On 12/12/2011 10:54 PM, Stéphane Blondon wrote: > Tool: uniq > Priority: wishlist > > Hello, > > I think `uniq` should have an additional option (for example -a, > --all) to remove same lines but not adjacent. > > The man page explains a workaround based on `sort` but it can be > complex to use. Few weeks ago, I had to `uniq`-ize random numbers and > the sort couldn't really work. Fortunately, the order was not > important so using `sort | uniq | sort --random-sort` was an > acceptable solution. I imagine cases based on other tools like `top` > could be a problem too. > > If you are interested, I could try to provide a patch. (I have learnt > C but I don't use it today.) > > I don't think the increase of memory use is a problem today, so a > warning in the manpage should be enought.
Well that would increase the complexity of `uniq` a _lot_ http://lists.gnu.org/archive/html/coreutils/2011-11/msg00018.html For that reason I would be against adding such a feature. Note improving the field selection of `uniq` is appropriate, and would make DSU solutions using sort, easier to implement. cheers, Pádraig.
