I was seeing some odd behaviour with sort -n -u. I ran sort -n -u dataset and expected the same output as sort -n dataset| uniq but instead got something different. sortbug is a script file showing the usage described above, dataset is the dataset. here is the version I am running.
sort (GNU coreutils) 8.21 Copyright (C) 2013 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html >. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Written by Mike Haertel and Paul Eggert. Thanks, Nathan
dataset
Description: Binary data
sortbug
Description: Binary data
