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Introduction to Linux - A Hands on Guide
This guide was created as an overview of the Linux Operating System, geared toward new users as an exploration tour and getting started guide, with exercises at the end of each chapter.
For more advanced trainees it can be a desktop reference, and a collection of the base knowledge needed to proceed with system and network administration. This book contains many real life examples derived from the author's experience as a Linux system and network administrator, trainer and consultant. They hope these examples will help you to get a better understanding of the Linux system and that you feel encouraged to try out things on your own.
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I need your help. I don't even understand the first two questions and have looked for a hour for the last two. The last one i even tried doing it and nothing happend. These are questions off the study guide for the final so its not going to be graded, i just need to know the answers.
20. Your script has just executed the grep command and returned an error message. What would the output of the following commands in the same script be?
if [ *$?* = 0]
C. No Output
D. An error message
48. Which command displays the value of the variable FILE?
A. echo ~FILE
B. echo FILE
C. echo $FILE
D. echo #FILE
54. Which quoting mechanism displays all characters literally and allows for variable expansion?
A. "" (double quotes)
B. '' (single quotes)
C. ``(back quotes)
D. \ (backslash)
56. You intended to type the command rm 'test' but accidentally inserted a space and tyed rm ' test'. What is the result?
A. All files in your current directory containing 'test' will be deleted
B. All files in your current directory will be deleted and all files startring with 'test' in subdirectories will be deleted
C. All files in your current directory containing will be deleted and all files in the subdirectory test will be deleted
D. All files in your current directory will be deleted