Shell Programming and Scripting

cat test1.txt
himynameisrajandiamfriendofrajeshfriend
wouldyouliketobemyfriend.
 
cat test2.txt
himynameisdostandiamfriendofdostfriend
wouldyouliketobemyfriend.

for i in `cat test[1-2].txt`; 
do
if [ "$i" = "friend" ]; then
cnt=`expr $cnt + 1`
fi
done
echo " total number of occurance of friend is: $cnt "

awk '{n+=gsub("friend",x)}END{print n}' test1.txt test.txt

grep -oi "friend" (filesname)  | wc -l