Various Unix-based operating systems originally from The SCO Group. SCO Unix may refer to SCO UnixWare, SCO XENIX, SCO Open Desktop and SCO OpenServer. See SCO XENIX, OpenServer and UnixWare.
"SCO Unix." YourDictionary, n.d. Web. 17 August 2018. <http://www.yourdictionary.com/sco-unix>.
SCO Unix. (n.d.). Retrieved August 17th, 2018, from http://www.yourdictionary.com/sco-unix