[Solved] Find the mistake in this script line:grep -i "Error" logfile.txt | grep -v - Ans: Missing pattern after -v option | Bash Scripting

Bash Scripting - Text Processing in Scripts

Find the mistake in this script line:

grep -i "Error" logfile.txt | grep -v

AMissing pattern after -v option

BUsing -i and -v together is invalid

CQuotes around Error should be single quotes

Dlogfile.txt should be before grep options

Step-by-Step Solution

Solution:

Step 1: Understand -v option usage
The -v option requires a pattern to invert matches; here it is missing.
Step 2: Check the command pipeline
The second grep lacks a pattern after -v, causing an error.
Final Answer:
Missing pattern after -v option -> Option A
Quick Check:
-v needs a pattern to invert [OK]

Quick Trick: Always provide a pattern after -v in grep [OK]

Common Mistakes:

MISTAKES

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