Bash Scripting - String Operations
Which of the following expressions removes the shortest suffix '.bak' from the variable
file in Bash?Which of the following expressions removes the shortest suffix '.bak' from the variable file in Bash?
easy🧠 Conceptual Q2 of 15
Step-by-Step Solution
Solution:
Step 1: Identify suffix removal syntax
The % operator removes the shortest suffix matching the pattern; %% removes the longest suffix.Step 2: Match the pattern '.bak'
To remove '.bak' exactly as suffix, use${file%.bak}.Final Answer:
${file%.bak} -> Option BQuick Check:
Shortest suffix '.bak' removal = ${file%.bak} [OK]
Quick Trick: Use single % to remove shortest suffix pattern [OK]
Common Mistakes:
MISTAKES- Using %% which removes longest suffix
- Using # which removes prefix instead of suffix
- Omitting the dot in pattern causing wrong removal
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