Tracy,

There is indeed a temporary file involved.  I performed the following test:

1.  Copied XL.PUB into XLTEMP
2.  Invoked LINKEDIT and issued the command XL XLTEMP
3.  Established another session and using GLANCE I monitored the PIN for
LINKEDIT in my first session.
4.  I displayed the open files under the LINKEDIT pin.

Below is the display.  Note that XLTEMP.SUPUTIL.SYS appears twice, once in
the PERM domain and once in the NEW.  So there IS a window of opportunity.

Regards
Paul Christidis

Open Files for Process  397 are:

File     Group    Account   Type   Rec-Ptr        EOF Domain Access Share
Opens
LINKEDIT.PUB     .SYS      NMPRG      2505       2974  PERM  LOAD M SEM
1
$STDLIST                                 8             $stdlist
$STDINX                                  3             $stdinx
LKEDCAT .PUB     .SYS                    3        423  PERM  IN
1
$STDLIST                                 0             $stdlist
LKEDHELP.PUB     .SYS                   60       4611  PERM  IN     SHR
1
XLTEMP  .SUPUTIL .SYS       NMXL     66575      66575  PERM  I/O  M EXC
1
XLTEMP  .SUPUTIL .SYS       NMXL         0          0  NEW   I/O  M EXC
1

Press RETURN to continue (or enter a GLANCE command):

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