Use a bidirectional open to pipe in the output and when the prompt is encountered, merely print:

use IPC::Open2;

my $pid = open2(*OUTPUT, *INPUT, "program.exe");
while (my $line = <OUTPUT>) {
    print INPUT 'f' if /Abort\/Retry\/Ignore/;
}

[download]

Be sure to read more about bidirectional IPC, in perlfunc under open and perlipc. The above is merely an example -- the referenced perldoc describe the IPC is considerable detail and are recommended reading.

In reply to Re: Handling third party exe messages through perl script? by eibwen
in thread Handling third party exe messages through perl script? by cr_ashok

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