August 12, 2010

CentOS: Community ENTerprise Operating System.

CentOS: Community ENTerprise Operating System.
CentOS is a community-supported, free and open source operating system based on Red Hat Enterprise Linux. It exists to provide a free enterprise class computing platform and strives to maintain 100% binary compatibility with its upstream distribution. CentOS stands for Community ENTerprise Operating System.

Red Hat Enterprise Linux is available only through a paid subscription service that provides access to software updates and varying levels of technical support. The product is largely composed of software packages distributed under open source licenses, and the source code for those packages is made public by Red Hat.

CentOS developers use Red Hat's source code to create a final product very similar to Red Hat Enterprise Linux. Red Hat's branding and logos are changed because Red Hat does not allow them to be redistributed.

CentOS is available free of charge. Technical support is primarily provided by the community via official mailing lists, web forums, and chat rooms. The project is not affiliated with Red Hat and thus receives no financial or logistical support from the company; instead, the CentOS Project relies on donations from users and organizational sponsors.


CentOS supports the x86 architectures:
The following architectures were supported by CentOS up to version 4:

  • IA-64 (Intel Itanium architecture, 64-bit) (beta support since CentOS 3)

  • PowerPC/32 (Apple Macintosh and PowerMac running the G3 or G4 PowerPC processor) (beta support since CentOS 3)

  • IBM Mainframe (eServer zSeries and S/390) (not CentOS 5)
The following two architectures were supported or partially supported in CentOS but are not supported upstream:

  • Alpha (CentOS 4 only)

  • SPARC (beta support since CentOS 3)

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