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