Bash Scripting - String Operations
Given
var="abc123abc456", what does echo ${var#abc} output?Given var="abc123abc456", what does echo ${var#abc} output?
easy🧠 Conceptual Q2 of 15
Step-by-Step Solution
Solution:
Step 1: Identify the shortest prefix matching 'abc'
The variable starts with 'abc', so the shortest prefix 'abc' is removed.Step 2: Remove the prefix and output the rest
Removing 'abc' leaves '123abc456'.Final Answer:
123abc456 -> Option BQuick Check:
Prefix 'abc' removed once = 123abc456 [OK]
Quick Trick: Removes only the first matching prefix, not all occurrences [OK]
Common Mistakes:
MISTAKES- Removing all 'abc' occurrences instead of just prefix
- Confusing prefix removal with suffix removal
- Expecting output unchanged if prefix matches
Master "String Operations" in Bash Scripting
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