I have a list of IP addresses. Sorting them with sort -n works as expected. Sorting them with sort -u works as expected.
$ sort -u /tmp/list 173.194.64.26 173.194.64.27 173.194.65.26 173.194.65.27 173.194.66.26 173.194.66.27 173.194.67.26 173.194.67.27 173.194.69.26 173.194.70.26 173.194.70.27 173.194.71.26 173.194.71.27 173.194.78.26 173.194.78.27 But: $ sort -u -n /tmp/list 173.194.70.27 This is just the last one in the file. Am I missing something obvious? Jan