Style guide and conventions in Bash Scripting - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to add a comment in a Bash script.

Bash Scripting

#[1] This is a comment

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

A//

B#

C!

D--

Attempts:

3 left

💡 Hint

Common Mistakes

Using // or -- which are not valid comment symbols in Bash.

Forgetting to add the comment symbol at the start.

In Bash scripts, comments start with the # symbol.

2fill in blank

medium

Complete the code to declare a variable named 'name' with value 'Alice'.

Bash Scripting

[1]=Alice

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

Aname

Bdeclare name

Clet name

Dvar name

Attempts:

3 left

💡 Hint

Common Mistakes

Adding spaces around the equal sign.

Using keywords like var or let which are not used in Bash.

In Bash, variables are assigned without spaces and without keywords like var or let.

3fill in blank

hard

Fix the error in the code to print the variable 'name' value.

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 $ sign before the variable name.

Using quotes that prevent variable expansion.

To print a variable's value in Bash, prefix it with $.

4fill in blank

hard

Fill both blanks to write a for loop that prints numbers 1 to 3.

Bash Scripting

for [1] in [2]
do
  echo $[1]
done

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

Ai

B1 2 3

Cseq 1 3

Dnum

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'seq 1 3' without command substitution.

Using invalid variable names.

The loop variable is 'i' and the list is '1 2 3' to iterate over numbers 1 to 3.

5fill in blank

hard

Fill all three blanks to create an if statement that checks if variable 'count' is greater than 10.

Bash Scripting

if [ [1] [2] [3] ]
then
  echo "Count is large"
fi

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

A$count

B>

C10

D-gt

Attempts:

3 left

💡 Hint

Common Mistakes

Using > instead of -gt inside [ ] which causes errors.

Not using $ before the variable name.

In Bash, numeric comparison uses -gt inside [ ]. The variable is referenced with $.