remote ssh commands?

jpc82 · Guru Joined: 09 Mar 2003 Posts: 326

I'm trying to write a tcl script for my current co-op job and I've almost got it, but I've run into a problem.

What my script will do is redeploy a WebSphere Application. My problem is that the once I remove the application from the server I need to cleanup the files that are still on the node, which is a different computer.

Is there anyway to execute my cleanup script on a remote computer from inside the tcl script?

Note: the only access I have to the remote computer is ssh

Antonio · Posted: Fri Sep 26, 2003 1:49 pm Post subject:

you can pass a command to the ssh program (i am not sure about the syntax):
ssh root@192.168.1.1 delete_all_cores

so, the ssh will ask the password and will run the script delete_all_cores at 192.168.1.1

hope it helps,

anTONIo

nephros · Posted: Fri Sep 26, 2003 1:49 pm Post subject:

Have you tried this:

jpc82 · Guru Joined: 09 Mar 2003 Posts: 326

I was reading the man page and I found out how to add a command to run, like nephros, and Antonio suggested. Now my problem is the password.

I don't see a switch that allows you to place the password in the command line, is there any way of doing this?

jpc82 · Guru Joined: 09 Mar 2003 Posts: 326

I'm wondering if I could place the password in a variable and then redirect stdin to the variable, but I can't get it to work.

this is what I tried

ssh 127.0.0.1 "ls -l" < test

and test is a file that has one line, which is the password

Sieg · Tux's lil' helper Joined: 07 Oct 2002 Posts: 87

as nephros said, for that you'll have to use key authentication, which does not require many changes with DSA.

http://www-106.ibm.com/developerworks/linux/library/l-keyc.html

Above is a pretty good explanation on the subject.

Hope this helps

jpc82 · Guru Joined: 09 Mar 2003 Posts: 326

I really doubt I will be able to do that since once I'm done with this srcipt and I've tested it on our acceptence environment, they will be putting it on thier production environment. And they don't make any security changes to thier production environment unless there is very good reason to do so.

And the process to get a change made is a very slow one.

Any other way to get around this problem would be great.

Thanks in advance

jpc82 · Guru Joined: 09 Mar 2003 Posts: 326

I have one more thing to add.

I'm ok with the script prompting the user for a password. My only problem is that I will need to run multiple scripts remotly at differnt time, and I don't want to have to prompt the user for the same password 3-4 times.

I know how to prompt the user for the password and then capture it in a variable using tcl, however I just can't figure out how to use that variable to input the password to the ssh command

CMI · Apprentice Joined: 19 Aug 2003 Posts: 205

Can you SSH in, echo the contents of a local file through SSH into a file via piping "> file", execute, delete, pipe, execute, delete...

That way you only use one connection for as many different scripts and executions as you want.