Joomla!®Plug

Hi all

I try desesperatly to create a demo website as I explain in the Joomla forum....
http://forum.joomla.org/viewtopic.php?f=32&t=237012

People of forum give me a unique solution for do that and consist to install 2 small SH script:

http://www.joomlatutorials.com/faq/view/joomla_functionality_tips/how_to_create_a_joomla_demo_site/60.html

I have try many time to install this 2 script and by following step by step all explanation...but I continue to not undestand how it work. In fact I bloque my self especially at the point 6 and 7 where is juste write "Run autoSiteDUMP.sh and Setup a crontab". I never undestand where and how I must "run" this script....From where ? Using witch programm ? FTP ? Other ? I have test many things without success...If this script must be run in command line I dont know how I can do...I have no practice...

Can your script help me for do something ?? Any help much appreciate....Is very bad Is not possible to find a Joomla component ready to work for make a demo website...

Mirko