I want to install on the same machine which is Ubuntu server, where I also have the cloud system but I used the command to change the port from the installation start and it installs but does not make the change. Is there a way to change it manually or with what command in this OS can I change it. Or I can use Ubuntu and install it from scratch but what is the correct command to tell it which port to listen on.
hey @infinityysteel 
Could you please clarify the situation a bit more?
What did you install and following which guide?
Unfortunately, I didn’t fully understand what you meant by the tags (FORMS?).
Thank you 
Use this link.
https://helpcenter.onlyoffice.com/es/installation/docs-community-install-ubuntu.aspx
My intention is that I want to change the port that onlyoffice uses to another… but I have not been able to do so.
My intention is just to change the port…
In that case, you can simply change the port in the Nginx configuration.
/etc/onlyoffice/documentserver/nginx/ds.conf
And execute the command:
service nginx reload
However, keep in mind that it will reset to the default port (80) during updates ONLYOFFICE Docs.
To change this behavior, you need to add a port to debconf:
To achieve this, you need to have the “debconf-utils” package installed:
sudo apt install debconf-utils
echo onlyoffice-documentserver onlyoffice/ds-port select <PORT_NUMBER> | sudo debconf-set-selections