[Solved] In bash scripting, what does ${var:3:2} extract from the variable var? - Ans: Two characters starting from the 4th character | Bash Scripting

Bash Scripting - String Operations

In bash scripting, what does ${var:3:2} extract from the variable var?

AThree characters starting from the 2nd character

BTwo characters starting from the 4th character

CThe entire string from the 3rd character onward

DThe first two characters of the string

Step-by-Step Solution

Solution:

Step 1: Understand substring syntax
The syntax ${var:offset:length} extracts length characters starting at offset (0-based).
Step 2: Apply to given expression
${var:3:2} extracts 2 characters starting from index 3 (the 4th character).
Final Answer:
Two characters starting from the 4th character -> Option B
Quick Check:
Substring extraction = Two characters from 4th char [OK]

Quick Trick: Offset counts from zero; length is how many chars to take [OK]

Common Mistakes:

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In bash scripting, what does ${var:3:2} extract from the variable var?