SSH without password
        --------------------

===========================================================================================================================
[user1@computer1]$ ssh-keygen -t rsa

[user1@computer1]$ ssh -l user2 computer2 mkdir -p .ssh
user2@computer2's password: ...

[user1@computer1]$ cat .ssh/id_rsa.pub | ssh -l user2 computer2 'cat >>
.ssh/authorized_keys'
user2@computer2's password:

[user1@computer1]$ ssh -l user2 computer2       <--- OK without Password
[user2@computer2]$

===========================================================================================================================
                rsync
===========================================================================================================================
#rsync -e ssh -av /local/testrsync/
yourusername@yourserver.com:/remote/testrsync

‘-e ssh’ - tells it to use ssh to connect to your server.
‘-av’ - tells it to be verbose and use something called ‘archive mode’ (which
basically says you want to copy everything in this dir and to preserve file
time stamps).


===========================================================================================================================
                Deploy
===========================================================================================================================
[ Test ]
#rsync -e ssh -av /disk2/web/httpd/htdocs/testrsync/ root@192.168.1.243:/..../htdocs/testrsync/


[ Contingencia: 192.168.1.21 ]
#rsync -e ssh -av root@192.168.1.243:/web/httpd/htdocs/ /disk2/web/httpd/htdocs/