my net house

WAHEGURU….!

Common Regular Expressions

Find line in multiple files:


grep -rnw '/home/ubuntu/workspace/tools-tpn-ops/' -e 'import os'

case insensitive: grep -i "Aditi" helloaditi

case ins and separate existance: grep -iw "is" helloaditi

match and show three lines after that: grep -A 3 -i "am" helloaditi

case of exclusion: grep -v -e "arsh" -e "honey" helloaditi

find position of word in file: grep -o -b "aditi" helloaditi

find line number of matching text: grep -n "sharma" helloaditi

read a specified line number: if you exactly know the line number then do

lets say you want to read line 84
head -84 a.txt| tail -1

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