http://www.perlmonks.org?node_id=1036623


in reply to external program variables

So just use variables.

# Iterate millions of input/output file names...
foreach (...) {
    # Execute external command on pairs of input/output file names...
    system("my_program.exe my_parameter_file.par -option1 -option2 \
            $input_file_name $output_file_name");
}

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Where is the list of millions of input and output file names coming from?

In Section Seekers of Perl Wisdom