The origins of Unix date back to the mid-1960s when the Massachusetts Institute of Technology, Bell Labs, and General Electric were developing Multics, a time-sharing operating system for the GE-645 mainframe computer. Multics featured several innovations, but also presented severe problems.Frustrated by the size and complexity of Multics, but not by its goals, individual …

A Unix-like (sometimes referred to as UN*X or *nix) operating system is one that behaves in a manner similar to a Unix system, although not necessarily conforming to or being certified to any version of the Single UNIX Specification.A Unix-like application is one that behaves like the corresponding Unix command or shell.There is no technical standard defining the term, and …

Unix (registrato ufficialmente come UNIX) è un sistema operativo portabile di tipo proprietario per computer inizialmente sviluppato da un gruppo di ricerca dei laboratori AT&T e Bell Laboratories, nel quale figurarono sulle prime anche Ken Thompson e Dennis Ritchie.Storicamente, è stato il sistema operativo maggiormente utilizzato su sistemi mainframe a partire dagli anni settanta

The Year 2038 problem (also known as Y2038, Y2K38, Y2K38 superbug, or the Epochalypse) is a time formatting bug in computer systems with representing times after 03:14:07 UTC on 19 January 2038.. The problem exists in systems which measure Unix time – the number of seconds elapsed since the Unix epoch (00:00:00 UTC on 1 January 1970) – and store it in a signed 32 …

The Unix philosophy, originated by Ken Thompson, is a set of cultural norms and philosophical approaches to minimalist, modular software development.It is based on the experience of leading developers of the Unix operating system.Early Unix developers were important in bringing the concepts of modularity and reusability into software engineering practice, spawning a "software …

less is a terminal pager program on Unix, Windows, and Unix-like systems used to view (but not change) the contents of a text file one screen at a time. It is similar to more, but has the extended capability of allowing both forward and backward navigation through the file.Unlike most Unix text editors/viewers, less does not need to read the entire file before starting, allowing for …

Bash is a Unix shell and command language written by Brian Fox for the GNU Project as a free software replacement for the Bourne shell. First released in 1989, it has been used as the default login shell for most Linux distributions. Bash was one of the first programs Linus Torvalds ported to Linux, alongside GCC. A version is also available for Windows 10 and Windows 11 via the …

Unix System V (pronounced: "System Five") is one of the first commercial versions of the Unix operating system.It was originally developed by AT&T and first released in 1983. Four major versions of System V were released, numbered 1, 2, 3, and 4. System V Release 4 (SVR4) was commercially the most successful version, being the result of an effort, marketed as Unix …

The versions leading to v7 are also sometimes called Ancient unix.After the release of Version 10, the Unix research team at Bell Labs turned its focus to Plan 9 from Bell Labs, a distinct operating system that was first released to the public in 1993.. AT&T UNIX Systems and descendants. Each of the systems in this list is evolved from the version before, with Unix System III evolving from ...

History. Version 1 Unix had separate system calls to catch interrupts, quits, and machine traps. Version 4 combined all traps into one call, signal, and each numbered trap received a symbolic name in Version 7. kill appeared in Version 2, and in Version 5 could send arbitrary signals. Plan 9 from Bell Labs replaced signals with notes, which permit sending short, arbitrary strings.