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-Using tar and ssh to efficiently copy files preserving permissions
- Have you had situations where disk-space is sparse, so making full  tars (although compressed) is impossible? Here is an ssh trick that  could help you copy over files without using too much diskspace.
-This trick will tar a directory from a computer, but the file that it  would normally create, is standard out, so it is redirected back to the  script on the computer you are working on. The computer you are working  on extracts the information directly, so there is no location where  (redundant) files are stored.
-ssh user@machine-where-precious-data-is "tar czpf - /some/important/data" | tar xzpf - -C /new/root/directory
-You are now directly copying data from the  "machine-where-precious-data-is" to the machine you are working on,  using the benefits of tar (preserving permissions, links, etc) but not  being hindered by the difficulties of tar. (making these possibly large  files and so on.)
- I used this trick to copy users directories from one machine to the other.
-An alternative command, reverse and not crossing filesystem boundries:
-tar cpf - /some/important/data | ssh user@destination-machine "tar xpf - -C /some/directory/"
- • Articles
-• Robert de Bock
-• Add new comment
-Comments
-Tue, 08/12/2014 - 17:02 — Kai (not verified)
-Also, if you wish to create a
-Also, if you wish to create a remote backup tar, tar into an ssh-pipe which remotely cats stdin into your target file:
-tar czf - -C /path/to/source files-and-folders | ssh user@target-host "cat - > /path/to/target/backup.tar.gz"
-• reply
-Wed, 08/06/2014 - 12:26 — Amyvcb10 (not verified)
-I have always had issues with
-I have always had issues with managing disk-space. I was looking for a  perfect solution to copy files efficiently without using too much disk  space. I have never used tar and ssh for copying files and I am  impressed with this method. snore stop
-• reply
-Sat, 06/07/2014 - 10:25 — Limdi (not verified)
-Easy way to monitor transfer
-Easy way to monitor transfer speed: pv
- Just put it between two pipes. a | pv | b pipes a to pv to b.
- apt-get install pv
-Example:
- ssh user@machine-where-precious-data-is "tar czpf - /some/important/data" | pv | tar xzpf - -C /new/root/directory
-• reply
-Thu, 01/23/2014 - 11:12 — Angelo Schneider (not verified)
-Some people call this command
-Some people call this command sequene "wondertar" or "wonder tar", so I write it here to make it easier to google for :D
-• reply
-Sun, 11/24/2013 - 13:31 — Alex (not verified)
-Is there any way to display
-Is there any way to display progress and transfer speed?
-• reply
-Thu, 07/18/2013 - 22:26 — Dean (not verified)
-Any idea what to do if I'm
-Any idea what to do if I'm getting a broken pipe message?
-• reply
-Mon, 12/17/2012 - 15:43 — KrK (not verified)
-Mistake is in the 2nd
-Mistake is in the 2nd example. "tar cXpf" - 'X' option is for excluding files and exclude file is not specified.
- Also you may consider to use '-C' option for ssh instead of using 'z' as tar option in the 1st example.
- On some UNIXes, like HP-UX or Solaris 'z' is not supported by the system default tar.
-• reply
-Wed, 12/19/2012 - 09:16 — Robert de Bock
-You are correct, removed the
-You are correct, removed the "X". Well spotted, thanks!
-• reply
-Sun, 12/23/2012 - 01:23 — KrK (not verified)
-NP. Btw, thx for the article.
-NP. Btw, thx for the article. I work with different UNIXes for almost  9 years and usually i do not memorize all commands and their options.  MAN helps of course, but i prefer to google for articles like this one. I  knew what i wanted to do, i knew which commands will do this, i even  used them exactly this way like year ago. But brain do not keep rarely  used information and your article just gave me an example of command  line which will do the stuff, helped me to recall. So such articles are  useful for UNIX newbies of course, but also may save time for ppl with  experience. Good luck. :)
-• reply
-Tue, 08/10/2010 - 08:53 — Stefan (not verified)
-Perfect: ssh
-Perfect:
-ssh user@machine-where-precious-data-is "tar czpf - /some/important/data" | tar xzpf - -C /new/root/directory
-Thanks for a wicked useful trick!