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Top Forums Shell Programming and Scripting bash script to execute a command remote servers using ssh Post 302618295 by complex.invoke on Tuesday 3rd of April 2012 10:20:39 PM
Old 04-03-2012
A better way to accomplish this is to invoke the script which contains the commands that you want to be executed at the remote server
Code:
for ip_addr in $(cat hostname.txt); do
     ssh ${ip_addr} "bash -s" < script_to_be_invoked
done

As you'll see that, this way
Code:
ssh ip_addr "commands"

won't work properly while the "commands" is getting longer!
Look at this https://www.unix.com/shell-programmin...te-server.html
The reason why your commands will only be run on the first host connected to is detailed explained here
http://72.14.189.113/howto/shell/while-ssh/

Last edited by complex.invoke; 04-03-2012 at 11:31 PM..
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SSH-COPY-ID(1)						      General Commands Manual						    SSH-COPY-ID(1)

NAME
ssh-copy-id - install your public key in a remote machine's authorized_keys SYNOPSIS
ssh-copy-id [-i [identity_file]] [user@]machine DESCRIPTION
ssh-copy-id is a script that uses ssh to log into a remote machine and append the indicated identity file to that machine's ~/.ssh/autho- rized_keys file. If the -i option is given then the identity file (defaults to ~/.ssh/id_rsa.pub) is used, regardless of whether there are any keys in your ssh-agent. Otherwise, if this: ssh-add -L provides any output, it uses that in preference to the identity file. If the -i option is used, or the ssh-add produced no output, then it uses the contents of the identity file. Once it has one or more fin- gerprints (by whatever means) it uses ssh to append them to ~/.ssh/authorized_keys on the remote machine (creating the file, and directory, if necessary.) NOTES
This program does not modify the permissions of any pre-existing files or directories. Therefore, if the remote sshd has StrictModes set in its configuration, then the user's home, ~/.ssh folder, and ~/.ssh/authorized_keys file may need to have group writability disabled manu- ally, e.g. via chmod go-w ~ ~/.ssh ~/.ssh/authorized_keys on the remote machine. SEE ALSO
ssh(1), ssh-agent(1), sshd(8) OpenSSH 14 November 1999 SSH-COPY-ID(1)
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