The Portable Operating System Interface (POSIX; IPA: /ˈpɒz.ɪks/) is a family of standards specified by the IEEE Computer Society for maintaining compatibility...

writing regular expressions have existed since the 1980s, one being the POSIX standard and another, widely used, being the Perl syntax. Regular expressions...

in POSIX.1-1988 and later POSIX.1-2001, and became a format supported by most modern file archiving systems. The tar command was abandoned in POSIX.1-2001...

the next day). For example, this is what happened on strictly conforming POSIX.1 systems at the end of 1998: Unix time numbers are repeated in the second...

In computing, POSIX Threads, commonly known as pthreads, is an execution model that exists independently from a programming language, as well as a parallel...

The C POSIX library is a specification of a C standard library for POSIX systems. It was developed at the same time as the ANSI C standard. Some effort...

from the POSIX chair Andrew Josey for the symbolic price of one dollar.[citation needed] There have been some activities to make Linux POSIX-compliant...

permissions. POSIX 1003.1e/1003.2c working group made an effort to standardize ACLs, resulting in what is now known as "POSIX.1e ACL" or simply "POSIX ACL"....

cultural elements) is an ISO/IEC standard for the registration of new POSIX locales and POSIX charmaps. This standard is the result of a "fast-track" adoption...

Microsoft POSIX subsystem is one of four subsystems shipped with the first versions of Windows NT, the other three being the Win32 subsystem which provided...

since bash 4.2, also if invoked explicitly in POSIX compatibility mode (with options --posix or -o posix). Only in sh/ksh compatibility mode (when invoked...

inter-process communication (IPC), typically used in Unix, Unix-like, and other POSIX-compliant operating systems. A signal is an asynchronous notification sent...

they were sent The Unix domain socket facility is a standard component of POSIX operating systems. The API for Unix domain sockets is similar to that of...

modification from a de facto standard into a component of the POSIX specification. The term POSIX sockets is essentially synonymous with Berkeley sockets,...

"target") by specifying a path thereto. Symbolic links are supported by POSIX and by most Unix-like operating systems, such as FreeBSD, Linux, and macOS...

In modern POSIX compliant operating systems, a program that needs to access data from a file stored in a file system uses the read system call. The file...

||= << >> <<= >>= ?: are not available in POSIX bc. The sqrt() function for calculating square roots is POSIX bc's only built-in mathematical function...

to as permission-driven. Two types of permissions are widely available: POSIX file system permissions and access-control lists (ACLs) which are capable...

besides a "minimal locale" name "C", although the POSIX format is a commonly-used baseline. On POSIX platforms such as Unix, Linux and others, locale identifiers...

The Native POSIX Thread Library (NPTL) is an implementation of the POSIX Threads specification for the Linux operating system. Before the 2.6 version...

Invoking Bash with the --posix option or stating set -o posix in a script causes Bash to conform very closely to the POSIX 1003.2 standard. Bash shell...

meta information to an ASCII-based representation. cpio was removed from POSIX.1-2001 in favor of pax, a similar utility which had been introduced in the...

This is a list of POSIX (Portable Operating System Interface) commands as specified by IEEE Std 1003.1-2024, which is part of the Single UNIX Specification...

On POSIX-compliant platforms, SIGHUP ("signal hang up") is a signal sent to a process when its controlling terminal is closed. It was originally designed...

The POSIX terminal interface is the generalized abstraction, comprising both an application programming interface for programs, and a set of behavioural...

installed by an ordinary user. A similar problem exists for the POSIX shell, since POSIX only required its name to be sh, but did not mandate a path. A...

addressing EROS: a fast capability system POSIX "capabilities" in Linux: POSIX Capabilities & Files POSIX file capabilities: Parceling the power of root...

a digital copy of the POSIX standards documentation with a request to the comp.os.minix newsgroup. After not finding the POSIX documentation, Torvalds...

original ANSI C standard, it was developed at the same time as the C library POSIX specification, which is a superset of it. Since ANSI C was adopted by the...

defined in POSIX in a way which is reasonably compatible, robust and performant, and to provide additional useful features not defined in POSIX, just as...