Tool requests are Question posts, not Tool posts (the latter are for announcements of new software etc). I’ve changed it for you this time, but please bear it in mind for the future.

Please go through [ Please read before posting a question ] -- How To Ask A Good Question and then consider editing your question.

it always good to give us some info on what you are trying to do exactly.

what command lines did you ran? things like that

i was trying to do Global alignment using nucmer package

Please be more specific about what you are doing and why, what your data is and what you aim to achieve.

but i didn't undrestand results

Please be more specific about the results you got and how that was unclear.

can anyone tell me please the commande line should i use to do global alignment

Please take a look at the documentation and let us know what is unclear.