> [...] --listing-file=".listing.1" [...]

   It might be easier (for the victim) to have the code use a
unique-ified name automatically instead of (plain) ".listing". 
".listing_<pid>", or something from tmpnam() or tempnam() (or whatever's
popular nowadays).

------------------------------------------------------------------------

   Steven M. Schweda               s...@antinode-info
   382 South Warwick Street        (+1) 651-699-9818
   Saint Paul  MN  55105-2547


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