I\'m using git to manage a non-coding-project folder that has some large files scattered all over the place.
I\'m not interesting in moving the files around as they
There are no flags to git that will do what you want. However, there are a lot of other utilities available that would work just fine...such as the find command. To add all files smaller than 4 MB:
find * -size -4M -type f -print | xargs git add
This assumes that you have no filenames containing spaces (e.g., "my important file"). If you have such files, then:
find * -size -4M -type f -print0 | xargs -0 git add
UPDATE: Note that I've replaced . with * here, because otherwise it will find (and try to add) things in your .git directory, which is not helpful.
Building off of larsks's answer, you could do the opposite to add the large files to your .gitignore
echo "# Files over 4mb" >> .gitignore
find * -size +4M -type f -print >> .gitignore