[CentOS] recursively count the words occurrence in the text files

I just can't google for it:

I'm searching for a "bash" "one liner" (awk, perl, or anything) for this:

there are text files, in several directories:

mkdir one mkdir two mkdir three

echo "word1 word2 word3" > one/asf.txt echo "word2 word4, word5" > one/asfcxv saf.txt echo "word1. word2" > one/dsgsdg.txt

echo "word6, word3!" > two/sdgsd dsf.txt echo "word6" > two/ergd.txt

echo "asdf, word2" > three/werdf.txt echo "word7, word8 word9 word10" > three/qwerb erfsdgdsg.txt echo "word4 word3" > three/web erg as.txt

so it does the magic* "recursively":

$ SOMEMAGIC > output.txt cat output.txt asdf 1 word1 2 word2 4 word3 3 word4 2 word5 1 word6 2 word7 1 word8 1 word9 1 word10 1 $

*recursively count the words occurrence in the text files like: "word1 2" can anyone point to a howto/link? [re: i just can't google for it :]