Your first call to readdir goes into "my $dir" and then gets discarded by the next call in the condition of the while loop. 

opendir my $Tdir, "/path/to/anywhere"
    or die "Can't opendir '/path/to/anywhere': $!";
my $dir;
while($dir = readdir($Tdir)){
    print "$dir\n";
}
closedir $Tdir;

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In reply to Re: readdir missing one file by kyle
in thread readdir missing one file by true

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