2017-07-24 Today, I understood sort(1) better. The motivation was a thread in the Debianforum [0] ... like so often! The main new knowledge is: You can use `-k5.3,5n' to sort numeri- cally by the fifth field, starting at it's third character. [1] [0] https://debianforum.de/forum/viewtopic.php?f=34&t=166099 [1] http://pubs.opengroup.org/onlinepubs/9699919799/utilities/sort.html#tag_20_119_13 http://marmaro.de/lue/ markus schnalke