In this brief article, I present 10 essential Linux questions along with their answers.
This foundational knowledge is crucial for anyone seeking to master Linux.

Q1: How do you find a pattern in a compressed log file?
zgrep "pattern" file.gz

Q2: How do you ignore certain file types while searching?
Use --exclude or --include:
grep --exclude="*.log" "word" *

Q3: How do you use grep to search for lines that start with a specific word?
grep "^word" filename

Q4: How do you find lines that end with a specific word?
grep "word$" filename

Q5: How do you highlight matching patterns in color?
grep --color=auto "word" filename

Q6: How do you use grep with find to search inside specific files?
find . -type f -name "*.txt" -exec grep "pattern" {} \;

Q7: How do you use grep to search for a pattern but only show the first match?
grep -m 1 "pattern" filename

Q8: How do you use grep with tail -f to monitor logs in real-time?
tail -f logfile | grep "pattern"

Q9: How do you filter lines that contain both error and critical?
grep "error" filename | grep "critical"

Q10: How do you search for special characters like . or * using grep?
Escape the special character:
grep "." filename

Stay tuned for part 5 coming tomorrow!

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