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Encyclopedia > Task Scheduler

Task Scheduler is a component of Microsoft Windows that allows users to schedule launch of programs or scripts at pre-defined times or after specified time intervals. It was introduced first in the Windows 95 Plus! pack as System Agent [1] but was renamed to Task Scheduler in Windows 98. Windows redirects here. ... Scheduling is the process of assigning tasks to a set of resources. ... RAM (Random Access Memory) Look up computing in Wiktionary, the free dictionary. ... Scheduling is a key concept in computer multitasking and multiprocessing operating system design, and in real-time operating system design. ... Windows redirects here. ... Windows 95 is a consumer-oriented graphical user interface-based operating system. ... Microsoft Plus! was an operating system enhancement package provided by Microsoft. ... Windows 98 (codenamed Memphis) is a graphical operating system released on June 25, 1998 by Microsoft and the successor to Windows 95. ...

Contents

Versions

Task Scheduler 1.0

Task Scheduler 1.0 is included with Windows 2000, Windows XP and Windows Server 2003.[2] It runs as a Windows Service, and the task definitions and schedules are stored in binary .job files. Tasks are manipulated directly by manipulating the .job files. Each task corresponds to single action. Windows 2000 (also referred to as Win2K) is a preemptive, interruptible, graphical and business-oriented operating system that was designed to work with either uniprocessor or symmetric multi-processor 32-bit Intel x86 computers. ... Windows XP is a line of operating systems developed by Microsoft for use on general-purpose computer systems, including home and business desktops, notebook computers, and media centers. ... Windows Server 2003 is a server operating system produced by Microsoft. ... A Windows service is an application that starts when the Microsoft Windows operating system is booted and runs in the background as long as Windows is running. ... Look up binary in Wiktionary, the free dictionary. ...


Task Scheduler 2.0

Task Scheduler 2.0 in Windows Vista
Task Scheduler 2.0 in Windows Vista

Task Scheduler 2.0 was introduced with Windows Vista and included in Windows Server 2008 as well.[2] The redesigned Task Scheduler is now based on Management Console. In addition to running tasks on scheduled times or specified intervals, Task Scheduler 2.0 also supports calendar and event-based triggers, such as starting a task when a particular event is logged to the event log, or when a combination of events has occurred. Also, several tasks that are triggered by the same event can be configured to run either simultaneously or in a pre-determined chained sequence of a series of actions, instead of having to create multiple scheduled tasks. Tasks can also be configured to run based on system status such as being idle for a pre-configured amount of time, on startup, logoff, or only during or for a specified time. XPath expressions can be used to filter events from the Windows Event Log. Tasks can also be delayed for a specified time after the triggering event has occurred, or repeat until some other event occurs. Actions that need to be done if a task fails can also be configured. The actions that can be taken in response to triggers, both event-based as well as time-based, not only include launching applications but also take a number of custom actions. Task Scheduler includes a number of actions built-in, spanning a number of applications; including send an e-mail, show a message box, or fire a COM handler when it is triggered. Custom actions can also be specified using the Task Scheduler API. Task Scheduler keeps a history log of all execution details of all the tasks. [3]. Windows Vista uses Task Scheduler 2.0 to run various system-level tasks, as such, the Task Scheduler service cannot be disabled any more. Image File history File links Windows_Vista_Task_Scheduler. ... Image File history File links Windows_Vista_Task_Scheduler. ... Windows Vista is a line of graphical operating systems used on personal computers, including home and business desktops, notebook computers, Tablet PCs, and media centers. ... Windows Vista is a line of graphical operating systems used on personal computers, including home and business desktops, notebook computers, Tablet PCs, and media centers. ... Windows Server 2008 is the name of the next server operating system from Microsoft. ... MMC on Windows Server 2003, running Computer Management snap-in The Microsoft Management Console (MMC) is a component of modern Microsoft Windows operating systems that provides system administrators and advanced users with a flexible interface through which they may configure and monitor the system. ... XPath (XML Path Language) is an expression language for addressing portions of an XML document, or for computing values (strings, numbers, or boolean values) based on the content of an XML document. ... Event Viewer in Windows XP. Event Viewer in Windows Vista. ... Component Object Model (COM) is a platform for software componentry introduced by Microsoft in 1993. ...


Unlike Task Scheduler 1.0, Task Scheduler 2.0 exposes an API to programmatically create tasks. It is accessed via the ITaskService COM interface.[4] The Windows API does not, however, include a managed wrapper for Task Scheduler. The Task Scheduler API is also exposed for scripting languages, including VBScript, JScript and Windows PowerShell.[5] The job files for Task Scheduler 2.0 are XML-based, and are human-readable, conforming to the Task Scheduler Schema.[4] While it is possible to create the job files by hand, Microsoft advises not to do so, but use the Task Scheduler API. A command line utility for using Task Scheduler is also provided in terms of the schtasks.exe utility.[6] API may refer to: In computing, application programming interface In petroleum industry, American Petroleum Institute In education, Academic Performance Index This page concerning a three-letter acronym or abbreviation is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title. ... Component Object Model (COM) is a platform for software componentry introduced by Microsoft in 1993. ... An interface is a specification that exists between software components that specifies a selected means of interaction, by means of properties of other software modules, which abstract and encapsulate their data. ... In Microsoft Windows terminology, managed code is computer instructions — that is, code — executed by a CLI-compliant virtual machine, such as Microsofts . ... VBScript (short for Visual Basic Scripting Edition) is an Active Scripting language developed by Microsoft. ... JScript is the Microsoft implementation of the ECMAScript scripting programming language specification. ... Windows PowerShell, previously Microsoft Shell or MSH (codenamed Monad) is an extensible command line interface (CLI) shell and scripting language product developed by Microsoft. ... The Extensible Markup Language (XML) is a general-purpose markup language. ...


Other features

  • New security features, including using Credential Manager to store passwords for tasks on workgroup computers and using Active Directory for task credentials on domain-joined computers so that they cannot be retrieved easily. Also, scheduled tasks are executed in their own session, instead of the same session as system services or the current user.
  • Ability to wake up a machine remotely or using BIOS timer from sleep or hibernation to execute a scheduled task or run a previously scheduled task after a machine gets turned on.
  • Ability to attach tasks to events directly from the Event Viewer.

Typically Active Directory is managed using the graphical Microsoft Management Console. ... For other uses, see Bios. ... Event Viewer in Windows XP. Event Viewer in Windows Vista. ...

Tasks

The Task Scheduler service works by managing Tasks; Task refers to the action (or actions) taken in response to trigger(s). A task is defined by associating a set of actions, which can include launching an application or taking some custom-defined action, to a set of triggers, which can either be time-based or event-based. In addition, a task also can contain metadata that defines how the actions will be executed, such as the security context the task will run in. Tasks are serialized to .job files and are stored in the special folder titled Task Folder, organized in subdirectories. Programmatically, the task folder is accessed using the ITaskFolder interface or the TaskFolder scripting object and individual tasks using the IRegisteredTask interface or RegisteredTask object.[7] On Microsoft Windows operating systems, Special Folders are folders which are presented to the user through an interface as an abstract concept, instead of an absolute folder path. ...


See also

at (at. ... The at command is used to schedule commands to be executed once at a particular time in the future. ...

References

  1. ^ Al Fasoltd. Windows 98: Stable and fast, as well as 'new and improved'. The Syracuse Newspapers. Retrieved on 2007-10-06.
  2. ^ a b About the Task Scheduler. Retrieved on 2007-10-06.
  3. ^ Windows Vista Task Scheduler. Microsoft TechNet (March 3, 2006). Retrieved on 2006-04-24.
  4. ^ a b Kenny Kerr. Task Scheduler 2.0. MSDN. Retrieved on 2007-10-06.
  5. ^ Task Scheduler Reference. Retrieved on 2007-10-06.
  6. ^ Schtasks.exe (Windows). Retrieved on 2007-10-06.
  7. ^ Tasks (Windows). MSDN. Retrieved on 2007-10-06.

Year 2007 (MMVII) is the current year, a common year starting on Monday of the Gregorian calendar and the AD/CE era in the. ... is the 279th day of the year (280th in leap years) in the Gregorian calendar. ... Year 2007 (MMVII) is the current year, a common year starting on Monday of the Gregorian calendar and the AD/CE era in the. ... is the 279th day of the year (280th in leap years) in the Gregorian calendar. ... is the 62nd day of the year (63rd in leap years) in the Gregorian calendar. ... Year 2006 (MMVI) was a common year starting on Sunday of the Gregorian calendar. ... Year 2006 (MMVI) was a common year starting on Sunday of the Gregorian calendar. ... is the 114th day of the year (115th in leap years) in the Gregorian calendar. ... The Microsoft Developer Network (MSDN) is an information service from Microsoft for software developers. ... Year 2007 (MMVII) is the current year, a common year starting on Monday of the Gregorian calendar and the AD/CE era in the. ... is the 279th day of the year (280th in leap years) in the Gregorian calendar. ... Year 2007 (MMVII) is the current year, a common year starting on Monday of the Gregorian calendar and the AD/CE era in the. ... is the 279th day of the year (280th in leap years) in the Gregorian calendar. ... Year 2007 (MMVII) is the current year, a common year starting on Monday of the Gregorian calendar and the AD/CE era in the. ... is the 279th day of the year (280th in leap years) in the Gregorian calendar. ... The Microsoft Developer Network (MSDN) is an information service from Microsoft for software developers. ... Year 2007 (MMVII) is the current year, a common year starting on Monday of the Gregorian calendar and the AD/CE era in the. ... is the 279th day of the year (280th in leap years) in the Gregorian calendar. ...

External links

  • Task Scheduler

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