[Solved] What will be the output of this command?grep 'pattern' /nonexistentfile > /dev/null 2>&1 && echo 'Found' || echo 'Not Found' | Linux CLI

Linux CLI - Pipes and Redirection

What will be the output of this command?

grep 'pattern' /nonexistentfile > /dev/null 2>&1 && echo 'Found' || echo 'Not Found'

ANot Found

BFound

CNo output

DError message displayed

Step-by-Step Solution

Solution:

Step 1: Analyze command behavior
The file does not exist, so grep will fail and return a non-zero exit status.
Step 2: Output redirection
Both standard output and error are redirected to /dev/null, so no messages appear.
Step 3: Conditional execution
The && runs echo 'Found' only if grep succeeds; otherwise, || runs echo 'Not Found'.
Final Answer:
Not Found -> Option A
Quick Check:
Non-zero exit triggers 'Not Found' [OK]

Quick Trick: Non-zero exit triggers 'Not Found' echo [OK]

Common Mistakes:

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