It is a server command. How I stumbled upon it was going into my phpMyAdmin console and doing “check permissions” on the wordpress database (I can’t remember exactly how to nav there, I’ll update you on that later). That function spit out an error that led me realizing that the permissions on my DBs were F’d up.
I’m not sure that’s the response you were looking for, but maybe it gives you some hints.
I’m not using traditional hosting, so YMMV.
