cp seems to miss out some files

[SI23]

I'm trying to copy the contents of a directory and all it's sub folders into another directory (same sub folder structure).

However if I du -h the original folder the size is 212Mb after copying (with recursive option, -r) performing a du -h on the new folder gives 191Mb.

My question is why are the sizes of the two folders different? Does it mean some of the files haven't copied over? I can't see any missing.

Thanks.

[Freston]

Perhaps some hidden files are left? cp oldpath/* newpath does not copy hidden files.

Try this:

 ls -aR oldpath newpath | sort | uniq -u