Macos is the UNIX? Post: 303040186

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Top Forums UNIX for Beginners Questions & Answers Macos is the UNIX? Post 303040186 by Corona688 on Thursday 24th of October 2019 02:59:32 PM

10-24-2019

Registered User

Quote:

Originally Posted by dodona

its true that MacOS is more "unix-like' than Linux because of UNIX certification. On the other hand totally unrelated Z/OS, BS2000 and other proprietary mainframe OS'ses also have posix certification. That's it and that's all either.

That's all it means.

Quote:

MacOS has nothing to do with the classic UNIX approach of free and open

The culture is not UNIX culture, it's BSD and GNU. The entire "classic UNIX approach of free and open" was anti-UNIX backlash! A little history is needed to understand why.

Until "recently", UNIX was a monolithic copyright and licensed software hoarded by AT&T.
Richard Stallman disliked the closed binary approach and began GNU to create a portable, compatible, open UNIX alternative.
BSD, in modern parlance, was an open, pre-AT&T "fork" of UNIX, in pure sourcecode form. "Binary source distribution" in short.
Linux was a madcap project out of nowhere which got so popular that GNU adopted it over their HURD kernel.

The modern meaning of UNIX has changed. It's now a paper standard and series of tests of describing the languages, API's, programs, and shells that must be available for an operating system to call itself UNIX. Certification is not free. The standards need upkeep paid for somehow.

So, open and closed systems can both be UNIX, the same way different brands of appliances use the same wall sockets. And the standard means that one UNIX system can run the same software as a completely different UNIX system, given source code and a little work.

Last edited by Corona688; 10-24-2019 at 04:06 PM..

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net::server::proto::unix

Net::Server::Proto::UNIX(3)				User Contributed Perl Documentation			       Net::Server::Proto::UNIX(3)

NAME

       Net::Server::Proto::UNIX - Net::Server UNIX protocol.

SYNOPSIS

       See Net::Server::Proto.

DESCRIPTION

       Protocol module for Net::Server.  This module implements the UNIX SOCK_STREAM socket type.  See Net::Server::Proto.

       Any sockets created during startup will be chown'ed to the user and group specified in the starup arguments.

PARAMETERS

       The following paramaters may be specified in addition to normal command line parameters for a Net::Server.  See Net::Server for more
       information on reading arguments.

       unix_type
	   Can be either SOCK_STREAM or SOCK_DGRAM (default is SOCK_STREAM).  This can also be passed on the port line (see Net::Server::Proto).

	   However, this method is deprecated.	If you want SOCK_STREAM - just use proto UNIX without any other arguments.  If you'd like
	   SOCK_DGRAM, use the new proto UNIXDGRAM.

METHODS

       NS_unix_path/NS_unix_type
	   In addition to the standard NS_ methods of Net::Server::Proto classes, the UNIX types also have legacy calls to NS_unix_path and
	   NS_unix_type.

	   Since version 2.000, NS_unix_path is simply an alias to NS_port.  NS_unix_type is now redundant with NS_proto.

	   These methods were missing between version 2.000 and 2.003 but have been returned as legacy bridges.

QUICK PARAMETER LIST

	 Key		   Value		    Default

	 # deprecated UNIX socket parameters
	 unix_type	   (SOCK_STREAM|SOCK_DGRAM) SOCK_STREAM
	 port		   "filename"		    undef

	 # more recent usage
	 port		   "filename / UNIX"
	 port		   "filename / UNIXDGRAM"

LICENCE

       Distributed under the same terms as Net::Server

perl v5.16.2							    2012-06-06					       Net::Server::Proto::UNIX(3)