Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: PID from background ssh
Top Forums Shell Programming and Scripting PID from background ssh Post 302545113 by numetheus on Saturday 6th of August 2011 12:23:30 PM
Old 08-06-2011
PID from background ssh
Hello. I was wondering if someone can help me out with something. To simplify my life, I have written a tiny script to open an ssh tunnel through another linux host so that I can access the esxi hosts on that network using the client. For this I have to tunnel ports 443, 902, and 903. Here is what I have done so far:

Code:
#!/bin/bash
# $1 is the address of the esxi server. Tunnels ports 443, 902, and 903

ssh -f ccox@someserver.somedomain.com -L 443:$1:443 -N
ssh -f ccox@someserver.somedomain.com -L 902:$1:902 -N
ssh -f ccox@someserver.somedomain.com -L 903:$1:903 -N

What I would like to do is have each ssh line record its PID so that I can run a kill script that will get rid of those connections instantly. This will make it easy to jump to the next esxi host.

Does anyone have suggestions? Or even ways to improve this script? lol
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

PID of process started in background??

I am having a problem getting the PID of a process I start in the background is a csh. In tcsh and sh it's simple $! give it to you But in csh this just returns Variable syntax From the man page it should work but it doesn't???? Any help. (2 Replies)
Discussion started by: stilllooking
2 Replies

2. Shell Programming and Scripting

A question about the PID of a background function

Dear all, I'm writing a KornShell script that calls inside it a function in background mode #!/bin/ksh function myfunction { . . .} myfunction |& . . . How can I capture the PID of the function myfunction that runs in background? Thanks in advance :) (2 Replies)
Discussion started by: dariyoosh
2 Replies

3. Shell Programming and Scripting

kill PID running in background in for loop

Guys, can you help me in killing the process which is running in back ground under for loop I am not able to find the PID using ps -afx|grep <word in command I entered> (1 Reply)
Discussion started by: mohan_xunil
1 Replies

4. Shell Programming and Scripting

does the pid of background process show in /proc?

Hi all, I'm reading <advanced bash scripting> and there is a example to kill a background process in a limited time,as shown below: #! /bin/bash #set -n TIMEOUT=$1 count=0 hanging_jobs & { while ((count < TIMEOUT));do eval ' && ((count = TIMEOUT))' ((count++)) sleep 1... (6 Replies)
Discussion started by: homeboy
6 Replies

5. Shell Programming and Scripting

Using ssh to execute a remote script in the background

Help please!! I want to use ssh to execute a remote exe and while it's running I want to query for the process ID of the exe (2 different ssh commands) 1. sshpass -p "<passwd>" ssh -f -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no root@<ipaddress> nohup /tmp/mmds_asyn & 2.... (0 Replies)
Discussion started by: rvompoluTMW
0 Replies

6. Shell Programming and Scripting

Background process, return code and pid.

Hey all, Okay, this one is tricky and I'm not sure there is a niec way to do it, or indeed anyway to do it. The main issue revolves around timing out a hung ssh. I am doing this by creating a wrapper script for the ssh with the following requirements. My requirements are: Defineable... (5 Replies)
Discussion started by: RECrerar
5 Replies

7. Programming

Background SSH using here document

I'm trying to use Here documents to pass several commands to a remote server over SSH. However I'm having problems. The code is as follows: nohup ssh $i_hostname exec /usr/bin/ksh -s << EOF >> $AS_STOPSAP_LOG & echo $i_instname; ps -ef | grep name | grep ${i_instname} |grep -v grep ... (4 Replies)
Discussion started by: doonan_79
4 Replies

8. Shell Programming and Scripting

[SOLVED] Using "$!" to get the PID of the Last Ran Background Process

Hello All, I was looking into creating a script that would be used only to start a Daemon and create a lock file... F.Y.I. It's for Nagios' NRPE Daemon Plugin... Anyway when I run the command to start the Daemon (below): /usr/local/nagios/bin/nrpe -c /usr/local/nagios/etc/nrpe.cfg -d And... (14 Replies)
Discussion started by: mrm5102
14 Replies

9. Shell Programming and Scripting

Ssh in the background

Hi, I am trying to execute an ssh command in my script. ssh abcd@server_name After this command it actually logs in to the server asking for password prompt and then actually logs in to the server. I want all this to be happening in the background and show noithing in the output of my... (8 Replies)
Discussion started by: vital_parsley
8 Replies

10. Shell Programming and Scripting

Executing a background script using ssh keys

Greetings, i've been working with a user-friendly menu on ksh to allow users execute scripts located on a remote server, so they wont have to login and manually launch those scripts every single time. This is a HP-UX box and currently on a /usr/bin/ksh shell. I've setup ssh keys on both... (1 Reply)
Discussion started by: nbriozzo
1 Replies

LEARN ABOUT PLAN9

ssh-keysign

ssh-keysign(1M)                                                                                                                    ssh-keysign(1M)

NAME

       ssh-keysign - ssh helper program for host-based authentication

SYNOPSIS

       ssh-keysign

       ssh-keysign  is  used  by ssh(1) to access the local host keys and generate the digital signature required during host-based authentication
       with SSH protocol version 2. This signature is of data that includes, among other items, the name of the client host and the  name  of  the
       client user.

       ssh-keysign  is  disabled  by  default and can be enabled only in the global client configuration file /etc/ssh/ssh_config by setting Host-
       basedAuthentication to yes.

       ssh-keysign is not intended to be invoked by the user, but from ssh. See ssh(1) and sshd(1M) for more information about host-based  authen-
       tication.

       /etc/ssh/ssh_config

           Controls whether ssh-keysign is enabled.

       /etc/ssh/ssh_host_dsa_key
       /etc/ssh/ssh_host_rsa_key

           These  files  contain the private parts of the host keys used to generate the digital signature. They should be owned by root, readable
           only by root, and not accessible to others. Because they are readable only by root, ssh-keysign must  be  set-uid  root  if  host-based
           authentication is used.

       ssh-keysign will not sign host-based authentication data under the following conditions:

         o  If the HostbasedAuthentication client configuration parameter is not set to yes in /etc/ssh/ssh_config. This setting cannot be overri-
            den in users' ~/.ssh/ssh_config files.

         o  If the client hostname and username in /etc/ssh/ssh_config do not match the canonical hostname of  the  client  where  ssh-keysign  is
            invoked and the name of the user invoking ssh-keysign.

       In  spite of ssh-keysign's restrictions on the contents of the host-based authentication data, there remains the ability of users to use it
       as an avenue for obtaining the client's private host keys. For this reason host-based authentication is turned off by default.

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE         |      ATTRIBUTE VALUE        |
       +-----------------------------+-----------------------------+
       |Availability                 |SUNWsshu                     |
       +-----------------------------+-----------------------------+
       |Interface Stability          |Evolving                     |
       +-----------------------------+-----------------------------+

       ssh(1), sshd(1M), ssh_config(4), attributes(5)

AUTHORS

       Markus Friedl, markus@openbsd.org

HISTORY

       ssh-keysign first appeared in Ox 3.2.

                                                                    9 Jun 2004                                                     ssh-keysign(1M)
All times are GMT -4. The time now is 05:16 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy