NDG LINUX CHAPTER 9

NDG Linux Essentials - CISCO Networking Academy - Questions and Answers 

CORRECT - See section 9.4

Which are appropriate editors for writing shell scripts?

• nano
• vi

CORRECT - See section 9.4

Most of nanos commands take the form of:

• Control and another character

CORRECT - See section 9.5.2

What does this shell script do?

FOO=/tmp/foo
if [ ! d $FOO ]; then
    mkdir $FOO
fi

• Creates /tmp/foo if it does not exist

CORRECT - See section 9.5.1

Given the following part of a script:

if [ -f $1 ]; then
    echo I am here
fi

What is the meaning of $1?

• It is the first argument passed to the script

CORRECT - See section 9.5.1

What is the correct way to save the current directory to a variable?

• A=`pwd`

CORRECT - See section 9.5.1

Which shell command accepts input from the users keyboard?

• read

CORRECT - See section 9.5.1

What information is held inside $? ?

• The previous commands exit code

CORRECT - See section 9.5.1

How would you finish your script with an exit code of 42?

• exit 42

CORRECT - See section 9.5.2

The if command looks for what exit code to consider a condition to be true?

• 0

CORRECT - See section 9.5.2

A conditional that lets you make multiple comparisons with a pattern is called:

• case