Re: howto calculate mkiso created iso size from pathspecs?

[Dave Chapman <dave@dchapman.com>]

Daniel Johnson wrote:
> It isn't clear to me from mkisofs(8) how much overhead the iso
> filesystem has.  I don't know how much bigger it will be than the sum
> of the filesizes getting added to the iso.  I assume options like
> rockridge, and joliet will make it slightly bigger.  Exact numbers
> would be nice, but I can live with something like a range from "at
> least" to "at most".  Also is there a way to get mkisofs to predict
> the final filesize without actually writing it?  This would be really
> helpful for writing a script to break a large directory into sets of
> pathspecs that will fit on a single disk.
> 
> If I missed something in the huge manual please forgive me.

I can't help you with your first question, but I think you will find the
"-print-size" option helpful.  It's designed to be used by scripts.

Dave.