Microsoft Windows Command Prompt filename completion - 2003-11-23 This tip is very useful for anyone who needs to use a Windows command prompt.  Most Linux users know that hitting tab will automatically complete the filename or directory name being typed(depending on which shell you use).  This can greatly simply the task of typing a long directory name or filename.  Windows by default doesn't behave this way but you can make it by doing the following:

1)  Open the registry editor(regedit.exe)

2)  Traverse the registry till you reach the following key: 

(Current User Only)  HKEY_CURRENT_USER\Software\Microsoft\Command Processor

(All Users on the Computer)  HKEY_LOCAL_MACHINE\Software\Microsoft\Command Processor

3)  Add(or edit) new DWORD values named CompletionChar and PathCompletionChar.

4)  Set the value of the above DWORD to 9(with Hexidecimal option selected) for tab complete(You can specify any key using its hex value).