[nflug] copy (cp) large number of files

[Ken Smith]

On Tue, 2006-04-25 at 10:43 -0400, Jason Lasker wrote:
> I ran into this problem too and used a tar pipe to copy files...
> 
> tar -cf - directory | (cd parent; tar -xf -) 
> 
> Check you tar options for the proper switches/parameters
> 

I usually use "-xpBf" on the tar doing the extracting (second one).  The
"p" means preserve everything possible (owner/group/perms/timestamps)
and the "B" locks the blocking factor at something sane for a pipe (tar
still thinks it's talking to a tape drive by default and if for some
reason the first read is a bit short it can decide to use a small block
size which makes it pretty inefficient).

And for those of you with multiple machines and data that needs to move
amongst them this can work as well:

tar -cf - directory | ssh target-machine "(cd parent; tar -xpBf -)"

:-)

-- 
                                                Ken Smith
- From there to here, from here to      |       kensmith at cse.buffalo.edu
  there, funny things are everywhere.   |
                      - Theodore Geisel |


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