A couple of things:

my @args = ("c:/glomosim/bin/","data.in");

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Here you provoide a directory, but not the name of the executable you want to call. Also if you have the data.in file within the bin directory you'll need to do:

my @args = ("c:\\glomosim\\bin\\glomosim.exe","c:\\glomosim\\bin\\data
+.in");

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Note that in both occasions I provide the full path to the file, and use \\ rather than / as the path separator. As a piece of general advice, the easiest way to get help with errors is to post the erros along with the code which generates them. How do I post a question effectively? has some great advice on posting. Let me know if you have further problems

In reply to Re^4: system sub routine with windows7 by marto
in thread system sub routine with windows7 by Njoud

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