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NT Batch files:

Examples using DATE and TIME

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Batch file examples
💾	❔	Name	Description	Remarks
💾	❔	AtFuture.bat	Schedule a command a few minutes from now in the near future	This batch file was a coproduction with Rob Fuller.
💾	❔	DateAdd.bat	Add/subtract a specified number of days to/from a specified date	Use REGEDIT. Based on Fliegel-Van Flandern Julian date conversion algorithms from the Astronomical Almanac, provided by Doctor Fenton on the Math Forum and converted to batch code by Ron Bakowski.
💾	❔	DateDiff.bat	Calculate the difference in days between two dates
💾	❔	DateFmt.bat	Show the current date in the specified format	Inspired by Simon Sheppard's GetDate.bat.
💾	❔	DatePart.cmd	Return the specified part of the current date	Uses WMIC.
💾	❔	DateTime.cmd	Return the current date as errorlevel in YYYYMMDD format	Written by Justin. Tested only in Windows XP. Requires modifications to work on non-English systems.
💾	❔	Easter.bat	Calculate dates for Easter Day, Ascension Day and Pentecost for any year	Uses REGEDIT. Easter Day algorithm found at Simon Kershaw's Keeping the Feast. Julian date conversions based on Fliegel-Van Flandern algorithms from the Astronomical Almanac, provided by Doctor Fenton on the Math Forum and converted to batch code by Ron Bakowski.
💾	❔	iDate.bat	Read the date format setting from the registry	Uses REG.EXE.
💾	❔	IsDate.bat	Tests if the specified date is a valid date
💾	❔	IsDST.bat	Tests if the current or specified date/time is in Daylight Saving Time	Warning: Changes the system date up to 65 times, which may cause problems for domain members. Use entirely at your own risk. VBScript and C# versions are safer to use.
📦	❔	IsRTCSet.bat	Check if the CMOS Real Time Clock is set, and return an errorlevel greater than 0 if not	Uses DEBUG to read the RTC status from the CMOS.
💾	❔	iTime.bat	Read the time format setting from the registry	Uses REG.EXE.
💾	❔	LeapYear.bat	Check if the specified year is a leap year or not	Code to extract current year by Simon Sheppard.
💾	❔	Now.bat	Display the current time in HHmmss format with any delimiter you want	Uses DEBUG.
📦	❔	PMSoon.bat	Schedule at relative times instead of absolute times	A "clone" of the Windows NT 4 Server Resource Kit's SOON command using NT's native NET Time and AT commands only.
💾	❔	sDate.bat	Read the date separator (delimiter) setting from the registry	Uses REG.EXE.
💾	❔	SetDate.bat	Store the current day in an environment variable	Code is more complex than usual to allow it to be used in any NT version; as of Windows 2000 the %DATE% variable can be used instead.
💾	❔	SetTime.bat	Store the current time in an environment variable	As of Windows 2000 the %TIME% variable can be used instead.
💾	❔	SortDate.bat (2.*)	Store sorted date in variable, independent of Control Panel's "Regional Settings"	Uses REG.EXE.
💾	❔	SortDate.bat (3.*)		Uses REGEDIT.
💾	❔	SortDate.bat (4.*)		Uses code from Simon Sheppard's GetDate.bat to convert the current date to YYYYMMDD format. This technique is not entirely language independent, though it does not depend on regional settings.
💾	❔	SortDate.bat (5.*)		Uses WMIC.
💾	❔	SortTime.bat (2.*)	Store sorted time in variable, independent of Control Panel's "Regional Settings"	Uses REG.EXE.
💾	❔	SortTime.bat (3.12)		Uses REGEDIT.
💾	❔	SortTime.bat (3.40)		Uses REGEDIT and FINDSTR.
💾	❔	StarDate.bat	Convert current date and time to stardate	Algorithm found on The Star Trek Gallery.
💾	❔	StarDateXP.bat	Convert current date and time to stardate	Algorithm found on The Star Trek Gallery. Uses WMIC.
💾	❔	sTime.bat	Read the time separator (delimiter) setting from the registry	Uses REG.EXE.
💾	❔	Today.bat	Display the current date in DDMMYYYY or YYYYMMDD format, with any delimiter you want	Uses DEBUG.
💾	❔	TodayNow.bat	Display the current date and time in YYYYMMDDHHmmss format without any delimiters	Uses DEBUG.
💾	❔	Week.bat	Display the current week number.	Uses REGEDIT.
💾	❔	WeekXP.bat	Display the current ISO week number.	More accurate than the NT version Uses WMIC.
💾	❔	Yesterday.bat	Display yesterday's, today's and tomorrow's date in two formats	Uses REGEDIT if REG is not available.

Notes: Most of the following NT batch files were created and tested in Windows NT 4 and/or Windows 2000.
Most of them will work or can be adapted to work in Windows XP as well.
However, keep in mind that Microsoft has made some changes in the output of the DATE /T and TIME /T commands, depending on the Regional Settings used.

In the Canadian English version of XP for example, DATE /T does not return the Day Of Week, only MM/DD/YY.
Workaround: FOR %%A IN (%Date%) DO SET Today=%%A

DIR's time stamp uses HH:mm AM or PM in XP, instead of 2000's HH:mma or m.
Workaround: That's a long story, just take a look at SortTime.bat to see how Harry Teufel and yours truly solved this.

And last but not least, REG.EXE 2.0 (Windows 2000 and later), is not backwards compatible! This means that code written for earlier versions (i.e. the one from theWindows NT 4 Resource Kit) has to be modified.
Sometimes you don't need to check for REG.EXE's version, just run the command twice, once for the old REG and once for the new one. This technique is demonstrated in iDate.bat, sDate.bat, iTime.bat and sTime.bat.

page last modified: 2012年11月18日; loaded in 0.0185 seconds