With lots of assumptions... 
use warnings;
use strict;
use File::Basename  qw(fileparse);
use File::Slurp     qw(slurp);

for my $fin (glob '*.in') {
    my $fout = (fileparse($fin, qr/\.in/))[0] . '.out';
    my @ins  = slurp($fin);
    my @outs = slurp($fout);
    my $id_in  = (split /\s+/, $ins [3])[5];
    my $id_out = (split /\s+/, $outs[1])[4] . '0';
    if ($id_in eq $id_out) {
        print "match\n";
    }
    else {
        print "no match\n";
    }  
}

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In reply to Re: Find a file with same name but different extension by toolic
in thread Find a file with same name but different extension by Jalcock501

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