http://en.wikipedia.org/wiki/List_of_free_and_open-source_software_packages
http://www.parallels.com/download/plesk/11.5/documentation/
http://www.parallels.com/download/plesk/11/documentation/
http://econsultancy.com/lt/blog/8054-15-best-practice-tips-for-improving-email-deliverability
http://fuscata.com/kb/set-maxclients-apache-prefork
http://www.linuxatemyram.com/
http://www.thegeekstuff.com/2010/07/logrotate-examples/
PLESK 11.5 kelios PHP versijos
https://www.frozentux.net/documents/iptables-tutorial/
https://raamdev.com/2013/cleaning-evalbase64_decode-from-a-hacked-wordpress-website-via-ssh/http://perishablepress.com/stupid-htaccess-tricks/
http://stackoverflow.com/
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