Environment variableAn environment variable is a user-definable value that can affect the way running processes will behave on a computer. Environment variables are part of the environment in which a process runs. For example, a running process can query the value of the TEMP environment variable to discover a suitable location to store temporary files, or the HOME or USERPROFILE variable to find the directory structure owned by the user running the process.
Windows Task SchedulerTask Scheduler (formerly Scheduled Tasks) is a job scheduler in Microsoft Windows that launches computer programs or scripts at pre-defined times or after specified time intervals. Microsoft introduced this component in the Microsoft Plus! for Windows 95 as System Agent. Its core component is an eponymous Windows service. The Windows Task Scheduler infrastructure is the basis for the Windows PowerShell scheduled jobs feature introduced with PowerShell v3.
Croncron is a time-based job scheduler. A scheduled job is known as a cron job. Although typically used to automate system maintenance and administration it can be used to automate any task. cron is most suitable for scheduling repetitive tasks, as scheduling a one-time task can be accomplished via at. The daemon name originates from Chronos, the Greek word for time. cron is generally available on Unix-likeoperating systems.Working directoryIn computing, the working directory is the directory of a file system to which a relative path is relative. In a command-line environment, a user often uses files in or relative to the working directory. The system state that identifies the working directory provides a convenient way to define the context of work. Users can use paths that are conceptually simpler and usually shorter, instead of always using absolute paths.
ReactOSFree incomplete Windows NT-like operating systemOperating systemReactOS 0.4.16 running the Firefoxweb browserReactOS is a free and open-sourceoperating system for i586/amd64personal computers that is intended to be binary-compatible with computer programs and device drivers developed for Windows Server 2003 and later versions of Microsoft Windows.
Unix-likeA Unix-likeoperating system (sometimes referred to as a UN*X,*nix or *NIX) 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.
Shell (computing)An operating systemshell is a computer program that provides relatively broad and direct access to the system on which it runs. The term shell refers to how it is a relatively thin layer around an operating system. Most shells are command-line interface (CLI) programs. Some shells also include graphical user interfaces (GUI).Command (computing)In computing, a command is a high-level instruction received via an external interface that directs the behavior of a computer program. Commonly, commands are sent to a program via a command-line interface, a script, a network protocol, or as an event triggered in a graphical user interface. Many commands support arguments to specify input and to modify default behavior. Terminology and syntax varies but there are notable common approaches.
System timeIn computing, system time represents a computer system's notion of a point in time. System time is measured by a system clock, which is typically implemented as a simple count of the number of ticks that have transpired since some arbitrary starting date, called the epoch.
UnixUnix ( , YOO-niks; trademarked as UNIX) is a family of multitasking, multi-user computer operating systems that derive from the original AT&T Unix, the development of which started in 1969 at the Bell Labs research center by Ken Thompson, Dennis Ritchie, and others.
Standard streamsIn computer programming, standard streams are preconnected input and output communication channels between a computer program and its environment when it begins execution. The three input/output (I/O) connections are called standard input (stdin), standard output (stdout) and standard error (stderr). Originally I/O happened via a physically connected system console (input via keyboard, output via monitor), but standard streams abstract this.
Microsoft WindowsComputer operating systemOperating systemWindows is a proprietaryoperating system developed by Microsoft. Windows is grouped into families that cater to particular sectors of the computing industry – Windows for personal computers, Windows Server for servers, and Windows IoT for embedded systems.*As an Amazon Associate I earn from qualifying purchases.