RouteMsg - Redirect STDOUT/STDERR for child process - V01.00
           Bob Withers, 7/1/89

     Usage:  routemsg [/a] <file> <cmd> [<args>]

             /a     ==> Append program output to <file>
             <file> ==> Output file for data capture
             <cmd>  ==> Program to be executed
             <args> ==> Command line arguments for <cmd>
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