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Operating Systems AIX Passwordless root authentication via SSH Post 302146377 by aix_guy on Tuesday 20th of November 2007 08:39:15 AM
Old 11-20-2007
and to make it a bit easier...

So you generated your public key on the local system using ssh-keygen...now you need to copy it to the remote system and append right?


1. cd into /root/.ssh on your source box
2. Use this command:

cat *.pub | ssh <hostname> "cat - >> /root/.ssh/authorized_keys"

You will read out the the contents of your rsa/dsa .pub keys, using ssh to copy and append to the destination host. After you type the password (for the last time), then try again something simple such as:

ssh <hostname> date

And if you've done everything correctly, no password.
 

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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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