Hi Frank,
I just created a quick test file and sort -u didn't quite work for me (technically it should do what you are asking) but then I realised that I had invisible spaces after some of the words and so they were not deemed uniquely different by the system. Perhaps you are having the same issue. However, I found that the following seems to work - I think it pushes the "spacebar" space into a new line creating unique words minus the space formatting:
cat words.txt | tr " " "\n" | sort -u
Regards,
Tahir
On Sun, Feb 16, 2014 at 4:17 PM, Robert P. J. Day <rpjday@xxxxxxxxxxxxxx> wrote:
On Sun, 16 Feb 2014, Frank Murphy wrote:sort -u?
> I have 554 words in the following file one word per line.
> Some words are repeated up to 3 times.
>
> words.list
>
> If I try "cat words.list | uniq -u"
> It dumps all repeated words, I need one copy of all words.
>
> uniq words.list > uniq.list
> Words are still duplicated.
>
> sort words.list | uniq
> leaves about 20 words total
> which I feel is wrong as
> cat words.list | uniq -c
> shows about 100 non-dupe words
>
> Haven't much success with sort either.
rday
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