Displays or modifies file types used in file extension associations FTYPE fileType[=[openCommandString fileType Specifies ...

Displays or modifies file types used in file extension associations    FTYPE [fileType[=[openCommandString]]]      fileType  Specifies the file type to examine or change    openCommandString Specifies the open command to use when launching files                      of this type.    Type FTYPE without parameters to display the current file types that  have open command strings defined.  FTYPE is invoked with just a file  type, it displays the current open command string for that file type.  Specify nothing for the open command string and the FTYPE command will  delete the open command string for the file type.  Within an open  command string %%0 or %%1 are substituted with the file name being  launched through the assocation.  %%* gets all the parameters and %%2  gets the 1st parameter, %%3 the second, etc.  %%~n gets all the remaining  parameters starting with the nth parameter, where n may be between 2 and 9,  inclusive.  For example:        ASSOC .pl=PerlScript      FTYPE PerlScript=perl.exe %%1 %%*    would allow you to invoke a Perl script as follows:        script.pl 1 2 3    If you want to eliminate the need to type the extensions, then do the  following:        set PATHEXT=.pl;%%PATHEXT%%    and the script could be invoked as follows:        script 1 2 3