[Solved] Identify the error in this command:echo "abc" | tr 'a-z' 'A-Z' '0-9' — Ans: Extra argument '0-9' causes syntax error | Linux CLI

Linux CLI - Text Processing

Identify the error in this command:
echo "abc" | tr 'a-z' 'A-Z' '0-9'

ANo error, command works fine

BExtra argument '0-9' causes syntax error

CTarget set is missing

DSource set is invalid

Step-by-Step Solution

Solution:

Step 1: Check the number of arguments to tr
tr expects exactly two sets: source and target. Here, three arguments are given.
Step 2: Identify the cause of error
The extra '0-9' argument is invalid and causes a syntax error.
Final Answer:
Extra argument '0-9' causes syntax error -> Option B
Quick Check:
Extra argument error = Extra argument '0-9' causes syntax error [OK]

Quick Trick: tr needs exactly two sets, no extras [OK]

Common Mistakes:

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