user-obsequious = U = UTSL

USG Unix /U-S-G yoo'niks/ n.

Refers to AT&T Unix commercial versions after Version 7, especially System III and System V releases 1, 2, and 3. So called because during most of the life­span of those versions AT&T's support crew was called the `Unix Support Group'. See BSD, Unix.

user-obsequious = U = UTSL