Unsetting variables (unset) in Bash Scripting - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to unset the variable named my_var.

Bash Scripting

unset [1]

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

Amy_var

Bunset

Cvar

Dvariable

Attempts:

3 left

💡 Hint

Common Mistakes

Using the word 'unset' as the variable name.

Using a wrong variable name like 'var' or 'variable'.

The unset command removes the variable named my_var from the environment.

2fill in blank

medium

Complete the code to unset the variable temp in a script.

Bash Scripting

unset [1]

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

Atemps

Btemporary

Ctmp

Dtemp

Attempts:

3 left

💡 Hint

Common Mistakes

Trying to unset a variable with a similar but incorrect name.

Using a plural or extended form of the variable name.

The unset command removes the variable named exactly temp.

3fill in blank

hard

Fix the error in the code to properly unset the variable data.

Bash Scripting

unset [1]

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

A*data

B$data

Cdata

D&data

Attempts:

3 left

💡 Hint

Common Mistakes

Using $ before the variable name in unset.

Using special characters like * or & before the variable name.

When unsetting a variable, do not use the dollar sign. Just write the variable name.

4fill in blank

hard

Fill both blanks to unset the variable count and then print its value.

Bash Scripting

unset [1]
echo $[2]

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

Acount

Cvalue

Dvar

Attempts:

3 left

💡 Hint

Common Mistakes

Using different variable names in unset and echo.

Trying to unset with a wrong variable name.

First, unset the variable named count. Then, echo its value using $count.

5fill in blank

hard

Fill all three blanks to unset variables a and b, then print a.

Bash Scripting

unset [1] [2]
echo $[3]

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

Aa

Bb

Dc

Attempts:

3 left

💡 Hint

Common Mistakes

Unsetting only one variable instead of two.

Echoing a variable not unset or not declared.

You can unset multiple variables by listing them. Then echo the variable a.