Putty

http://forum.ubuntu.ir/index.php?topic=11092.0

 

http://www.vpspro.org/knowledgebase.php?action=displayarticle&id=1

 

http://askubuntu.com/questions/463618/setting-up-subdomain-on-ubuntu-server

 

https://www.digitalocean.com/community/tutorials/how-to-configure-the-apache-web-server-on-an-ubuntu-or-debian-vps

 

https://www.linode.com/docs/websites/apache/apache-web-server-on-ubuntu-14-04

 

http://superuser.com/questions/467398/how-do-i-exit-an-ssh-connection