Micro-Recipe: Generate keys for passwordless SSH & SCP

Micro-recipe to avoid entering your password each time you do an ssh or an scp from a local machine to a remote one.

Local machine (enter passphrase each time) ->

• ssh-keygen -t rsa1
• ssh-keygen -t dsa
• ssh-keygen -t rsa (if you do only one, do this one)
  

Remote machine ->

• Append the content of each of the local ~/.ssh/identity.pub, ~/.ssh/id_dsa.pub, ~/.ssh/id_rsa.pub files to the remote ~/.ssh/authorized_keys one each time on a separate line.

Local machine ->

• Execute this script every time you restart your linux box to start the ssh agent.

ssh_info_file=~/.ssh-agent-info-`hostname`
ssh-agent >$ssh_info_file
chmod 600 $ssh_info_file
. $ssh_info_file
for i in identity id_dsa id_rsa
do
ssh-add ~/.ssh/$i
done

Attach each shell to the ssh agent.

• . ~/.ssh-agent-info-`hostname`

Complete recipe: http://www.cvrti.utah.edu/~dustman/no-more-pw-ssh/