Dr. Mark Humphrys

School of Computing. Dublin City University.

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My big idea: Ancient Brain

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Mainframe / Server operating systems (multi-user)

Split between UNIX/Linux and Microsoft. Been that way for a long time.




Usage share of server operating systems for web servers only (not all servers/mainframes), 2015.
"Unix" family includes Linux.
From w3techs.com.




Server operating systems




Supercomputers



ancientbrain.com      w2mind.org      humphrysfamilytree.com

On the Internet since 1987.

Wikipedia: Sometimes I link to Wikipedia. I have written something In defence of Wikipedia. It is often a useful starting point but you cannot trust it. Linking to it is like linking to a Google search. A starting point, not a destination. I automatically highlight in red all links to Wikipedia and Google search and other possibly-unreliable user-generated content.