For nginx, you need to change the configuration file

/usr/local/etc/nginx/nginx.conf

If your root wordpress is not the webroot but http://domain.com/wordpress/:

location /wordpress/ {
    try_files $uri $uri/ /wordpress/index.php?q=$uri$args;
}

On server

location / {
    try_files $uri $uri/ /index.php?q=$uri$args;
}