You want to find all lines containing 'error' in .log files recursively but exclude directories named 'backup' and 'temp'. Which command achieves this?

hard📝 Application Q8 of 15

Linux CLI - Searching and Finding

Agrep -r --include='*.log' --exclude-dir={backup,temp} 'error' .

Bgrep -r --include='*.log' --exclude-dir backup,temp 'error' .

Cgrep -r --include='*.log' --exclude backup,temp 'error' .

Dgrep -r --include='*.log' --exclude-dir='backup temp' 'error' .

Step-by-Step Solution

Solution:

Step 1: Use --include to filter .log files
The --include='*.log' limits search to .log files.
Step 2: Use --exclude-dir with brace expansion
To exclude multiple directories, use --exclude-dir={backup,temp}.
Step 3: Combine options correctly
Command grep -r --include='*.log' --exclude-dir={backup,temp} 'error' . does the job.
Final Answer:
grep -r --include='*.log' --exclude-dir={backup,temp} 'error' . -> Option A
Quick Check:
Multiple dir exclude uses braces = B [OK]

Quick Trick: Use braces {} to exclude multiple directories [OK]

Common Mistakes:

Separating directories with commas without braces
Using --exclude instead of --exclude-dir
Putting directory names in quotes as one string

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You want to find all lines containing 'error' in .log files recursively but exclude directories named 'backup' and 'temp'. Which command achieves this?

Step 1: Use --include to filter .log files

Step 2: Use --exclude-dir with brace expansion

Step 3: Combine options correctly

Final Answer:

Quick Check:

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