**> ls -l .ssh
https://help.ubuntu.com/community/SSH/OpenSSH/Keys


I suggest you use passphrase...
Get the "ramdonart image"


**> ssh-keygen -t rsa
**> ls -l .ssh
**> more .ssh/*

**> ssh www.cs.unca.edu
**> w
**> exit

**> more .ssh/*
**> cd .ssh
**> cat id_rsa.pub >> authorized_keys

**> cd

**> ssh www.cs.unca.edu                   #  SHOULD NOT TYPE LOGIN PASSWORD



--- why are we doing this ---

Remote login from home....
    on Mac/Linux
        can use ssh (if installed)
    on Windows/Mac/Linux
        can use putty (if installed)
Remote file transfer from home....
    on Mac/Linux
        can use sftp (if installed)
    on Windows/Mac/Linux
        can use filezilla (if installed)