Linked by David Adams on Thu 3rd Mar 2011 20:23 UTC, submitted by Amy Bennett
Hardware, Embedded Systems IDC's newest survey of server vendors shows boxes running every kind of operating system -- except Unix -- sold more during the last three months of 2010. Sales of Linux servers rose 29 percent; Windows rose 16.8 percent, but most surprisingly, sales of mainframes shot up 69 percent " the highest growth rate IDC ever found on mainframes.
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Linux isn't Unix, it is rather a written-from-scratch independent implementation of the POSIX specification which has not been certified as POSIX compliant because it is expensive to do so. Therefore Linux is just Linux. Consequently, unlike OSX (which was based on BSD code) and arguably perhaps iOS as well, Android cannot be counted as any kind of "Unix". Even if OSX and iOS machines were to be lumped in with the Unix figures, Android should be lumped in with the Linux figures.

Support for this:

Mac OSX comes from NextStep code which in turn comes from BSD code which in turn comes from Unix code.

GNU and GNU/Linux code spring up out of nowhere (no predecessor code for either of them). They were both written from scratch. GNU source code was originally written from scratch using editors on Unix systems, whereas Linux source code was written from scratch using the editor on a Minix system. Both are now supported on Linux systems.

Android derives from the Linux kernel code.

More information here:

Information about POSIX:

Note that even though Linux largely is POSIX compliant, Linux is not certified as POSIX compliant.

Edited 2011-03-04 06:01 UTC

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