I was using the SSH commands and cd into the cli folder. then ran sudo -u nobody php install.php
Installing and upgrading help
Problem with clilib.php File during Install
Assuming Linux ... what flavor?
What does 'which php' show?
I also see 'public_html' ... might be a VPS configured pretty much like 'shared' servers and OP has to figure out what's missing or where things are located ... like multiple versions of PHP and cli support for PHP.
'spirit of sharing', Ken