I use rsnapshot for backups, which generates a series of folders containing files of the same name. Some of the files are hard linked, while others are separate. For instance,
hourly.2/file1 might be hard linked to the same file, while
hourly.2/file2 are entirely separate files.
I want to find the amount of space used by the folder
hourly.2 ignoring any files which are hard links to files in
hourly.1. So in the above example, I would want to get the size of file2, but ignore file1.
I'm using bash on linux, and I want to do this from the command line as simply as possible, so no big graphical or other-OS-only solutions please.