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OS/bash/Week2/answers.md

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+## OS Lab - Week2
+
+Q2. 
+	- `grep -E '^..$' *` (finds all the files in the folder with exactly two characters)
+	- `grep '^[A-Z]' *`
+	- `grep '\.$' *`
+	- `grep ' ' *`
+	- `grep '[0-9]' filename > outputfile`
+
+Q3. 	- `grep -c "ICT" ITStudents.txt`
+	- `sed 's/:IT:/:Information Technology:/g' students.txt > ITStudents.txt`
+	- `sed awk -F: '$1 == "1234" { avg = ($6 + $7 + $8) / 3; print avg }' students.txt`
+	- `awk 'NR==1 { print toupper($0) } NR>1 { print }' students.txt`
+
+
+Q4.	- `grep "MIT" * | sed 's/MIT/Manipal Institute of Technology/g' | cut -d':' -f1,2`
+
+Q5.	- `find . -type f -name '*[0-9]*' -exec wc {} +`
+
+Q6. 	- `for i in {1..5}; do wc example.txt & done`
+	- `pkill wc`