Red Hat

Hi,

Here is this weird thing happening here. I mounted RHEL 6.6 DVD on a directoy

Code:

/a

, I am trying to copy it's content to another folder by using command:

Code:

cp -pr /a/* /new/folder

But while I run

Code:

ls -lrt

on both locations it show me difference in number of files. Any specific reason for that. Also I ran diff on both location and it didn't give me anything. To add more I found difference in sizes of Packages folder also, where numbers of files are uniform.

Size of what? The size of a folder in ls is filesystem-specific, and not really meaningful. Directory entries on a CD/DVD are very different from on a Linux partition.

* may be skipping some files, it does not match any file beginning with . For that matter, ls does not list any file beginning with . either (unless you force it with -a).

Sometimes I use this trick:

Code:

tar -C /a/ -cf - . | tar -C /new/folder -xvf -

-C to tar means "change directory" so you can change its point of view before archiving or extracting files... Then you pipe it straight into another tar to extract it.

I was talking about the Packages folder's size which is present inside RHELDVD mount /a
You are correct about the size but I was thinking how number of files, subdirectories inside a folder vary.

Well, which files are missing?

See the difference in total of files after ls -lrt command. I was referring to this only.
CPied location:



DVD Mount location:



As you're telling that may be because there is difference of file structure in two.

---------- Post updated at 06:41 AM ---------- Previous update was at 05:14 AM ----------

I read it somewhere, the total points to number of file system blocks that the directory's files occupy.

Is that all? You can ignore that. How many blocks it takes is very filesystem-dependent, and CD/DVD filesystems are strange enough a hard drive filesystem is going to be radically different.

If you wanted to, you could back up the entire DVD to hard drive bit-by-bit, filesystem and all, as an ISO file. dd if=/dev/cdrom of=/path/to/filename.iso bs=4M