Bash Scripting - String Operations
Which of the following is the correct syntax to extract 5 characters starting at position 2 from variable
var in bash?Which of the following is the correct syntax to extract 5 characters starting at position 2 from variable var in bash?
easy📝 Syntax Q3 of 15
Step-by-Step Solution
Solution:
Step 1: Recall substring syntax
The correct syntax is${var:offset:length}where offset and length are numbers.Step 2: Match syntax to options
${var:2:5} uses${var:2:5}which means start at index 2 and take 5 characters, matching the requirement.Final Answer:
${var:2:5} -> Option AQuick Check:
Correct substring syntax = ${var:2:5} [OK]
Quick Trick: Use colon-separated offset and length inside braces [OK]
Common Mistakes:
MISTAKES- Using parentheses instead of braces
- Swapping offset and length
- Using minus sign instead of colon
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