how to gzip and scp at the same time

I have a file in which i wanted to zip up and at the same time transfer over to another host using scp.

I tried to do the following command but failed. I do not mind zipping up and scp over later, but i just want to know where did I got it wrong

Am i wrong to use a pipe | over here ?

-bash-3.2$ gzip -c aum.dmp | scp [email protected]:/export/home/oracle/aum.dmp.gz
Usage: scp [-pqrvBC46] [-F config] [-S program] [-P port]
           [-c cipher] [-i identity] [-o option]
       [[user@]host1:]file1 [...] [[user@]host2:]file2

Regards, Noob

Solution 1:

gzip will write to STDOUT, and scp can't handle it.

try

gzip -c aum.dmp | ssh -l  oracle 192.168.0.191 'cat > /export/home/oracle/aum.dmp.gz'

instead.

where

• gzip -c aum.dmp | will gzip aum.dmp, and send result to stdout
• ssh -l oracle 192.168.0.191 will connect to user oracle on 192.168.0.191
• 'cat > /export/home/oracle/aum.dmp.gz' will execute this command

'cat > /export/home/oracle/aum.dmp.gz'

• cat will capture stdin (stdout from command before | )
• > /export/home/oracle/aum.dmp.gz will write to this /export/home/oracle/aum.dmp.gz

the whole purpose of cat part, executed n remote site is to capture gzip result.

Solution 2:

You can use the -C flag to enable compression in scp transfer. This should be enough, although you can check man scp for more details on compression.

Solution 3:

In case you need to get the files/directories from a remote server, into a local archive, you can use tar + gzip inside ssh, and redirect to a local file. For example:

ssh user@server "sudo tar cvzf - /var/log/containers/**/*.log" > containers_logs.tgz

Where:

• c - create archive file.
• v - show the progress.
• z - compress with gzip.
• f - filename of archive.