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Full Discussion: How is OS X related to unix
Operating Systems Linux Fedora How is OS X related to unix Post 302311791 by Neo on Wednesday 29th of April 2009 02:13:32 PM
Old 04-29-2009
OS X is not Linux-based, it is UNIX/BSD based.

Reference: Darwin

Quote:
Darwin is an open source POSIX-compliant computer operating system released by Apple Inc. in 2000. It is composed of code developed by Apple, as well as code derived from NEXTSTEP, FreeBSD, and other free software projects.

Darwin forms the core set of components upon which Mac OS X and iPhone OS are based. It is compatible with the Single UNIX Specification version 3 (SUSv3) and POSIX UNIX applications and utilities.
 

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dspluginhelperd(8)					    BSD System Manager's Manual 					dspluginhelperd(8)

NAME
dspluginhelperd -- support daemon for legacy DirectoryService plugins SYNOPSIS
dspluginhelperd [-v] DESCRIPTION
DirectoryService has been replaced by opendirectoryd(8). dspluginhelperd provides support for 3rd party DirectoryService plugins. More information can be accessed from the Darwin Open Directory Page: http://developer.apple.com/darwin/projects/opendirectory/ OPTIONS
The options are as follows: -v Display the release version. DIAGNOSTICS
See odutil(1) for information on enabling debug logging and various other options introspection of opendirectoryd. ERRORS
Error codes are available using dserr(1) or from framework headers <DirectoryService/DirServiceTypes.h>. DirectoryService.framework is dep- recated as of 10.6 and OpenDirectory.framework should be used instead. OPEN SOURCE
The source code for dspluginhelperd is available as part of Apple's Darwin open source initiative. dspluginhelperd is part of the Directory- Service project. More information on Darwin may be found on the Web at http://developer.apple.com/darwin/projects/opendirectory/ DirectoryService API and Plug-in API are documented at http://developer.apple.com/referencelibrary/Networking/ The headers for the deprecated DirectoryService APIs can also be found in the following location: /System/Library/Frameworks/DirectoryService.framework/Headers/ FILES
/Library/DirectoryServices/PlugIns location of third party plugins SEE ALSO
opendirectoryd(8), odutil(1), DirectoryServiceAttributes(7), dscl(1), dsmemberutil(1), dscacheutil(1), dseditgroup(8), dsenableroot(8), dserr(8), pwpolicy(8) MacOSX Jun 23, 2010 MacOSX
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