I have been trying to crack WPA using aircrack-ng dictionary based attack. I have a huge word list and I'd like to know if there is a way to start from bottom of the wordlist, like starting with last word in file to the first. Is there any tool or technique that will let me create a copy of the same dictionary but in reverse order.
(And I do own the access point I am trying to gain access into. This question is just out of curiosity because I couldn't finish entire dictionary in one go, it stopped at around 90%, it'd be better to start from bottom).

Some tools let you resume failed or interupted attacks. Depending if your word list is sorted or not already, then you might be able to do a sort -r.

You're kidding me?

tac is the reverse of cat. How clever!
Thanks ajohnson

Thanks for all the answers.
Tac worked like charm!!
I ended up writing a small python script that could invert the word list. 'split' does a good job in breaking down a large dictionary into small chunks.