sort lines of text files |
-t, --field-separator=SEP use SEP instead of non-blank to blank transition |
-k, --key=POS1[,POS2] start a key at POS1 (origin 1), end it at POS2 (default end of line). See POS syntax below |
-n, --numeric-sort compare according to string numerical value |
-M, --month-sort compare (unknown) < `JAN' < ... < `DEC' |