Hi, I'd like to sort, maybe cut, and redirect text lines based on the 3 or 4 last chars; is this possible? how? I have a command like this: sort -o out.txt -k 1,2 -b -f -i src.txt cat out.txt |sort |uniq >nodupes.txt But I'd like to replace 1,2 by the right param for sorting based on the 3 4 last chars + supressing dupes too as above. Thax for help, Ald0