Hi all,

I have N number of AIX hosts, where I need to login frequently and do some routine tasks (run some scripts). I need to setup ssh public/private key, so I can auto-login via a master (wrapper) script and run each script in each server.

I am trying to setup/generate ssh keys, but am facing some problems. Here's what I have done:

- Generate ssh keys, as follow:

haroon_a@myhost1:/home/haroon_a/.ssh > ssh-keygen -t rsa
Generating public/private rsa key pair.
Enter file in which to save the key (/home/haroon_a/.ssh/id_rsa):
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /home/haroon_a/.ssh/id_rsa.
Your public key has been saved in /home/haroon_a/.ssh/id_rsa.pub.
The key fingerprint is:
a2:92:49:ed:a8:c6:18:9d:ec:64:f5:fe:70:e7:09:fe haroon_a@myhost1
haroon_a@myhost1:/home/haroon_a/.ssh > ls -ltr
total 3
-rw-r-----   1 nbkysrj  staff           232 Oct 28 07:59 id_rsa.pub
-rw-------   1 nbkysrj  staff           887 Oct 28 07:59 id_rsa
haroon_a@myhost1:/home/haroon_a/.ssh > scp id_rsa.pub haroon_a@myhost2:.ssh/authorized_keys2

ssh to host2
execute script1
execute script2
 
ssh to host3
execute script1
execute script2
 
ssh to host4
execute script1
execute script2

Hi,

the good news - your script works It does exactly what you tell it to do.

The bad news - if you want just remote execution you should rather use the rsh command facilities rather than ssh and than pull the output. Obviously bad for security.

Kind regards
zxmaus

Thanks for the hints and advise. I'll look into rsh.

In the meantime, I am working on my script, and want to re-use portions of my code (BTW, I'm not an expert in shell scripting), so I decided to use a function. So, here's what I'm trying to use function, but I can't get it to work, Please bare with me.

#!/bin/sh
#some codes here
...
printThisWord "Hey, You printed me!!"
...
# some more code here
 
printThisWord () {
echo "$1"
}

myscript.sh[32]: printThisWord:  not found

In the shell script, printThisWord () {...} needs to come before you first try to call printThisWord.

On the ssh side, you can run commands remotely as follows:

ssh user@remotehost "df -k ; ls /"

Thanks you. It worked, when I moved the function before its call.

I have another question:

I want to cancatenate value of some variables, and pass it to another functin. i.e.

aFunction() {
echo "$1"
}
 
msg1="some message\n"
msg2="some other message\n"
msg3="even some more message\n"
 
msgs="$msg1 $msg2 $msg3"
 
aFunction $msgs

The reason is you do not protect your variable by quoting it:

afunction "$msg"

Absolutly correct, bak! That simple, yet important--at least in my case--trick, did the job. Thanks alot.