Solution:Step 1: Understand 2>&1 redirectionRedirects stderr to stdout so both go through the pipe.Step 2: Understand tee commandTee writes input it receives to output.log and stdout.Final Answer:The error message from ls about /nonexistent directory -> Option AQuick Check:2>&1 merges errors to stdo

[Solved] Given the command:ls /nonexistent 2>&1 | tee output.logWhat will be the content of output.log? - Ans: The error message from ls about /nonexistent directory | Bash Scripting

Bash Scripting - Error Handling

Given the command:

ls /nonexistent 2>&1 | tee output.log

What will be the content of output.log?

AThe error message from ls about /nonexistent directory

BAn empty file because errors are not captured

CThe list of files in the current directory

DOnly standard output without errors

Step-by-Step Solution

Solution:

Step 1: Understand 2>&1 redirection
Redirects stderr to stdout so both go through the pipe.
Step 2: Understand tee command
Tee writes input it receives to output.log and stdout.
Final Answer:
The error message from ls about /nonexistent directory -> Option A
Quick Check:
2>&1 merges errors to stdout for piping [OK]

Quick Trick: Use 2>&1 to pipe errors through commands like tee [OK]

Common Mistakes:

MISTAKES

Assuming errors are not piped
Expecting directory listing despite error
Confusing tee behavior with redirection

Master "Error Handling" in Bash Scripting

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More Bash Scripting Quizzes

Given the command:

Step 1: Understand 2>&1 redirection

Step 2: Understand tee command

Final Answer:

Quick Check:

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