Linux is a ringer of the os Unix, spelt from scratch by Linus Torvalds with help from a roughly-knit team of hackers throughout the Net. It aims towards POSIX and Single UNIX spec compliance.

It has entire the characteristics you would anticipate in a modern amply-fledged Unix, added true multistory, virtual memory, shared libraries, demand loading, shared copy-on-write accomplished, right memory management, and TCP/IP networking.


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Linux is simple portable to most actual-function 32- or 64-bit architectures as long as they have a paged memory direction unit and a interface of the GNU C compiler.


Linux has also been ported to a number of architectures minus a PMMU, while functionality is then obviously somewhat limited. See the uClinux project for more detail.