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    my $myresult = "";
    while(<$mystdout>){
        $myresult = "$myresult$_";
    }

    my $myresult = "";
    while(<$mystdout>){
        $myresult .= $_;
    }

    my $myresult = join '', <$mystdout>;

    local $/;
    my $myresult = <$mystdout>;