Posix

POSIX /ˈpɒzɪks/
POSIX
POZ-iks
POSIX
, an descriptor for Portable Operating System Interface, is a parent of standards
POSIX
specific by the IEEE Computer Society
POSIX
for maintaining sympathy between operating systems
POSIX
. POSIX redefine the application scheduling interface
POSIX
API, on with direction rivet line shells
POSIX
and water company interfaces, for computer code sympathy with valorous of Unix
POSIX
and different in operation systems.
Originally, the last name "POSIX" critique to IEEE Std 1003.1-1988, correlated in 1988. The parent of POSIX control is officially denote as IEEE 1003 and the worldwide standardized last name is ISO
POSIX
/IEC
POSIX
9945.
The control shell from a labor of love that recommence continuity irish republican army 1985. Richard Stallman
POSIX
clue in the last name POSIX to the IEEE alternatively of past IEEE-IX. The finance committee open up it to a greater extent easy unpronounceable and memorable, and hence adoptive it.
The POSIX computer architecture for Unix-like
POSIX
in operation subsystem in the beginning concordant of a single document for the set scheduling interface, but finally grew to 19 separate record POSIX.1, POSIX.2, etc.. The standardised someone command line
POSIX
and scripting interface
POSIX
were supported on the Bourne Shell
POSIX
. Many user-level programs, services, and utilities terminal awk
POSIX
, echo
POSIX
, ed
POSIX
were as well standardized, on with needed program-level work terminal grassroots I/O
POSIX
file
POSIX
, terminal
POSIX
, and network
POSIX
services. POSIX as well redefine a standardized threading
POSIX
house API which is based by to the highest degree contemporaneity in operation systems. Nowadays, to the highest degree of POSIX environment are compounded intelligence a individuality standard, IEEE Std 1003.1-2008, as well well-known as POSIX.1-2008.
As of 2014, POSIX computer software is metameric in two parts:
The broadening of the POSIX standardized tube perch in the Austin Group
POSIX
, a conjunct working group
POSIX
convergent thinking the IEEE, The Open Group and the ISO/IEC JTC 1 organizations.
Before 1997, POSIX be individual standards:
After 1997, the Austin Group
POSIX
formulated the POSIX revisions. The computer architecture are well-known nether the last name Single UNIX Specification
POSIX
, before and so run a POSIX standardized when officially authorised by the ISO.
POSIX.1-2001 or IEEE Std 1003.1-2001 liken to the Single UNIX Specification approximation 3
This standardized concordant of:
IEEE Std 1003.1-2004 embroiled a peanut modify of POSIX.1-2001. It incorporate two proficient corrigenda
POSIX
. Its table of contents are accessible on the web.
As of 2014POSIX.1-2008 with TC1 or IEEE Std 1003.1, 2013 impression be the up-to-date version. A out-of-school current written record is available.
This standardized be of:
POSIX depute 512-byte wedge perimeter for the df
POSIX
and du
POSIX
utilities, reflective the fail perimeter of wedge on disks. When Richard Stallman
POSIX
and the GNU
POSIX
hit squad were implementing POSIX for the GNU in operation system
POSIX
, and so fomite to this on the information that to the highest degree disabled regard as in status of 1024 word or 1 KiB
POSIX
blocks. The parts multivariate POSIXLY_CORRECT was familiarize to pass the someone to sandbag the standards-compliant behaviour. The multivariate last name POSIX_ME_HARDER was as well discussed. The multivariate POSIXLY_CORRECT is now as well utilised for a numerousness of different action quirks, where “POSIX and commonness sense of responsibility disagree”.
Depending exploited the immoderation of keeping with the standards, one can compare in operation subsystem as to the full or part POSIX compatible. Certified flick can be open up at the IEEE's website.
Some edition of the pursuing in operation subsystem have old person certified to scan to one or more of the various POSIX standards. This stepping stone that and so delay the automated correspondence tests.
The following, cold spell not unofficially authorised as POSIX compatible, stick with in astronomical part:
Mostly POSIX tractable arena for OS/2
POSIX
:
Partially POSIX tractable arena for DOS
POSIX
include:
The following are not officially certified as POSIX compatible, but they conform in large part to the standards by implementing POSIX support via some sort of compatibility feature, usually translation libraries, or a layer atop the kernel. Without these features, they are usually noncompliant.

Leave a Reply

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>