Transfer files wih directory structure. - Page 2 - SCO

era · #8 04-27-2008

If you find that the reason you can't tar a big file is that the file system sets a limit, it would seem reasonable to conclude that you ought to be able to tar it in smaller pieces. tar | split will allow you to break up the tar file in fragments which you can cat together at the other end.

fabtagon · #9 04-27-2008

Well, then I wonder why you do bother with creating that tarball locally. Stream it using ssh and you're done.

uxlunatick · #10 04-28-2008

The server has OpenServer 5.0.5 which does not have ssh natively and it was never installed. It is on its way out from my server "park."

uxlunatick · #11 04-28-2008

Quote:

Originally Posted by era

If you find that the reason you can't tar a big file is that the file system sets a limit, it would seem reasonable to conclude that you ought to be able to tar it in smaller pieces. tar | split will allow you to break up the tar file in fragments which you can cat together at the other end.

Can you provide an example?

era · #12 04-28-2008

I have GNU tar and GNU split and GNU tail. I don't know if those are available for SCO (lawsuit time? <ducks>) but you might be less lucky with the built-in variants, for example in whether split accepts human-readable big numbers (I calculated 1024*1024*512 and put that in here, but GNU split would allow simply "512m") and, more crucially, whether it can read standard input when you say "-"

Split demonstrated:

Code:

vnix$ echo fnord | split -d -b 3 - fnord.
vnix$ ls fnord.*
fnord.00  fnord.01
vnix$ tail fnord.*
==> fnord.00 <==
fno
==> fnord.01 <==
rd

Archiving:

Code:

tar whatever | split -a 4 -d -b 536870912 - whatever.tar.

-d means use numeric suffixes, -a 4 means create suffixes of length 4, -b bignum is how big each file can be.

Dearchiving:

Code:

cat whatever.tar.* | tar xvf -

Make sure you have enough digits in the suffix so that cat will not put them in the wrong order! I believe the wildcard should expand to an alphabetic list on all platforms.

I've done this when I had to make backups to an USB drive which was FAT formatted so it only accepted (IIRC) max 2 gigs in one file, but this is untested, from memory.

I suggest you try to create a big file with dd like fabtagon proposed, just to check that your coordinates are not completely off.

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