ping webserver script

Ping webserver script script written in perl or standard linux program to do the following. 1) ping webserver port 80 for 20 domain name every 10 minute interval. I should have option to add more domain name in future. 2) if pinging port 80 fails, scripti should notify system administrator via email and via instant online messenger via yahoo or aim, if possible. 3) installation assistant require ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Installation package that will install the software (in ready-to-run condition) on the platform(s) specified in this bid request. 3) Complete ownership and distribution copyrights to all work purchased. ## Platform linux redhat