Why loops repeat tasks efficiently in Bash Scripting - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to print numbers from 1 to 5 using a loop.

Bash Scripting

for i in [1]; do echo $i; done

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

A1 2 3 4 5

Bone two three four five

Ci in 1..5

Dseq 1 10

Attempts:

3 left

💡 Hint

Common Mistakes

Using words instead of numbers in the list.

Trying to use a range syntax not supported in bash like '1..5'.

The loop needs a list of numbers to iterate over. "1 2 3 4 5" correctly provides numbers 1 to 5.

2fill in blank

medium

Complete the code to print "Hello" 3 times using a loop.

Bash Scripting

for i in [1]; do echo Hello; done

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

AHello Hello Hello

B1 2 3

Cseq 5

D3

Attempts:

3 left

💡 Hint

Common Mistakes

Using a single number without spaces, which is not a list.

Using the word 'Hello' instead of numbers.

The loop needs a list of numbers to repeat the task 3 times. "1 2 3" provides exactly three iterations.

3fill in blank

hard

Fix the error in the loop to print numbers 1 to 4.

Bash Scripting

for i in [1]; do echo $i; done

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

A1..4

Bseq 1 5

C1 2 3 4

Drange(1,4)

Attempts:

3 left

💡 Hint

Common Mistakes

Using Python or other language syntax like 'range(1,4)'.

Using '1..4' which is not valid in bash.

Bash does not support the '1..4' or 'range()' syntax. "1 2 3 4" is the correct list for the loop.

4fill in blank

hard

Fill both blanks to create a loop that prints even numbers from 2 to 10.

Bash Scripting

for num in [1]; do if [[ $num [2] 2 -eq 0 ]]; then echo $num; fi; done

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

A2 4 6 8 10

B-lt

C%

D-gt

Attempts:

3 left

💡 Hint

Common Mistakes

Using a range with odd numbers included.

Using comparison operators like '-lt' instead of modulus.

The loop iterates over even numbers 2 to 10. The condition uses modulus '%' to check if the number is divisible by 2.

5fill in blank

hard

Fill all three blanks to create a loop that prints numbers from 1 to 5 squared.

Bash Scripting

for [1] in [2]; do echo $(( [1] [3] [1] )); done

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

Ai

B1 2 3 4 5

C*

D+

Attempts:

3 left

💡 Hint

Common Mistakes

Using '+' instead of '*' which adds instead of squares.

Using a list that does not contain numbers 1 to 5.

The variable 'i' iterates over numbers 1 to 5. The expression multiplies 'i' by itself to get the square.