unix - What is the meaning of "POSIX"? - Stack Overflow
Nov 23, 2009 · POSIX, on the other hand, stands for "Portable Operating System Interface" POSIX is a set of standards that define the interface between an operating system and …
What exactly is POSIX? - Unix & Linux Stack Exchange
The Open Group is most famous as the certifying body for the UNIX trademark, and its publication of the Single UNIX Specification technical standard, which extends the POSIX standards and …
Difference between POSIX, Single UNIX Specification, and Open …
What are the differences between POSIX, the Single UNIX Specification, and the Open Group Base Specifications? I think their purpose is for determining if an OS is Unix?
What is POSIX? Which standards they are? - Stack Overflow
Jan 24, 2014 · To understand POSIX you have to understand UNIX. UNIX was an operating system created in the 1970s and was unique in that many different companies and institutions …
linux - Is Mac OS X a POSIX OS? - Stack Overflow
Apr 26, 2011 · POSIX is a group of standards that determine a portable API for Unix-like operating systems. Mac OS X is Unix-based (and has been certified as such), and in …
Where can I find official POSIX and UNIX documentation?
Sorry but Posix.1 will not give you a better understanding of how Unix systems work at a low level. The standard only covers a small "portable' subset of the commands and APIs on a Unix …
How do executables use POSIX to keep compatibility between
Mar 7, 2024 · In my understanding, POSIX only specifies a set of APIs that the OS needs to provide, but it doesn’t specify the implementation detail, specifically the assembly level …
What makes a shell "POSIX compliant"? - Stack Overflow
May 25, 2021 · So what would a shell need to be "SH compliant" or "POSIX-like compliant shell"? Aside from reading commands to be executed and storing a few variables, there is not a whole …
Newest 'posix' Questions - Stack Overflow
Dec 8, 2025 · POSIX.1-2017 specifies two line-oriented file editing utilities: ed(1) and ex(1). ex is more efficient for noninteractive batch-editing because POSIX requires it to accept one or …
What is the correct POSIX-style TZ format: <+04>-4 vs UNK-4
Jan 21, 2022 · For "UNK-4", the "UNK" is the time zone abbreviation (designation in Posix-speak) and -4 is the offset and means 4h east of the prime meridian. Note that the sign of the offset is …