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Top Forums Shell Programming and Scripting Shell script using expect to login to couple of remote servers and read "crontab -l" Post 302781145 by verdepollo on Friday 15th of March 2013 03:39:32 PM
Old 03-15-2013
Using key authentication would probably be a better idea than expect as it's easier and much more secure.

Something along these lines:
Code:
for server in server1 server2 server3 
do
     ssh username@$server -C "crontab -l someuser" >> cron.log
     ssh username@$server -C "cat /etc/rc.local" >> rc.local.log
     ssh username@$server -C "other commands" >> stuff.log
done

You'll be creating three connections per server however, but there's no way that I'm aware of to redirect the output to three different files locally within a single connection, unless you redirect the whole output to a single file and then do some post-processing work with awk/sed/perl/etc.
 

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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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