Infinite loops in Bash Scripting - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create an infinite loop using while.

Bash Scripting

while [1]; do
  echo "Looping forever"
done

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

A0

Btrue

C1

Dfalse

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'false' which stops the loop immediately.

Using '0' or '1' which are not valid conditions in bash.

The true command always returns success, so the while loop never ends.

2fill in blank

medium

Complete the code to create an infinite loop using for.

Bash Scripting

for (( [1] )); do
  echo "Looping forever"
done

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

A;; ;;

B;;;

C;;

D;; ;; ;;

Attempts:

3 left

💡 Hint

Common Mistakes

Adding extra semicolons causes syntax errors.

Trying to put a condition that eventually ends the loop.

In bash, for ((;;)) creates an infinite loop by omitting all three expressions.

3fill in blank

hard

Fix the error in the infinite loop condition.

Bash Scripting

while [ [1] ]; do
  echo "Looping forever"
done

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

A1 -eq 1

B1 = 1

Ctrue

D1 == 1

Attempts:

3 left

💡 Hint

Common Mistakes

Using '=' or '==' inside [ ] for numbers causes errors.

Using 'true' inside [ ] is invalid syntax.

In bash test brackets, use -eq for numeric equality, so [ 1 -eq 1 ] is correct.

4fill in blank

hard

Fill both blanks to create an infinite loop with a condition that always succeeds.

Bash Scripting

while [1] [2]; do
  echo "Still looping"
done

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

Atrue

Bfalse

C&&

D||

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'false' which stops the loop.

Using logical OR which may not keep the condition true.

Using true && keeps the condition always true, so the loop never ends.

5fill in blank

hard

Complete the code to create an infinite loop using a for loop with arithmetic syntax.

Bash Scripting

for (( ; [1];  )); do
  echo "Loop forever"
done

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

Btrue

Attempts:

3 left

💡 Hint

Common Mistakes

Putting values in init or increment that stop the loop.

Using false or invalid conditions.

In bash, for (( ; true; )) creates an infinite loop by leaving init and increment empty and condition true.