I'm trying to remove duplicate lines from a file. File format goes something like this: 
Name1
Name2
Name2
Name3
Name3
Name3
Name3
Name4
Name4

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I want to output the following to another file: 
Name1
Name2
Name3
Name4

[download]
This's what I have but although it removes duplicates up to Name3, it outputs Name4 multiple times. Any ideas as to what i'm doing wrong? 
while ($line = <FILENAME>) {
chomp $line;
{
$uniquelines{$line}=1;
}
foreach $k (keys %uniquelines) {
print NEWFILE "$k\n";
}

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Thanks!

In reply to removing duplicate lines by Anonymous Monk

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