I recently bought a vps and I have am fairly new to using ubuntu on it since I have always used shared hosting.
I have created a sudoer user and it worked perfectly fine yesterday except when I edited the
ssh/ssh_config file to disable password authentication, it did not work, and I decided to work on it tomorrow.
I stopped my server, and when I booted it up today, and tried the command
sudo visudo /etc/ssh/ssh_config it would just put display
usage: visudo [-chqsV] [-f sudoers] [-x file]
rather than opening up the file.
I know it is something wrong about my usage but I can't seem to figure it out, I did the same exact command yesterday and it worked perfectly fine.