Which of the following is the correct command to read a file named example.txt line by line in Linux shell?

easy📝 Syntax Q3 of 15

Linux CLI - Viewing and Editing Files

Which of the following is the correct command to read a file named example.txt line by line in Linux shell?

Acat example.txt | while read line; echo $line done

Bwhile read line; do echo $line; done < example.txt

Cread line < example.txt; echo $line

Dfor line in example.txt; do echo $line; done

Step-by-Step Solution

Solution:

Step 1: Understand shell syntax for reading lines
The correct syntax uses a while loop with input redirection to read each line.
Step 2: Verify command correctness
while read line; do echo $line; done < example.txt correctly reads each line and echoes it; others have syntax errors or misuse commands.
Final Answer:
while read line; do echo $line; done < example.txt -> Option B
Quick Check:
Correct shell loop syntax = while read line; do echo $line; done < example.txt [OK]

Quick Trick: Use while read loop with input redirection to read lines [OK]

Common Mistakes:

MISTAKES

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