MS-DOS Commands :: start
Starts a new window to run a specified program or command.
start "directory name with spaces"
Start a new window in Windows Explorer that shows the specified directory. For example: start c:\users opens the c:\users users directory in a window.
If the directory name directory contains spaces, then enclose it in quotation marks
(e.g.: start "c:\users\john\documents\budget estimates").
If you use . as the directory (i.e.: start .), then the current directory will be opened in a Windows Explorer window.
Opens the specified drive in a Windows Explorer Window. For example,
start c:opens the c: drive, and start d:opens the d: drive (typically the DVD or CD-ROMdrive).
start "filename with spaces"
The specified file file will be opened using the application that is associated with the file's extension. For example,
start letterhead.docwould open the file letterhead.doc (located in the current directory); and since .doc files are associated with Microsoft Word, the file will be opened using Microsoft Word.
If the file filename contains spaces
(e.g.: Q4 Budget.doc)then enclose the filename in quotation marks (e.g.: start "Q4 Budget.doc").
You can also specify a directory along with the filename. For example:
start "c:\users\john\documents\q4 budget.doc"
Starts a separate window to run a specified program or command. START ["title"] [/Dpath] [/I] [/MIN] [/MAX] [/SEPARATE | /SHARED] [/LOW | /NORMAL | /HIGH | /REALTIME | /ABOVENORMAL | /BELOWNORMAL] [/WAIT] [/B] [command/program] [parameters] "title" Title to display in window title bar. path Starting directory B Start application without creating a new window. The application has ^C handling ignored. Unless the application enables ^C processing, ^Break is the only way to interrupt the application I The new environment will be the original environment passed to the cmd.exe and not the current environment. MIN Start window minimized MAX Start window maximized SEPARATE Start 16-bit Windows program in separate memory space SHARED Start 16-bit Windows program in shared memory space LOW Start application in the IDLE priority class NORMAL Start application in the NORMAL priority class HIGH Start application in the HIGH priority class REALTIME Start application in the REALTIME priority class ABOVENORMAL Start application in the ABOVENORMAL priority class BELOWNORMAL Start application in the BELOWNORMAL priority class WAIT Start application and wait for it to terminate command/program If it is an internal cmd command or a batch file then the command processor is run with the /K switch to cmd.exe. This means that the window will remain after the command has been run. If it is not an internal cmd command or batch file then it is a program and will run as either a windowed application or a console application. parameters These are the parameters passed to the command/program If Command Extensions are enabled, external command invocation through the command line or the START command changes as follows: non-executable files may be invoked through their file association just by typing the name of the file as a command. (e.g. WORD.DOC would launch the application associated with the .DOC file extension). See the ASSOC and FTYPE commands for how to create these associations from within a command script. When executing an application that is a 32-bit GUI application, CMD.EXE does not wait for the application to terminate before returning to the command prompt. This new behavior does NOT occur if executing within a command script. When executing a command line whose first token is the string "CMD " without an extension or path qualifier, then "CMD" is replaced with the value of the COMSPEC variable. This prevents picking up CMD.EXE from the current directory. When executing a command line whose first token does NOT contain an extension, then CMD.EXE uses the value of the PATHEXT environment variable to determine which extensions to look for and in what order. The default value for the PATHEXT variable is: .COM;.EXE;.BAT;.CMD Notice the syntax is the same as the PATH variable, with semicolons separating the different elements. When searching for an executable, if there is no match on any extension, then looks to see if the name matches a directory name. If it does, the START command launches the Explorer on that path. If done from the command line, it is the equivalent to doing a CD /D to that path.
(Enlarge: help start)