Batch files - Examples (D*)

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Batch file examples
	Name	Description	OS (1)	Last modified (DD/MM/YYYY)	Remarks
	DateAdd	Add/subtract a specified number of days to/from a specified date	NT	12/02/2007	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	Calculate the difference in days between two dates	NT	04/06/2007	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
	DateFmt	Show the current date in the specified format	NT	29/11/2007	Inspired by Simon Sheppard's GetDate.bat
	DateTime	Store week day, current date and current time in environment variables	All		Take a look at SortDate and SortTime for an NT version with language independent sorting, or at DateErrT for a version that uses ErrTime by Phil Money to remain virtually OS independent
	DDLU.bat	Don't Display Last Username: clears the last user name from the login dialog box permanently.	NT	20/12/2001	Use CLLUN.bat instead to remove the last logon user name just this once
	DeadProf.bat	Delete inactive corrupted profiles for current user	NT	15/09/2000
	Dec2Hex.bat	Convert a decimal number to 8 digit hexadecimal	NT	08/12/2007	This batch file uses a "poorly documented" feature of the PING command to convert a decimal number to hexadecimal. Requires FINDSTR (not native in NT 4, but part of the Resource Kit). Also available in KiXtart, Perl, Rexx and VBScript.
	DecToHex.bat	Convert a decimal number to "7.5" digit hexadecimal	NT	08/12/2007	This batch file uses CMD.EXE's internal commands only. Also available in KiXtart, Perl, Rexx and VBScript.
	DefOpen.bat	Create a default file association to Notepad and add "Open with Notepad", "Print with Notepad" and "Command Prompt Here" options to popup menus	95 98 NT 2000 XP	21/11/2007	Based on a tip by Regedit.com. More details on my REGEDIT page.
	DefPRN.bat	Display default printer name	NT	07/11/1999	Also available as OS/2 Rexx, Windows Rexx, JScript, KiXtart, Perl and VBScript scripts
	DefPRN2K.bat		W2K	13/02/2002
	DelFlash.bat	Delete "Local Stored Objects", also known as "Flash Cookies", from the current user's profile	NT	15/09/2007	Tested on Windows XP SP2 only. Use entirely at your own risk! Also available in VBScript.
	DelOutlX.bat	Uninstall Outlook Express (BETA!)	W2K	20/12/2003	Tested on 1 Windows 2000 computer only. Use entirely at your own risk!
	DelProf.bat	Delete specified profile (BETA!)	NT	17/12/2003	Still in beta! That is why the most destructive command of the batch file is echoed only.
	Desktop.bat	Uses SHORTCUT.EXE to save all desktop shortcuts as a batch file that can recreate those shortcuts again (Desktop backup)	NT+RK	05/08/2001
	Disabled.bat	Lists all disabled user accounts	NT	21/09/2000
	DiskFree	Check amount of free disk space, the hard way	All		Use FreeSpace.vbs if you need a more reliable tool
	DiskSpc	Display harddisk summary for any WMI enabled computer or for a list of computers	XP	02/10/2006	Uses WMIC
	DiskUse.bat	List the disk usage for every subdirectory	NT	20/12/2003	Returns negative numbers if total file sizes exceed 2GB. Also available as Rexx script
	DiskUse.bat		W2K	21/12/2003	Fixed negative numbers bug for Windows 2000/XP
	DispEDID.bat	Display your monitor's EDID asset information	XP	20/02/2007	Also available in VBScript
	DllMenu.bat	Add "Register" and "Unregister" to Explorer's context menu for DLLs & OCXs	W2K	18/04/2007
	DriveRdy.bat	Check if (removable) drive is ready	DOS6+ OS2	18/07/1999	Also available as OS/2 Rexx script
	Drives.bat	List local drive letters and types	W2K	17/12/2003
	DrivUsed.bat	List used and available drive letters	XP	30/12/2007