System Logging

Question 1

grep [options] ‘search criteria’ file.txt

Answer 1

-i = ignore cases
-v = invert search
-c = count match result
-o = only characters that match
-r = read files recursively
-E = Use extended regular expression this is same as egrep command

Question 2

find / -name *.txt | grep apache

Answer 2

what does this command do?