1. redirection

Okay this is about redirection , from the dos command line or through
 a system( ) type call ; the two being essentially the same I hope.

  system("afile.* > bfile.*",2) for instance appears to transfer [ command
 line ? ] data to bfile.* from afile.* .
  What of double re-direction though , afile.* < > bfile.* , from within
 a system() call  or the operator ; afile.* >> bfile.* , again from within
 a system call ?
  How is data transferred to bfile.* from afile.* , when using redirection,
 is the disk used or is the RAM , what exactly is the mechanism involved.

  I wish to use command line parameters and redirection to :

            1.  Generate data within an external u4.ex , from a system()
               call from another file hed.ex or hed.exe .

                   ---------.          .---------.
                  | hed1.*  |=========>| u4.ex   |
                  |         | system() |         |
                  .---------'          ;---------'

            2.  Redirect the data , generated within u4.ex , to another
               file , to be read by hed1.* ; or if possible return
               [ redirect ] the data from u4.ex to hed1.*.

   I wish to keep disk activity to a minimum and get hed1.* to do most of
  the data manipulation.


Net-Tamer V 1.11 - Test Drive

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