how to exit ssh session


 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting how to exit ssh session
# 1  
Old 11-27-2011
Question how to exit ssh session

Hi ,
I am running a script on multiple servers.When I run that script on one server,I want to exit from that server and want to go to next server.PFB script:
Suppose there are 3 servers:server1,server2,server3.I am currently in server1.

Code:
 for h in {2..3}
  do
    ssh username@server$h <<EOF
    echo "server$h" >>res1.txt
    echo "hi">>res1.txt
    exit
    EOF
done

Its givine me error"unexpected end of file".Can you please help.

Last edited by DukeNuke2; 11-27-2011 at 07:26 PM..
# 2  
Old 11-27-2011
have a look at the tool "expect".

expect(1) - Linux man page
# 3  
Old 11-27-2011
Quote:
Originally Posted by sonu141
Its givine me error"unexpected end of file".Can you please help.
You're getting an unexpected end of file because your EOF has whitespace in front of it. It must be the first token on the line (no indention).
# 4  
Old 11-28-2011
Thanks Agama.It worked but I have another problems:
1.I am ruuning this script on multiple servers but I want the output to be save in same file at one location.

2.I am getting error "Pseudo-terminal will not be allocated because stdin is not a terminal",should I use
ssh -t -t username@server$h <<EOF
# 5  
Old 11-28-2011
The psuedo terminal message is just a warning. It is being issued because you are redirecting the commands in from the here doc. If you use the -t options, you'll see the message of the day -- something you probably don't want. In my opinion you can ignore the message.

If you want output from all scripts in one file on the host that is generating the commands, then do something like this:

Code:
for h in host1 host2 host3
do
   ssh user@$h <<END
   hostname
END
done >/tmp/output

This will write the output of the hostname command from each host in the tmp file.
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

SSH session in perl.

Is it possible to ssh to a server in perl and execute multiple commands without doing them all at once? I know I can potentially do something like system( 'ssh user@server "cd directory; grep blah *; curl someurl.com"'); However, I'd like the functionality where I don't have to keep SSHing... (3 Replies)
Discussion started by: mrwatkin
3 Replies

2. UNIX for Dummies Questions & Answers

SSH session

I ran a job using SSH and then used screen command followed by space bar. Then I ran the job. But after some hours, the internet connection was lost.This had happened to me before. I used to run the whole job again. Today I came across the fact that I could restart the jobs without having to do it... (2 Replies)
Discussion started by: nellierd
2 Replies

3. Shell Programming and Scripting

SSH session saving

Hi, I want to execute some script on the remote session and transfer the processed file on remote machine to local machine. I tried with ssh-keygen and ssh-copy-id but seems that this has been disable on the remote machines, Is there any possiblity that I can save the remote username and... (7 Replies)
Discussion started by: maruthavanan
7 Replies

4. HP-UX

ssh session getting hung (smilar to hpux telnet session is getting hung after about 15 minutes)

Our network administrators implemented some sort of check to kill idle sessions and now burden is on us to run some sort of keep alive. Client based keep alive doesn't do a very good job. I have same issue with ssh. Does solution 2 provided above apply for ssh sessions also? (1 Reply)
Discussion started by: yoda9691
1 Replies

5. HP-UX

SSh session hang

Hello, When I connect to a HP-UX 11.23 and/or 11.31 after a time without activity, the session hang. There is not TMOUT stablished, and the session NOT finish, always keep hang after about 20min of inactivity period. Anyone knows if this problem is related to HP-UX or network... (1 Reply)
Discussion started by: RuBiCK
1 Replies

6. Shell Programming and Scripting

could not send commands SSH session with Net::SSH::Expect

I am using Net::SSH::Expect to connect to the device(iLO) with SSH. After the $ssh->login() I'm able to view the prompt, but not able to send any coommands. With the putty I can connect to the device and execute the commands without any issues. Here is the sample script my $ssh =... (0 Replies)
Discussion started by: hansini
0 Replies

7. Shell Programming and Scripting

Finding out if you are in an ssh session

Hey, I'm trying to build customized behavior in a bash script for when it is run within an ssh session. This is how I'm finding out if the current session is ssh: USER=`whoami` ... (3 Replies)
Discussion started by: neked
3 Replies

8. Solaris

mbx_bad_handle during ssh -X session

We have a Solaris 10 server that we're migrating an old Cadre Teamwork application to. We find that when users on Sun workstations use ssh -X <username>@<new server> and run Teamwork on this new server it is fine. When cygwin users and linux users run ssh -X to get to this new platform they... (0 Replies)
Discussion started by: pzxkys
0 Replies

9. Shell Programming and Scripting

scripting an ssh session?

I know the root login/password for a machines, and I want to automate some commands like this from each: ssh root@remoteHost1 "tail /var/log/messages" ssh root@remoteHost2 "tail /var/log/messages" ssh root@remoteHost3 "tail /var/log/messages" ssh root@remoteHost4 "tail /var/log/messages" ssh... (2 Replies)
Discussion started by: jjinno
2 Replies

10. UNIX for Dummies Questions & Answers

Why does my webserver stop everytime I exit my session?

Hi, We have a webserver which runs on our unix server, we had to stop it for some work to be carried out, and restarted it earlier this week. I'm logging in as myself and then root and starting the webserver as follows: cd /etc/init.d ./northgate.web start this starts it up fine,... (6 Replies)
Discussion started by: kenny123m
6 Replies
Login or Register to Ask a Question

Featured Tech Videos