controller codeigniter in ubuntu linux not run

[eluser]Basketcasesoftware[/eluser]
First question. Which version of CodeIgniter are you using? From the code sample it looks like you are using either 1.7.2 or 1.7.3, maybe 2.0 would fix it. If not, what is your directory structure where you have CodeIgniter. I use XAMPP myself so I don't how LAMP is configured, but I know I've seen postings here where the localhost address is followed by a port number. I don't know if lamp is one of those that requires that or not. Again, without more knowledge of your system setup it's difficult to formulate an adequate solution.