====== secure shell stuff ======
===== keygen =====
 
  ssh-keygen -t rsa -b 2048

choose an empty passphrase and the default file locations.

===== remote login =====

copy ''$HOME/.ssh/id_rsa.pub'' to the remote host $''HOME/.ssh/authozized_keys''
  cat ~/.ssh/id_rsa.pub | ssh user@host "cat >> .ssh/authorized_keys
when everything worked, this is the last time you need to enter you password when sshing to ''user@host''.