freshers, experienced professionals, senior developers, testers to crack their interviews.

Fluency with a UNIX Shell is mandatory for working within the UNIX operating system. Keeping current, however, can be a challenge. With the UNIX Shell Scripting Interview Guide, you will be sure to be current. Using this book to prepare for a job interview or brush up on a scripting programming language will aid any programmer in acquiring new and applicable skills and knowledge. This book contains a complete reference of common scripting errors, performance tuning examples, and common applications. More than just UNIX documentation and open source rhetoric, this guide explains UNIX Shell Scripting from the perspective of the advanced programmer and administrator so you can be sure to come to any interview prepared. Key topics include: . Graphical user interfaces for UNIX . Advanced features of Bash, Bourne, and Korn . Common errors and troubleshooting . System monitoring and maintenance . Modern command line shells

This is a perfect companion to stand ahead above the rest in today's competitive job market. Rather than going through comprehensive, textbook-sized reference guides, this book includes only the information required immediately for job search to build an IT career. This book puts the interviewee in the driver's seat and helps them steer their way to impress the interviewer. Includes: 201 UNIX Shell Programming Interview Questions, Answers and Proven Strategies for getting hired as an IT professional; Dozens of examples to respond to interview questions; 51 HR Questions with Answers and Proven strategies to give specific, impressive, answers that help nail the interviews.

This book contains top 50 Unix interview questions that are asked in a technical interview. The focus is on commands and concepts inside Unix. It is an important topic for a software developer to know about Unix. This book is a compilation of Unix interview questions after attending dozens of technical interviews in top-notch companies like- HP, Google, Oracle, Ebay, Amazon etc.Each question is accompanied with an answer so that you can save your time while preparing for an interview.The difficulty rating on these Questions varies from a Junior level programmer to Architect level. Once you go through them in the first pass, mark the questions that you could not answer by yourself. Then, in second pass go through only the difficult questions. After going through this book 2-3 times, you will be very well prepared to face a technical interview on Unix for an experienced engineer.Sample questions are:How will you remove all files in current directory? Including the files that are two levels down in a sub-directory.What is the difference between the -v and -x options in Bash shell scripts?What is a Filter in Unix command?What is Kernel in Unix operating system?What is a Shell in Unix OS?What are the different shells in Unix that you know about?What is the first character of the output in ls -l command ?What is the difference between Multi-tasking and Multi-user environment?What is an Inode in Unix?What is the difference between absolute path and relative path in Unix file system?What are the main responsibilities of a Unix Shell?What is a Shell variable?What are the important Shell variables that are initialized on starting a Shell?How will you set the value of Environment variables in Unix?What is the difference between a System Call and a library function?What are the networking commands in Unix that you have used?What is a Pipeline in Unix?What is the use of tee command in Unix?How will you count the number of lines and words in a file in Unix?What is Bash shell?How will you search for a name in Unix files?What are the popular options of grep command in Unix?What is the difference between whoami and who am i commands in Unix?What is a Superuser in Unix?How will you check the information about a process in Unix?What is the use of more command with cat command?What are the File modes in Unix?We wrote a shell script in Unix but it is not doing anything. What could be the reason?What is the significance of 755 in chmod 755 command?How can we run a process in background in Unix? How can we kill a process running in background?How will you create a read only file in Unix?How does alias work in Unix?How can you redirect I/O in Unix?What are the main steps taken by a Unix Shell for processing a command?What is a Sticky bit in Unix?What are the different outputs from Kill command in Unix?How will you customize your environment in Unix?What are the popular commands for user management in Unix?How will you debug a shell script in Unix?What is the difference between a Zombie and Orphan process in Unix?How will you check if a remote host is still alive?How will you get the last executed command in Unix?What is the meaning of "2>&1" in a Unix shell?How will you find which process is taking most CPU time in Unix?What is the difference between Soft link and Hard link in Unix?How will you find which processes are using a file?What is the purpose of nohup in Unix?How will you remove blank lines from a file in Unix?How will you find the remote hosts that are connecting to your system on a specific port in Unix?What is xargs in Unix?

Shell scripting skills never go out of style. It's the shell that unlocks the real potential of Unix. Shell scripting is essential for Unix users and system administrators-a way to quickly harness and customize the full power of any Unix system. With shell scripts, you can combine the fundamental Unix text and file processing commands to crunch data and automate repetitive tasks. But beneath this simple promise lies a treacherous ocean of variations in Unix commands and standards. Classic Shell Scripting is written to help you reliably navigate these tricky waters.Writing shell scripts requires more than just a knowledge of the shell language, it also requires familiarity with the individual Unix programs: why each one is there, how to use them by themselves, and in combination with the other programs. The authors are intimately familiar with the tips and tricks that can be used to create excellent scripts, as well as the traps that can make your best effort a bad shell script. With Classic Shell Scripting you'll avoid hours of wasted effort. You'll learn not only write useful shell scripts, but how to do it properly and portably.The ability to program and customize the shell quickly, reliably, and portably to get the best out of any individual system is an important skill for anyone operating and maintaining Unix or Linux systems. Classic Shell Scripting gives you everything you need to master these essential skills.

Unix Interview Questions You'll Most Likely Be Asked is a perfect companion to stand ahead above the rest in today's competitive job market. Rather than going through comprehensive, textbook-sized reference guides, this book includes only the information required immediately for job search to build an IT career. This book puts the interviewee in the driver's seat and helps them steer their way to impress the interviewer. Includes:a) 200 Unix Interview Questions, Answers and Proven Strategies for getting hired as an IT professionalb) Dozens of examples to respond to interview questionsc) 51 HR Questions with Answers and Proven strategies to give specific, impressive, answers that help nail the interviewsd) 2 Aptitude Tests download available on www.vibrantpublishers.com

Learn how to create and develop shell scripts in a step-by-step manner increasing your knowledge as you progress through the book. Learn how to work the shell commands so you can be more productive and save you time.

O'Reilly's bestselling book on Linux's bash shell is at it again. Now that Linux is an established player both as a server and on the desktop Learning the bash Shell has been updated and refreshed to account for all the latest changes. Indeed, this third edition serves as the most valuable guide yet to the bash shell.As any good programmer knows, the first thing users of the Linux operating system come face to face with is the shell the UNIX term for a user interface to the system. In other words, it's what lets you communicate with the computer via the keyboard and display. Mastering the bash shell might sound fairly simple but it isn't. In truth, there are many complexities that need careful explanation, which is just what Learning the bash Shell provides.If you are new to shell programming, the book provides an excellent introduction, covering everything from the most basic to the most advanced features. And if you've been writing shell scripts for years, it offers a great way to find out what the new shell offers. Learning the bash Shell is also full of practical examples of shell commands and programs that will make everyday use of Linux that much easier. With this book, programmers will learn: How to install bash as your login shell The basics of interactive shell use, including UNIX file and directory structures, standard I/O, and background jobs Command line editing, history substitution, and key bindings How to customize your shell environment without programming The nuts and bolts of basic shell programming, flow control structures, command-line options and typed variables Process handling, from job control to processes, coroutines and subshells Debugging techniques, such as trace and verbose modes Techniques for implementing system-wide shell customization and features related to system security

UNIX expert Randal K. Michael guides you through every detail of writing shell scripts to automate specific tasks. Each chapter begins with a typical, everyday UNIX challenge, then shows you how to take basic syntax and turn it into a shell scripting solution. Covering Bash, Bourne, and Korn shell scripting, this updated edition provides complete shell scripts plus detailed descriptions of each part. UNIX programmers and system administrators can tailor these to build tools that monitor for specific system events and situations, building solid UNIX shell scripting skills to solve real-world system administration problems.

Shell Programming in Unix, Linux and OS X is a thoroughly updated revision of Kochan and Wood’s classic Unix Shell Programming tutorial. Following the methodology of the original text, the book focuses on the POSIX standard shell, and teaches you how to develop programs in this useful programming environment, taking full advantage of the underlying power of Unix and Unix-like operating systems. After a quick review of Unix utilities, the book’s authors take you step-by-step through the process of building shell scripts, debugging them, and understanding how they work within the shell’s environment. All major features of the shell are covered, and the large number of practical examples make it easy for you to build shell scripts for your particular applications. The book also describes the major features of the Korn and Bash shells. Learn how to... Take advantage of the many utilities provided in the Unix system Write powerful shell scripts Use the shell’s built-in decision-making and looping constructs Use the shell’s powerful quoting mechanisms Make the most of the shell’s built-in history and command editing capabilities Use regular expressions with Unix commands Take advantage of the special features of the Korn and Bash shells Identify the major differences between versions of the shell language Customize the way your Unix system responds to you Set up your shell environment Make use of functions Debug scripts Contents at a Glance 1 A Quick Review of the Basics 2 What Is the Shell? 3 Tools of the Trade 4 And Away We Go 5 Can I Quote You on That? 6 Passing Arguments 7 Decisions, Decisions 8 ‘Round and ‘Round She Goes 9 Reading and Printing Data 10 Your Environment 11 More on Parameters 12 Loose Ends 13 Rolo Revisited 14 Interactive and Nonstandard Shell Features A Shell Summary B For More Information