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SSH non-interactive

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# 1  
Old 05-12-2010
SSH non-interactive
Hi,

I want to know how to use SSH non-interactively? I am already able to use
Code:
sftp -b <batch file> user@host

so public/private key set-up already is in place.
But my supervisor has told me to use SSH now I want to know how it can be done? I want to do something like:
Code:
done_files=`ssh ls /remote/path/*.done user@host`

Can this be done? Is there a batchmode option for SSH as well?
Please suggest.
-dips
# 2  
Old 05-12-2010
Sure, man ssh shows all the options for it. Just try it out? Smilie

It might be written like
Code:
done_files=`ssh user@host ls /remote/path/*.done`

Helpful options in scripts are -o "BatchMode yes" and -o "ConnectTimeout 3".
# 3  
Old 05-12-2010
If you are talking about transmitting files, use scp. scp is the SSH version of ftp or copy. You can learn more about scp by typing:
Code:
man scp

If you are talking about executing a set of commands on the target system, then ssh is still your tool. Type
Code:
ssh user@system 'command or script.sh with parameters'

# 4  
Old 05-12-2010
Quote:
Originally Posted by dips_ag
But my supervisor has told me to use SSH
... his request doesn't make sense; you are using ssh. sftp connects with pure ssh. scp also connects with pure ssh. It's all the same protocol.

Now if he really is asking you to shoehorn file copying into remote shell, you can usually abuse tar to get the job done.

Code:
tar -cf - files-to-transfer | ssh user@host tar -C dest-dir -xf -

Code:
ssh user@host tar -cf - files-to-transfer | tar -C dest-dir -xf -

...but really, sftp and scp are already there for precisely this. If you have ssh, you have sftp and scp.

Still, little cause for complaint I suppose if they're at least letting you use keys!
# 5  
Old 05-12-2010
Hi,

I tried
Code:
done_files=`ssh user@host ls /remote/path/*.done`

also
Code:
done_files=`ssh user@host "ls /remote/path/*.done"`

but it threw error:
Code:
+ done_files=ssh
./test_ssh.ksh[8]: user@host: not found

But I was able to do it in interactive way
Code:
ssh user@host

also I am able to do
Code:
sftp -b <batch file> user@host

What am I doing wrong?

Hi Corona688,
I would not know the names of files to download. First I'll have to make a list of .done files and then have to use SCP to copy them. And then rename them again to .complete using SSH.
That's the way I've been told to do.
-dips
# 6  
Old 05-12-2010
It really doesn't like being in backticks... Odd. Hmm. Make the script a file and redirect it into ssh, a shell should be able to run that.

Code:
ssh user@host /bin/sh < scriptfile

# 7  
Old 05-12-2010
Thanks Corona688! It worked perfectly fine!! I used ssh in backticks coz I was using sftp in backticks Smilie
-dips
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