He was only saying that because what you are asking is very general Linux skills. It is hard to tell you which files to delete when they might be files you want. We are here to help with OMV beginners but if we helped on every little Linux question, we wouldn't have time to help with OMV questions.
What solution did you find?
Hello,
I've find some guides on how to use the commands, from the ls to list the folders, to etc...
From this I've deleted some folders, that was it and nothing very complicated.
These links can be used:
https://mediatemple.net/commun…43550/common-ssh-commands
https://www.hostinger.com/tutorials/ssh/basic-ssh-commands
Thanks,
Matias