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Check the Operating System Version: In the System Information window, look for the "System Summary" on the left sidebar. Under "System Summary," look for "OS Name" and "Version."
In computing, ver (short for version) is a command in various command-line interpreters such as COMMAND.COM, cmd.exe and 4DOS/4NT.It prints the name and version of the operating system, the command shell, or in some implementations the version of other commands.
HelenOS – research and experimental operating system; House – Haskell User's Operating System and Environment, research OS written in Haskell and C; ILIOS – Research OS designed for routing; L4 – second generation microkernel; Mach – from OS kernel research at Carnegie Mellon University; see NeXTSTEP
The operating system provides an interface between an application program and the computer hardware, so that an application program can interact with the hardware only by obeying rules and procedures programmed into the operating system. The operating system is also a set of services which simplify development and execution of application programs.
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This is an accepted version of this page This is the latest accepted revision, reviewed on 8 January 2025. There is 1 pending revision awaiting review. Family of Unix-like operating systems This article is about the family of operating systems. For the kernel, see Linux kernel. For other uses, see Linux (disambiguation). Operating system Linux Tux the penguin, the mascot of Linux Developer ...
A special system-wide environment variable found on Windows NT and its derivatives. Its value is the location of the current user's profile directory, in which is found that user's HKCU registry hive (NTUSER). Users can also use the %USERNAME% variable to determine the active users login identification.
In contemporary operating systems unprivileged applications cannot alter the nucleus. License and pricing policies also vary among different systems. The tables below use the following terms: BSD BSD licenses are a family of permissive free software licenses, imposing minimal restrictions on the use and distribution of covered software. bundled