Assuming you want an answer rather than a theory, something like
Code:
for f in *; do
grep use "$f" >/dev/null && continue
grep take "$f" >/dev/null && continue
# file contains neither if we get to here; report its file name
echo "$f"
done
If you really do require this to be done in regular expressions exclusively, there is no simple way to specify this in regular expressions. Theoretically there could be an operator & to parallel the operator | but in practice, it is fairly useless, and also complicates the regex engine a fair bit (if I recall the gist of the research papers on this topic correctly).
