One of the things I like about #git_annex is accessing its data via git and usual shell tools, so without learning any specific git annex commands I can check e.g. if all my ebooks would fit an ereader device: (echo print\(;git diff `git hash-object -t tree /dev/null`|sed -rn 's,^.*\.git/annex/objects/.*s([0-9]+)--[^-]+\.epub$,\1 +,p';echo 0\))|python3