What is Plan 9 from Bell Labs?
{{Infobox OS | name = Plan 9 from Bell Labs | logo = | screenshot = <!-- [[Image:Plan9bunnysmblack.jpg|Glenda, the Plan 9 Bunny]] --> | caption = <!-- [[Glenda, the Plan 9 Bunny]] --> | developer = [[Bell Labs]] | source_model = [[Open source]] | kernel_type = [[Hybrid kernel|Hybrid]] | supported_platforms = [[x86 architecture|x86]], [[MIPS architecture|MIPS]], [[DEC Alpha]], [[SPARC]], [[PowerPC]], [[ARM architecture|ARM]] | ui = [[Rio (program)|rio]] / [[rc]] | family = Unix successor | released = 1992 (universities)<br />1995 (general public) | latest_release_version = Fourth Edition | latest_release_date = daily snapshots | latest_test_version = | latest_test_date = | marketing_target = | programmed_in = Dialect of [[International Organization for Standardization|ISO]]/[[American National Standards Institute|ANSI]] [[C (programming language)|C]] | prog_language = | language = | updatemodel = | package_manager = | working_state = Current | license = [[Lucent Public License]] or [[GNU General Public License]] | website = [http://plan9.bell-labs.com/plan9 Plan 9 from Bell Labs] }} '''Plan 9 from Bell Labs''' is a [[free software]] distributed [[operating system]]. It was made for research purposes as the successor to [[UNIX]] by the Computing Sciences Research Center at [[Bell Labs]] during the late 1980s. Plan 9 is currently used as a hobbyist's operating system, and in certain experimental fields, where the highly distributed nature of the operating system is valued. Plan 9 has novel features such as the 9P protocol for accessing local and remote resources as files, union mounts, an improved proc file system, and native unicode support throughout the system. In Plan 9, all system interfaces, including those required for networking and the user interf