httpd with javascript or ajax


I am working with DiGi Wi-9C and linux

And I was wondering is it possible to open (and modify) Linux file from web page on builtin httpd server accesed from other network computer? Or I should use other (e.g. Cherokee)?

I’m not quite shure if it can be done with javascript or ajax. Maybe I should use PHP. I found following document:

which described how to implement PHP pages, but it didn’t work. When I try open test.php my browser shows “File Not found”, but I have test.php on DiGi bord.

Please help

Than you in advance!