One can always tell people who post comments about products they have no clue about.
Novell did "Linux-ify" their platform. It started with NetWare v5.0 back in 2000. OES on Linux was released in 2005. Where have you been for the past 5 years, by Zombie Ryushu?
NetWare v5.0 had a CLIB, Java VM and JVM-based XWindows GUI. It also supported CIFS. By NetWare v6.0, in 2003, they'd added a BASH shell, RPMs, ZLib and a lot more Linux components.
NetWare v3.x had been completely EOLed by 1999, and NetWare v4.x by 2003. Both were tied to IPX - it'd be insane to suggest it would have been worth the time and development effort to re-engineer them with Native IP (NCP over TCP/IP, which was introduced in NetWare v5.x) and the other *NIX-originated features they added to NetWare v5.x and v6.x.
As another poster has pointed out, OES ported the File and Print services traditionally associated with NetWare to a Linux platform. It's been out for years.