It used to be, at least on some systems, if you logged in with an upper case user name, the system assumed you only did upper case, and all future output would be in upper case. In this case, Unix is in lower case, because you told it you could handle it.
It used to be, at least on some systems, if you logged in with an upper case user name, the system assumed you only did upper case, and all future output would be in upper case. In this case, Unix is in lower case, because you told it you could handle it.