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Ssh And Scp Without Typing A Password Each Time

* You can create and exchange ssh keys to avoid repeatedly typing your password.
Source:      ssh-keygen -t dsa                                     Type this once per log-in session
Source:      Now copy the .ssh/id_dsa.pub file to .
Source:      scp .ssh/id_dsa.pub userid@:tempid        we've renamed it tempid.
Destination: cat tempid >> .ssh/authorized_keys                     
add the contents of tempid to .ssh/authorized_keys.
Destination: rm tempid. 

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