Another alternative might be to use a pipe:
system("perl script1.pl input.txt - |".
       "perl script2.pl - finalout.txt");

[download]
This assumes that the scripts are using ordinary open to open the output.txt file, which I assume is temporary and not really required.

In reply to Re: Synchronizing Multiple System Processes by cdarke
in thread Synchronizing Multiple System Processes by neversaint

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