Bob Martin wrote: > I think the OP means "major PC operating systems". Those with a wider > knowledge of the computer world would consider IBM's mainframe operating > systems to be deserving of the description "major".
Maybe you are right, if you mean big machines. I know mainframes a bit and there are interesting concepts, like hot-swapping of CPU modules and mainframes are very reliable. But expensive, too. I know at least one client, who wants to change it to some cheap Linux boxes, like Google demonstrates it. If you take care (e.g. Xen virtualization for easier computer changing and RAID harddisks, if a downtime of some hours might be ok), it doesn't matter if one PC goes out of order. But even on IBM mainframes you can install Linux or other Unix systems in parallel to the usual operating systems for this machines, so except for special cases, like embedded systems, the most installed and used operating systems might be Unix-like systems and Windows. But looks like Python even runs on more native operating systems for mainframes. -- Frank Buss, f...@frank-buss.de http://www.frank-buss.de, http://www.it4-systems.de -- http://mail.python.org/mailman/listinfo/python-list
