Bird
0
0

What will be the output of this script?

medium📝 Command Output Q5 of 15
Bash Scripting - Variables
What will be the output of this script? 
declare -i x=10
declare -i y=5
x=$((x - y))
echo $x
A5
B105
Cx - y
DError
Step-by-Step Solution
Solution:

  1. Step 1: Evaluate arithmetic expression

    The expression x=$((x - y)) subtracts 5 from 10, resulting in 5.

  2. Step 2: Output the value of x

    Echo prints 5 as the result of the subtraction.

  3. Final Answer:

    5 -> Option A

  4. Quick Check:

    Arithmetic with $(( )) evaluates correctly [OK]
Quick Trick: Use $(( )) to perform arithmetic operations [OK]
Common Mistakes:
MISTAKES
  • Not using $(( )) for arithmetic
  • Concatenating strings instead of subtracting
  • Expecting variable names as output

Want More Practice?

15+ quiz questions · All difficulty levels · Free

Free Signup - Practice All Questions
More Bash Scripting Quizzes
Bash Scripting Basics - Bash vs other shells (Zsh, Fish, sh) - Quiz 10hard Bash Scripting Basics - First Bash script - Quiz 14medium Conditionals - [[ ]] extended test - Quiz 5medium Conditionals - if-then-else - Quiz 15hard Loops - until loop - Quiz 11easy Loops - Looping over files and directories - Quiz 7medium Loops - until loop - Quiz 3easy Loops - for loop with range ({1..10}) - Quiz 7medium User Input - read command - Quiz 12easy Variables - Variable assignment (no spaces around =) - Quiz 9hard