Is is possible to move the default site (/cgi-bin/luci/webpanel/homepage) to another port, lat say :81
Edit file /etc/config/uhttpd, 5th row
list listen_http 0.0.0.0:80
Then I want my webpages on the SD card on the "root" of webserver, not like now "192.168.1.100/sd/mypage.html", I want "192.168.1.100/mypage.html"
option home /www accordingly. Beware that your files will be the only one served by the webserver (ie: you'll lose access to the webpanel).
And last how do I install PHP on Yun? I'm not that good with linux.
Access the yun via ssh or via the YunSerialTerminal. Be sure it's properly configured to access the internet then type
opkg install php5-cgi
(or php4 if you prefer)
PS: once you're done with uhttpd configuration, don't forget to restart it: