Simple examples of grep (egrep, fgrep)

#!/bin/bash

echo -n 'Enter word: '

read word

#in all params of script calling

for i in $@                            
do

        #looking for word at the beginning of string

egrep ^$word $i  
        #looking for word at the end of string
        egrep $word$ $i
        #looking for strings without words windows, dos OR gates

        egrep -v "(windows|dos|gates)"         

done