...system?

The requirements are undoubtedly somewhat differentfor the various UNIX implementations. The UNIX thatI prefer is Solaris, and it's requirements are listedat reference #1.A summary of those requirements are:* 256 MB of physical RAM* Minimum of 2 GB of available hard drive space* For x64- or x86-based processors, 120-MHz minimum* DVD or CD-ROM driveI suspect that Linux might require fewerhardware resources than Solaris, but by nowit's difficult to *find* a system with less than256MB or ram, 2GB of disk and at least 120MHz CPU.In any case, if you peruse the web sites for variousLinux distributions, you'll likely find their minimumconfigurations.

www.sun.com

The requirements for Unixshould be very similar tothe requirements for Windowsor any other OS. Themain limitation you'll findis that you might have troublefinding some hardware driversfor particular Unix versions.Check the web site of thespecific Unix you'reinterested in.