topic Re: Q about scp in Operating System - Tru64 Unix

Q about scp

Bouda16 — Thu, 27 Sep 2007 07:49:25 GMT

Hello
Is it possible to stream data from remote system using scp?
I mean like get huge file from some remote system and compress it before writing it to local disk.

Regards
Josef

Re: Q about scp

Ivan Ferreira — Thu, 27 Sep 2007 07:54:30 GMT

You can use something like this:

gzip -c | ssh dd of=/tmp/.gz

You have to replace by real host/files.

Re: Q about scp

Bouda16 — Thu, 27 Sep 2007 08:00:51 GMT

If I undestand it correctly, the packing process would by running on source server, but I need to run it on destination server :-(

Re: Q about scp

Ivan Ferreira — Thu, 27 Sep 2007 08:11:56 GMT

Then, you can try this:

This is executed on the host that is the source for the file:

sourcehost> dd if= | ssh "gzip > /tmp/.gz"

Or

This is executed on the host that is the destination for the file:

dsthost> ssh dd if= | gzip > /tmp/.gz

Welcome to the forum, please keep asigning points, if you are unsure how to do it, please review:

http://forums1.itrc.hp.com/service/forums/helptips.do?#28

Re: Q about scp

Mark Poeschl_2 — Thu, 27 Sep 2007 10:15:05 GMT

Bear in mind that any use of scp/ssh is going to be quite slow. With GigE infrastructure, I am anly able to achieve ~75 Mbps throughput for a single ssh/scp stream.