For instance, I have a large filesystem that is filling up faster than I expected. So I look for what\'s being added:
find /rapidly_shrinking_drive/ -type f
Darn, Stephan202 is right. I didn't think about du -s (summarize), so instead I used awk:
find rapidly_shrinking_drive/ -name "offender1" -mtime -1 | du | awk '{total+=$1} END{print total}'
I like the other answer better though, and it's almost certainly more efficient.