Double quotes (variable expansion) in Bash Scripting - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to print the value of the variable name using double quotes.

Bash Scripting

name="Alice"
echo [1]

Drag options to blanks, or click blank then click option'

A'$name'

B"$name"

C$name

D"name"

Attempts:

3 left

💡 Hint

Common Mistakes

Using single quotes prevents the variable from expanding.

Not using quotes can cause issues if the variable contains spaces.

Using double quotes around "$name" allows the shell to expand the variable and print its value.

2fill in blank

medium

Complete the code to assign the variable greeting a string that includes the variable name expanded inside double quotes.

Bash Scripting

name="Bob"
greeting=[1]

Drag options to blanks, or click blank then click option'

A"Hello, $name!"

B'Hello, $name!'

CHello, $name!

D"Hello, name!"

Attempts:

3 left

💡 Hint

Common Mistakes

Using single quotes causes the variable name to be printed literally.

Not using quotes can cause syntax errors if the string has spaces.

Double quotes around "Hello, $name!" allow the variable name to expand inside the string.

3fill in blank

hard

Fix the error in the code to correctly print the variable path with spaces using double quotes.

Bash Scripting

path="/home/user/My Documents"
echo [1]

Drag options to blanks, or click blank then click option'

Apath

B'$path'

C$path

D"$path"

Attempts:

3 left

💡 Hint

Common Mistakes

Not quoting the variable causes the path to split into multiple words.

Using single quotes prevents variable expansion.

Using double quotes around "$path" preserves spaces and expands the variable correctly.

4fill in blank

hard

Fill both blanks to create a command that prints the variable file with variable expansion and preserves spaces.

Bash Scripting

file="My File.txt"
echo [1][2]

Drag options to blanks, or click blank then click option'

A"

B'

C$file

Dfile

Attempts:

3 left

💡 Hint

Common Mistakes

Using single quotes prevents variable expansion.

Not quoting the variable causes word splitting.

Double quotes ("{{BLANK_1}}") around the variable ($file) allow expansion and preserve spaces.

5fill in blank

hard

Fill all three blanks to assign message a string that includes the variable user expanded inside double quotes and an exclamation mark.

Bash Scripting

user="Eve"
message=[1]Hello, [2][3]

Drag options to blanks, or click blank then click option'

A"

B$user

C!"

D'

Attempts:

3 left

💡 Hint

Common Mistakes

Using single quotes prevents variable expansion.

Forgetting to close the double quotes causes errors.

Start with a double quote ("), then the variable ($user), and end with an exclamation mark and closing double quote (!").