del *.o file

[Jack]

hi,

today, I checked the size of my home directory, hmmm, it's over 940M.
cause I don't have a good habit to make clean every time finishing a
make, there should be a lot space wasted.  there must a easy
way to remove all .o files(recursively) in one command line, just don't 
know how.

??? find -> exec rm

thanks,

jack, btw, do you know a good site to learn regular expression?