[Solved] What does the command ls nonexistingfile 2> error.log do in Linux? — Ans: Sends the error message to the file error.log, replacing its content. | Linux CLI

Linux CLI - Pipes and Redirection

What does the command ls nonexistingfile 2> error.log do in Linux?

ASends the error message to the file error.log, replacing its content.

BAppends the error message to the file error.log.

CSends the normal output to error.log.

DDisplays the error message on the screen only.

Step-by-Step Solution

Solution:

Step 1: Understand 2> redirection
The operator 2> redirects standard error (stderr) to a file, replacing its content.
Step 2: Analyze the command behavior
The command tries to list a non-existing file, so it produces an error message sent to error.log, overwriting previous content.
Final Answer:
Sends the error message to the file error.log, replacing its content. -> Option A
Quick Check:
2> replaces error file content [OK]

Quick Trick: 2> overwrites error file, 2>> appends error [OK]

Common Mistakes:

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What does the command ls nonexistingfile 2> error.log do in Linux?