On Linux using GNU du to calculate the size of directory recursively in bytes I can run:
du -sb /etc
What is equivalent syntax for BSD du based on the fact that -b parameter is not available?
find $HOME | xargs stat -f%z | awk ‘{ s+=$1 } END { print s }‘
...crawls thru $HOME, gets file sizes in bytes from stat and sums them up using awk.