Du multiple selected directory

Shell Programming and Scripting
1

Hi,

is there any work around to total my selected multiple directory? ie.

directory structure:
mydir
     -dir1
           ---folder1
           ---folder2
     -dir2
           ---folder5
           ---folder6

total only 4 directory
          -folder1
          -folder2
          -folder6

thanks

2 
du -c folder1 folder2 folder6

Depending on your OS, check the option available

man du