Bash Scripting - Arrays
How would you declare a Bash indexed array
numbers containing only even numbers from 2 to 10 using brace expansion?How would you declare a Bash indexed array numbers containing only even numbers from 2 to 10 using brace expansion?
hard🚀 Application Q9 of 15
Step-by-Step Solution
Solution:
Step 1: Understand brace expansion with step
Brace expansion {start..end..step} generates sequences with steps, e.g., {2..10..2} generates 2 4 6 8 10.Step 2: Use correct array declaration syntax
Wrap brace expansion in parentheses to declare array: numbers=({2..10..2}). Other options use invalid syntax or missing parentheses.Final Answer:
numbers=({2..10..2}) -> Option CQuick Check:
Brace expansion with step inside parentheses = array [OK]
Quick Trick: Use numbers=({start..end..step}) for stepped arrays [OK]
Common Mistakes:
MISTAKES- Using commas inside array declaration
- Using square or curly brackets instead of parentheses
- Not wrapping brace expansion in parentheses
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