Bash Scripting - Loops
What is the output of this script?
for i in {3..6}; do echo $((i * 2)); doneWhat is the output of this script?
medium📝 Command Output Q13 of 15
Step-by-Step Solution
Solution:
Step 1: Identify loop values
The loop variable i takes values 3, 4, 5, 6 from {3..6}.Step 2: Calculate output for each iteration
Each iteration prints i * 2: 3*2=6, 4*2=8, 5*2=10, 6*2=12.Final Answer:
6 8 10 12 -> Option CQuick Check:
Multiply each i by 2 [OK]
Quick Trick: Multiply loop variable inside $(( )) for arithmetic [OK]
Common Mistakes:
MISTAKES- Confusing loop values with output
- Using single parentheses instead of $(( ))
- Expecting space-separated output on one line
Master "Loops" in Bash Scripting
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