Since your sort command doesn't specify a field separator character and since there are no blanks in your input file, the command:

Code:

sort

will produce exactly the same results. And, as I said before and as PikK45 has also noted, using this sort order and deleting the last line of the sorted results doesn't even come close to the output you said you expect.

Even if I assume that there are multiple concatenated sets of sorted lines in your input file, the output you said you expect still doesn't even come close to what you would get by deleting the last line of each sorted set of lines in your input.