Get exact size of directory or bundle

Question

How can I get exact size of directory or app bundle? The `du` command shows disk usage (as per command name), is there a command to get exact file size in bytes (stripping the overhead bytes of blocks)?

Answer 1

Try the following, which takes into account resource forks:
STARTING_DIR="$HOME/Movies"
find "$STARTING_DIR" -type f |\
    perl -ne '
        chomp $_;
        @st=stat($_);
        $sum+=$st[7];
        @st=stat("$_/rsrc");
        $sum+=$st[7];
        END{print "$sum\n";}
My quick testing seems to indicate that directories and subdirectories are not being counted, but file resource forks are.
My tests did not try Aliases, Symlinks, CHR, BLK, or FIFO typed files, so it may or may not be accurate.