Computing is usually defined as the activity of using and improving computer hardware and software. It is the computer-specific part of information technology...
In computing, a command is a directive to a computer program acting as an interpreter of some kind, in order to perform a specific task. Most commonly a command is a directive to some kind of command line interface, such as a shell....
that are used to display and set the current time and date
Calendar date
A date in a calendar is a reference to a particular day represented within a calendar system. The calendar date allows the specific day to be identified. The number of days between two dates may be calculated. For example, "24 " is ten days after "14 " in the Gregorian calendar. The date of a...
An operating system is a set of programs that manage computer hardware resources and provide common services for application software. The operating system is the most important type of system software in a computer system...
DOS, short for "Disk Operating System", is an acronym for several closely related operating systems that dominated the IBM PC compatible market between 1981 and 1995, or until about 2000 if one includes the partially DOS-based Microsoft Windows versions 95, 98, and Millennium Edition.Related...
OS/2 is a computer operating system, initially created by Microsoft and IBM, then later developed by IBM exclusively. The name stands for "Operating System/2," because it was introduced as part of the same generation change release as IBM's "Personal System/2 " line of second-generation personal...
Microsoft Windows is a series of operating systems produced by Microsoft.Microsoft introduced an operating environment named Windows on November 20, 1985 as an add-on to MS-DOS in response to the growing interest in graphical user interfaces . Microsoft Windows came to dominate the world's personal...
A shell is a piece of software that provides an interface for users of an operating system which provides access to the services of a kernel. However, the term is also applied very loosely to applications and may include any software that is "built around" a particular component, such as web...
COMMAND.COM is the filename of the default operating system shell for DOS operating systems and the default command line interpreter on Windows 95, Windows 98 and Windows Me...
4DOS is a command line interpreter by JP Software, designed to replace the default command interpreter COMMAND.COM in DOS and Windows 95/98/Me. The 4DOS family of programs are meant to replace the default command processor. 4OS2 and 4NT replace CMD.EXE in OS/2 and Windows NT respectively...
Take Command Console , formerly known as 4DOS for Windows NT and 4NT, is a command line interpreter by JP Software, designed as a substitute for the default command interpreter in Microsoft Windows...
Unix is a multitasking, multi-user computer operating system originally developed in 1969 by a group of AT&T employees at Bell Labs, including Ken Thompson, Dennis Ritchie, Brian Kernighan, Douglas McIlroy, and Joe Ossanna...
The Unix date command displays the time and date. The super-user can use it to set the system clock.- Usage :With no options, the date command displays the current date and time, including the abbreviated day name, abbreviated month name, day of the month, the time separated by colons, the timezone...
displays both the time and date, but does not allow the normal users to change either. Users with superuser
Superuser
On many computer operating systems, the superuser is a special user account used for system administration. Depending on the operating system, the actual name of this account might be: root, administrator or supervisor....
privileges may use date -s to change the time and date. The Unix command time
Time (Unix)
time is a command in the Unix operating systems. It is used to determine the duration of execution of a particular command.-Usage:To use the command, simply precede any command by the word time, such as:time ls...
Windows PowerShell is Microsoft's task automation framework, consisting of a command-line shell and associated scripting language built on top of, and integrated with the .NET Framework...
, date is a short form for the Get-Date Cmdlet which returns the current system time object. The Set verb of the Cmdlet is used to set both date and time.
Microsoft Windows (cmd.exe)
time [/t] [/time] [hours:[minutes[:seconds[.hundredths]]][{A|P}]]
date [/T | date]
Note: When these commands are called from the command line or a batch script, they will display the time or date and wait for the user to type a new time or date and press RETURN. The parameter '/t' will bypass asking the user to reset the time or date.
The format of the date parameter is dependent upon regional settings.
4DOS/4NT
TIME [/T] [hh[:mm[:ss]]] [AM | PM]
hh: The hour (0 - 23).
mm: The minute (0 - 59).
ss: The second (0 - 59), set to 0 if omitted.
/T: (display only)
DATE [/T] [mm-dd-yy]
/T: (Display only)
mm: The month (1 - 12).
dd: The day (1 - 31).
yy: The year (00 - 99, or a 4-digit year).
