Here is a suggestion, if not a specific answer. In the general case of system calls, system is generally preferable. as in:

my $command = qq{syscall $interp};
run_command_string($command);

sub run_command_string {
    my $command = shift;
    $log->info("attempt to run the following command:");
    $log->info("$command");
    system $command;

    if ( $? == -1 ) {
        $log->error("failed to execute: $!\n");
    }
    elsif ( $? & 127 ) {
        $log->error("child died with signal $? $!");
    }
    else {
        $log->info("child exited with value $?");
    }
}
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use File::Copy;
use File::Path;
#my $filename, $file2 declared somewhere

move( "$filename", "$file2" ) or die "move failed: $!";
#check File::Path's mkpath for use
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