You should look at the following URL's in order to grasp a solid understanding
of Nginx configuration files in order to fully unleash the power of Nginx.
http://wiki.nginx.org/Pitfalls
http://wiki.nginx.org/QuickStart
http://wiki.nginx.org/Configuration
Generally, you will want to move this file somewhere, and start with a clean
file but keep this around for reference. Or just disable in sites-enabled.
Please see /usr/share/doc/nginx-doc/examples/ for more detailed examples.
Default server configuration
server {
listen 80 default_server;
listen [::]:80 default_server;

location /nginx_status {

Turn on nginx stats
stub_status on;

I do not need logs for stats
access_log off;
}

SSL configuration
listen 443 ssl default_server;
listen [::]:443 ssl default_server;
Note: You should disable gzip for SSL traffic.
See: https://bugs.debian.org/773332
Read up on ssl_ciphers to ensure a secure configuration.
See: https://bugs.debian.org/765782
Self signed certs generated by the ssl-cert package
Don't use them in a production server!
include snippets/snakeoil.conf;
root /usr/share/ngnix/www;

Add index.php to the list if you are using PHP
index index.html index.htm index.nginx-debian.html;

server_name _;

location / {

First attempt to serve request as file, then
as directory, then fall back to displaying a 404.
try_files $uri $uri/ =404;
}

pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
location ~ .php$ {
try_files $uri =404;
fastcgi_split_path_info ^(.+.php)(/.+)$;
fastcgi_pass unix:/var/run/php-fpm.sock;
fastcgi_index index.php;
include fastcgi_params;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
}

deny access to .htaccess files, if Apache's document root
concurs with nginx's one
#location ~ /.ht {

deny all;
#}
}

Virtual Host configuration for example.com
You can move that to a different file under sites-available/ and symlink that
to sites-enabled/ to enable it.
#server {

listen 80;
listen [::]:80;
server_name example.com;
root /var/www/example.com;
index index.html;
location / {
try_files $uri $uri/ =404;
server {

Listen on port 81
listen 81;

Server name being used (exact name, wildcards or regular expression)
server_name {censored};

root /usr/share/phpmyadmin;

Logging
error_log /var/log/phpmyadmin.access_log;
access_log /var/log/phpmyadmin.error_log;

location / {
index index.php;
}

Pass the PHP scripts to FastCGI server
location ~ .php$ {

fastcgi_pass unix:/var/run/php5-fpm.sock;
fastcgi_split_path_info ^(.+.php)(/.*)$;
include fastcgi_params;
fastcgi_param SCRIPT_FILENAME /usr/share/phpmyadmin$fastcgi_script_name;
fastcgi_param HTTPS off;
}
}