readline() on unopened filehandle at

[Noah]

Hi there,

I am trying to figure out why the following error is happening from time 
to time when I am unlink'ing a file.

readline() on unopened filehandle at ./check.pl line 207.

here is the code - lines 205-207

    my $filename = "$outputdir/$device.$configuration_file_ext";
    print "filename: $filename\n";
    unlink ($filename) if (-e $filename);


Cheers,

Noah

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