How to customize the web GUI?

[sureshsmart18]

i downloaded the source file from github and want to modify the pfsense-master/src/usr/local/www/index.php.
but it show me access denied.
what,s the pproblem.i am using ubuntu system.

[johnpoz]

PEBKAC.. pure and simple..

So you don't know how to set permissions on files in your OS of choice?

chmod 777 index.php