Environment variables vs local variables in Bash Scripting - Interactive Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to set a local variable named name with the value John.

Bash Scripting

name=[1]

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

AJohn

B'John'

C"John"

Dname

Attempts:

3 left

💡 Hint

Common Mistakes

Using quotes unnecessarily when not needed

Trying to export the variable when only local is needed

In bash, to assign a string value without spaces or special characters, you can simply write name=John. Quotes are optional here.

2fill in blank

medium

Complete the code to export a variable PATH with the value /usr/bin so it becomes an environment variable.

Bash Scripting

export PATH=[1]

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

APATH

B/usr/bin

C"/usr/bin"

D'/usr/bin'

Attempts:

3 left

💡 Hint

Common Mistakes

Not using quotes causing errors if path contains spaces

Assigning without export so variable is local only

When exporting variables with paths or strings, it's good practice to use quotes to avoid issues with special characters or spaces.

3fill in blank

hard

Fix the error in the code to correctly print the value of the environment variable HOME.

Bash Scripting

echo [1]

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

A$HOME

BHOME

C${HOME}

Denv HOME

Attempts:

3 left

💡 Hint

Common Mistakes

Printing the variable name without $ so it prints the literal string

Using env HOME which is incorrect syntax

To print the value of an environment variable in bash, prefix it with $. So echo $HOME prints the home directory.

4fill in blank

hard

Fill both blanks to create a local variable var with value 5 and export it as an environment variable.

Bash Scripting

var=[1]
[2] var

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

A5

Bexport

Cset

Ddeclare

Attempts:

3 left

💡 Hint

Common Mistakes

Using set or declare instead of export

Putting quotes around the number 5

First assign the value 5 to var. Then use export var to make it an environment variable.

5fill in blank

hard

Fill all three blanks to create a local variable count with value 10, export it, and then print its value.

Bash Scripting

count=[1]
[2] count
[3] $count

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

A10

Bexport

Cecho

Dprint

Attempts:

3 left

💡 Hint

Common Mistakes

Using print instead of echo

Not exporting the variable before printing

Putting quotes around the number 10

Assign 10 to count, export it to make it an environment variable, then print its value using echo $count.