Accessing variables ($var and ${var}) in Bash Scripting - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to print the value of the variable name.

Bash Scripting

echo [1]

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

A${name}

Bname

C$name

D&name

Attempts:

3 left

💡 Hint

Common Mistakes

Forgetting the dollar sign before the variable name.

Using the variable name without any prefix.

In bash, to access the value of a variable, you use the dollar sign followed by the variable name, like $name.

2fill in blank

medium

Complete the code to print the value of the variable path using braces.

Bash Scripting

echo [1]

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

A${path}

B$path

Cpath

D$[path]

Attempts:

3 left

💡 Hint

Common Mistakes

Using square brackets instead of braces.

Omitting the dollar sign.

Using braces like ${path} helps to clearly mark the variable name, especially when concatenating with other text.

3fill in blank

hard

Fix the error in the code to correctly print the variable file followed by the string .txt.

Bash Scripting

echo [1]

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

A${file}.txt

B${filetxt}

C$filetxt

D$file.txt

Attempts:

3 left

💡 Hint

Common Mistakes

Writing $file.txt which looks for variable file.txt.

Concatenating without braces causing wrong variable name.

To append text after a variable without confusion, use braces: ${file}.txt ensures only file is treated as the variable.

4fill in blank

hard

Fill both blanks to correctly print the variable user and then the string _data.

Bash Scripting

echo [1][2]

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

A${user}

B$user

C_data

Ddata

Attempts:

3 left

💡 Hint

Common Mistakes

Using $user_data which looks for variable user_data.

Forgetting to use braces to separate variable and text.

Using ${user} ensures the variable ends before the appended string _data.

5fill in blank

hard

Fill all three blanks to create a variable count with value 5, then print it with braces and add the string items.

Bash Scripting

[1]=5
echo [2][3]

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

Acount

B${count}

C items

D$count

Attempts:

3 left

💡 Hint

Common Mistakes

Using $count without braces when appending text.

Forgetting to assign the variable before printing.

First assign 5 to count. Then print it with braces ${count} to safely append the string items.