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Batch files
 Batch files are Textdocuments, which contain a series of commands and execute them, one after another. A batch file can be activated if you doubleclick on it or if you type the name of the batch file into the Command prompt. The purpose of such files is to automate certain repetitive actions and to enable you to work faster and with more comfort. Here is an example of a small batch file that enables you to restart your PC with a doubleclick on this batch on the desktop (without going to Start>Shut Down...>Restart) :

  rundll32.exe shell32.dll,SHExitWindowsEx 2

 In order to make of this a batch file, open Notepad, type the code from above (pay attention to the two spaces), save it as "restart.bat" (the name doesn't matter, but the extension ".bat" is important) and choose "All files". Similar to this, you can make a Shutdown batch, which can be used with the Task Scheduler to automatically shut down the PC on a predefined time (included in Batch.zip). See below for other rundll commands.
 
If you don't want to see the DOS window during the execution of a Batch file right-click on the Batch file, select 'Properties' and then choose the Program tab, select in the Run: field Minimized and below that check Close on exit.
To edit or just to view the source of a Batch file right-clik on its icon and select Edit (if you double-click the icon or press ENTER the Batch file will be executed).
Here are some more examples of simple batch files: type into Notepad REGEDIT and save this with an .bat extension (for example, regedit.bat). With a double-click on this file you can now open the Registry Editor. SNDREC32 would open the Sound Recorder, SNDVOL32 the volume control applet etc.
• If you want to know more about Batch files order by email Batch.zip (50 KB, explanations in text format, 5 Euro/US$), where you can find more than 30 ready-made Batch files: deleting cookies, starting several programs simultaneously, prolong shareware test-period, instant hiding of folders and files, automating backups etc.

Rundll Commands

 Command

 Result

rundll32.exe shell32.dll,Control_RunDLL main.cpl @3

displays the Fonts Folder in Explorer view

rundll32.exe shell32.dll,Control_RunDLL main.cpl @

displays Power Management Properties

rundll32.exe shell32.dll,Control_RunDLL modem.cpl,,add

Runs the Add New Modem wizard

rundll32.exe shell32.dll,Control_RunDLL main.cpl @2

displays the Printers Folder (including Add Printer)

rundll32.exe shell32.dll,Control_RunDLL mmsys.cpl,,0

displays the Multimedia/Audio property page

rundll32.exe shell32.dll,Control_RunDLL mmsys.cpl,,1

displays the Multimedia/Video property page

rundll32.exe shell32.dll,Control_RunDLLmmsys.cpl,,3

Multimedia/CD Music property page

rundll32.exe shell32.dll,Control_RunDLL mmsys.cpl,,4

displays the Multimedia/Advanced property page

rundll32.exe shell32.dll,Control_RunDLL mmsys.cpl @1

displays the Sound Properties page

rundll32.exe shell32.dll,Control_RunDLL netcpl.cpl

displays the Networks properties, Configuration tab

rundll32.exe shell32.dll,Control_RunDLL odbccp32.cpl

displays the ODBC32 Data Source Administrator properties

rundll32.exe shell32.dll,OpenAs_RunDLL  {drive:\path\filename}

displays the application/file "Open With" dialog

rundll32.exe shell32.dll,Control_RunDLL password.cpl

displays the Passwords properties, Change Passwords tab

rundll32.exe shell32.dll,Control_RunDLL powercfg.cpl

displays the Power Management properties, Power Schemes tab

rundll32.exe shell32.dll,Control_RunDLL intl.cpl,,0

displays the Regional Settings property page

rundll32.exe shell32.dll,Control_RunDLL intl.cpl,,1

displays the Numbers property page

rundll32.exe shell32.dll,Control_RunDLL intl.cpl,,2

displays the Currency property page

rundll32.exe shell32.dll,Control_RunDLL intl.cpl,,3

displays the Time property page

rundll32.exe shell32.dll,Control_RunDLL intl.cpl,,4

displays the Date property page

RUNDLL.EXE rnaui.dll,RnaWizard

Dial-Up Network connection wizard

RUNDLL.EXE shell,shellexecute

Open Explorer window

sysdm.cpl,InstallDevice_Rundll

Hardware Installation wizard

RUNDLL.EXE user,MessageBeep

default beep sound

RUNDLL.EXE user,repaintscreen

same as F5 in an Explorer window

RUNDLL.EXE user,setcursorpos

cursor is set to the upper left

RUNDLL.EXE user,SwapMouseButton

swapping mouse buttons

RUNDLL.EXE user,cascadechildwindows

Cascade all windows

RUNDLL.EXE user,tilechildwindows

Tile all windows

RUNDLL.EXE user,wnetconnectdialog

Map Network drive

RUNDLL.EXE user,wnetdisconnectdialog

Unmap Network drive

RUNDLL.EXE user,ExitWindows

Exit Windows

RUNDLL.EXE user,ExitWindowsExec

Restart Windows

RUNDLL32.EXE rnaserv,CallerAccess

start Dial-Up Server

RUNDLL32.EXE shell32,Control_RunDLL

start Control Panel

RUNDLL32.EXE shell32,Control_RunDLL X

"X" = any CPL filename

RUNDLL32.EXE shell32,OpenAs_RunDLL

"Open with" dialog box

RUNDLL32.EXE shell32,ShellAboutA

About in an Explorer window

RUNDLL32.EXE shell32,SHExitWindowsEx X

Exit Windows, where these values apply for X:
1: Exit Windows
2: Reboot PC
4: Close all applications
8: Exit Win and turn-off ATX-compatible PC
0: Restart Windows shell
-1: Restart Explorer

RUNDLL32.EXE shell32,SHFormatDrive

"Format Disk" dialog box

RUNDLL.EXE krnl386.exe,exitkernel

Exit Windows without prompting