[Solved] Given a file data.txt with these lines:apple banana applepie pineapple banana splitWhat is the output of grep -E '^apple$|banana | Leyaa.ai data.txt? | Linux CLI

Linux CLI - Text Processing

Given a file data.txt with these lines:

apple
banana
applepie
pineapple
banana split

What is the output of grep -E '^apple$|banana$' data.txt?

Aapplepie banana

Bapple banana split

Capple banana

Dapple banana banana split

Step-by-Step Solution

Solution:

Step 1: Analyze the regex pattern
The pattern ^apple$|banana$ means lines exactly matching "apple" OR lines ending with "banana".
Step 2: Match lines in the file
"apple" matches ^apple$. "banana" matches banana$. "applepie" does not match ^apple$ due to extra characters after "apple". "pineapple" matches neither. "banana split" does not end with "banana".
Final Answer:
apple banana -> Option C
Quick Check:
^apple$ or banana$ matches apple and banana [OK]

Quick Trick: Remember ^ means start, $ means end in regex [OK]

Common Mistakes:

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