nginx index.html does not update after modification - nginx

Question

Sorry for noob question, I suck at Ubuntu.
I have just installed nginx in a Ubuntu server with:
sudo apt-get update
sudo apt-get -y install nginx
It successfully built. I'm trying to change the index page, so I have modified my /usr/share/nginx/html/index.html, and then tried all of these:
sudo service nginx stop
sudo service nginx start
sudo service nginx restart
But when I refresh the root page on my browser it still shows the old page.
This is what the index.html looks like:
I have checked my /etc/nginx/nginx.conf, but don't find anything particular there.
What could I be missing?

Answer 1

If you had checked vhost, you knowned, root directory is /var/www/html...
vhost is in /etc/nginx/sites-available and /etc/nginx/sites-enabled (sites-enabled is symlink).

Answer 2

The correct configuration file for NGINX on Debian is :
/var/www/html/index.nginx-debian.html
If you update this file, the changes will be reflected immediately, without a start/stop or restart.
sudo service nginx stop
sudo service nginx start
sudo service nginx restart

Answer 3

I have same problem before, then after updating nginx conf by moving 'root' from 'server/location' to 'server', it works well. Nginx config file :
server {
listen 443 ssl;
server_name localhost;
root /usr/share/nginx/html/rdist;
location /user/ {
proxy_pass http://localhost:9191;
}
location /api/ {
proxy_pass http://localhost:9191;
}
location /auth/ {
proxy_pass http://localhost:9191;
}
location / {
index index.html index.htm;
if (!-e $request_filename){
rewrite ^(.*)$ /index.html break;
}
}