> > sort foo | uniq > Broken. uniq alone removes only adjacent duplicates. You need uniq -u to remove all duplicates. As benchaney (https://news.ycombinat

> > sort foo | uniq > Broken. uniq alone removes only adjacent duplicates. You need uniq -u to remove all duplicates. As benchaney (https://news.ycombinator.com/item?id=17060154 https://news.ycombinator.com/item?id=17060154) points out, the duplicates will be adjacent after `sort`.