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SSH in SSH

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# 1  
Old 02-14-2014
SSH in SSH
Hello,


I'm trying to make a ssh in another ssh like below:

Code:
ssh user1@ip1 'ssh user2@ip2 'cd /path; ls -lrt | grep CcnMeasureJob | tail -1 | cut -d " " -f 10 | xargs -I{} scp {} user3@ip3:/path3 ''

The problem is that everything dies after the second ssh ("cd /path is not regognized").
I mention that doing like this is the only way I can copy the desired file in the desired location, but it seems there is sort of syntax error.


Please help me about this.
Thank you
Last edited by Scrutinizer; 02-15-2014 at 03:48 AM.. Reason: code tags also for data
# 2  
Old 02-14-2014
Try adding the -t switch to the first ssh command. Also, make sure the second server is accessible from the first one.

Code:
ssh -t user@server1 ssh user@server2 'commands-to-run'

# 3  
Old 02-15-2014
I tried with ssh -t command, the output is like below:

Code:
ssh -t user@server1 ssh user@server2 'cd /path_server2/; pwd'

Code:
/home_server1
Connection to server1 closed.

It still doesn't want to change the execute commands in server2, although this is accesible from server1
# 4  
Old 02-15-2014
To do they type of tunneling I typically use nc (or netcat) on server1 and a ProxyAlias in your .ssh/config like this:

Code:
host server2
ProxyCommand ssh server1 nc %h %p

They you can go direct to server2 eg:

Code:
$ ssh user@server2 'cd /path_server2/; pwd'

This ProxyCommand config be further simplified and the need for nc to be installed on server1 avoided, if you have OpenSSH version 5.3 or later you can use:

Code:
ProxyCommand ssh server1 -W %h:%p

# 5  
Old 02-15-2014
I managed to do it finaly like this:

Code:
ssh user1@host1 'ssh user2@host2 ' ./launch_script.sh ''

,where in launch_script.sh I put the desired code.

Like this it wanted to run correctly.
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