Script to establish SSH tunnel and then run another program that uses the tunnel

Posted by Rob Hills on Ask Ubuntu See other posts from Ask Ubuntu or by Rob Hills
Published on 2012-08-29T21:23:23Z Indexed on 2012/08/29 21:51 UTC
Read the original article Hit count: 655

Filed under:

ssh

|

scripts

|

postgresql

I am running a GUI app (Gnucash) that connects to a remote Postgres database via a secure shell session. I can use the SSH -L command to tunnel a local port and then separately run Gnucash and this works fine.

What I'd like to do is use a single shell script that sets up the tunnel and then calls Gnucash. Is that possible? If so, how do I do it? Currently, I run commands like the following in 2 separate terminal windows:

ssh -L 5433:127.0.0.1:19097 [email protected] gnucash postgres://gnucash@localhost:5433/gnucash_db

If I simply put both lines in a shell script, the first line drops me into the remote shell and the second line doesn't execute until I exit the remote shell.

TIA, Rob Hills

© Ask Ubuntu or respective owner

Related posts about ssh

Problem with hadoop start-dfs.sh

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I installed and configured hadoop on my Ubuntu 14.04 server, virtualized inside of hyper-v, however I am getting an issue when i run start-dfs.sh root@sUbuntu01:/var/log# start-dfs.sh 14/06/04 15:27:08 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java… >>> More
SSH problems (ssh_exchange_identification: read: Connection reset by peer)

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I was running 11.10 and decided to do the full upgrade and come up to 12.04 after the update SSH (not SSHD) is now misbehaving when attempting to connect to other OpenSSH instances. I say OpenSSH as I am running a DropBear sshd on my router and I am able to connect to it. When attempting to connect… >>> More
SSH main process ended

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I have a running ubuntu server 10.04.1. When I tried to login to the server via ssh, I could not. Instead, I got connection refused error. I tried to ping the machine and I got reply! So, the clear reason is that SSH daemon is stopped. After reboot, I was able to login to my server via ssh. After… >>> More
SSH server not working (respawns until stopped)

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I have a running Ubuntu Server 10.04.1. When I tried to login to the server via ssh, I could not. Instead, I got connection refused error. I tried to ping the machine and I got reply! So, the clear reason is that SSH daemon is stopped. After reboot, I was able to login to my server via ssh. After… >>> More
Cannot SSH after resetting firewall on VPS

as seen on Server Fault - Search for 'Server Fault'
I'm having trouble trying to SSH to my Debian 5 VPS with blacknight. It was working fine until I did the following: Logged into 'Parallels Infrastructure Manager' - Container - Firewall - Set to 'Normal Firewall settings'. It told me there was an error with the IPTables and offered the option again… >>> More

Related posts about scripts

SYS2 Scripts Updated – Scripts to monitor database backup, database space usage and memory grants now available

as seen on SQL Blog - Search for 'SQL Blog'
I’ve just released three new scripts of my “sys2” script collection that can be found on CodePlex: Project Page: http://sys2dmvs.codeplex.com/ Source Code Download: http://sys2dmvs.codeplex.com/SourceControl/changeset/view/57732 The three new scripts are the following sys2.database_backup_info… >>> More
How to create scripts that create another scripts

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I am writing an script that needs to generate another script that will be used to shutdown an appserver... This is how my code looks like: echo "STEP 8: CREATE STOP SCRIPT" stopScriptContent="echo \"STOPING GLASSFISH PLEASE WAIT...\"\n cd glassfish4/bin\n chmod +x asadmin\n ./asadmin stop-domain\n #In… >>> More
Database Change Management - Setup for Initial Create Scripts, Subsequent Migration Scripts

as seen on Stack Overflow - Search for 'Stack Overflow'
I've got a database change management workflow in place. It's based on SQL scripts (so, it's not a managed code-based solution). The basic setup looks like this: Initial/ Generate Initial Schema.sql Generate Initial Required Data.sql Generate Initial Test Data.sql Migration 0001_MigrationScriptForChangeOne… >>> More
Why is 50.22.53.71 hitting my localhost node.js in an attempt to find a php setup

as seen on Super User - Search for 'Super User'
I just created a new app using angular-fullstack yeoman generator, edited it a bit to my liking, and ran it with grunt on my localhost, and immediately upon starting up I get this flood of requests to paths that I haven't even defined. Is this a hacking attempt? And if so, how does the hacker (human… >>> More
SQL SERVER – Introduction to Extended Events – Finding Long Running Queries

as seen on SQL Authority - Search for 'SQL Authority'
The job of an SQL Consultant is very interesting as always. The month before, I was busy doing query optimization and performance tuning projects for our clients, and this month, I am busy delivering my performance in Microsoft SQL Server 2005/2008 Query Optimization and & Performance Tuning Course… >>> More