Book Image

Mastering Linux Shell Scripting - Second Edition

By : Mokhtar Ebrahim, Andrew Mallett
5 (1)
Book Image

Mastering Linux Shell Scripting - Second Edition

5 (1)
By: Mokhtar Ebrahim, Andrew Mallett

Overview of this book

In this book, you’ll discover everything you need to know to master shell scripting and make informed choices about the elements you employ. Grab your favorite editor and start writing your best Bash scripts step by step. Get to grips with the fundamentals of creating and running a script in normal mode, and in debug mode. Learn about various conditional statements' code snippets, and realize the power of repetition and loops in your shell script. You will also learn to write complex shell scripts. This book will also deep dive into file system administration, directories, and system administration like networking, process management, user authentications, and package installation and regular expressions. Towards the end of the book, you will learn how to use Python as a BASH Scripting alternative. By the end of this book, you will know shell scripts at the snap of your fingers and will be able to automate and communicate with your system with keyboard expressions.
Table of Contents (17 chapters)

Questions

  1. What is the result of the following code: True or False?
if [ "LikeGeeks" \> "likegeeks" ]  
then 
echo "True" 
else 
echo "False" 
fi 
  1. Which one of the following scripts is correct?
#!/bin/bash 
if ! [ "mokhtar" = "Mokhtar" ]  
then 
echo "Strings are not identical" 
else 
echo "Strings are identical" 
fi 

Or

#!/bin/bash 
if [ "mokhtar" != "Mokhtar" ]  
then 
echo "Strings are not identical" 
else 
echo "Strings are identical" 
fi
  1. How many commands can be used as an operator to return True in the following example?
#!/bin/bash 
if [ 20 ?? 15 ] 
then 
echo "True" 
else 
echo "False" 
fi 
  1. What is the result of the following code?
#!/bin/bash 
mydir=/home/mydir 
name="mokhtar" 
if [ -d $mydir ] || [ -n $name ]...