Why conditionals branch script logic in Bash Scripting - Challenge Your Understanding

Challenge - 5 Problems

💻 Command Output

intermediate

What is the output of this Bash script with conditionals?

Consider the following Bash script. What will it print when run?

Bash Scripting

count=5
if [ $count -gt 3 ]; then
  echo "Count is greater than 3"
else
  echo "Count is 3 or less"
fi

A Syntax error

B Count is 3 or less

C Count is greater than 3

D No output

💡 Hint

Check the condition if count is greater than 3.

The variable count is 5, which is greater than 3, so the if condition is true and the first echo runs.

💻 Command Output

intermediate

What output does this nested conditional produce?

What will this Bash script print?

Bash Scripting

value=10
if [ $value -lt 5 ]; then
  echo "Less than 5"
elif [ $value -eq 10 ]; then
  echo "Equal to 10"
else
  echo "Other value"
fi

A Equal to 10

B Less than 5

C Other value

D Syntax error

💡 Hint

Check the elif condition carefully.

The value is 10, so the first if is false, but the elif condition is true, so it prints 'Equal to 10'.

🔧 Debug

advanced

Why does this Bash script fail to run?

This script is intended to print "Positive" if the number is greater than zero, but it fails. What is the error?

Bash Scripting

num=3
if [ $num -gt 0 ]; then
  echo "Positive"
fi

A No output because condition is false

B Runs correctly and prints "Positive"

C Runtime error: variable not defined

D Syntax error due to incorrect comparison operator

💡 Hint

Check the operator used inside the square brackets.

In Bash, '>' is a redirection operator, not a numeric comparison. The correct operator is '-gt'.

💻 Command Output

advanced

What does this script print with multiple conditions?

What is the output of this Bash script?

Bash Scripting

score=75
if [ $score -ge 90 ]; then
  echo "Grade A"
elif [ $score -ge 80 ]; then
  echo "Grade B"
elif [ $score -ge 70 ]; then
  echo "Grade C"
else
  echo "Grade F"
fi

A Grade C

B Grade A

C Grade B

D Grade F

💡 Hint

Check which condition matches the score first.

Score 75 is not >= 90 or 80, but it is >= 70, so it prints 'Grade C'.

💻 Command Output

expert

What is the output of this Bash script using logical AND in condition?

What will this script print?

Bash Scripting

a=5
b=10
if [ $a -lt 10 ] && [ $b -gt 5 ]; then
  echo "Both conditions true"
else
  echo "One or both conditions false"
fi

A One or both conditions false

B Both conditions true

C Syntax error due to missing semicolon

D No output

💡 Hint

Both conditions must be true for the if to run.

a=5 is less than 10 and b=10 is greater than 5, so both conditions are true and it prints 'Both conditions true'.