Cat makefile | (echo yes && rev)                       leaks
echo yes && echo yes && cat dhdgdgjsk || echo a                leaks
echo abc && echo def | cat | rev && echo yes
(), ((())), (())
export leaks AAAAAAAAAAAAAAAAAAAAAA



To test:
Open file descriptor with cat << eof | ls open fd and infinte loop

test signals
test and verify all malocs
verify forbidden functions
check for any hidden or useless files