Linux vs. UNIX
Although many still consider UNIX the best option for high-demand applications, the technical differences between Linux and UNIX are "going to be pretty minimal" going forward, argued Gartner analyst George Weiss in a recent report.
Things going in favour of Linux were - better hardware features, internal multitasking and multiprocessing, less expensive resource requirements, stronger application independence and other such bullets.
Gabriel Consulting Group takes the same vein.
What it labels as a blinding glimpse of the obvious, GCG puts it forth in these words:
“The Linux operating system has had a huge impact on enterprise computing. It’s being used in closet-sized data centers and massive government research facilities alike – and most all of the IT shops in-between. Linux growth has come from new workloads, Microsoft Server replacements, and – of course – from the commercial UNIX installed base as well.”