i would like to port crunch to n900 and i don't know from where to start...Could anyone experienced help me?

What is crunch?

Crunch can create a wordlist based on criteria you specify. The outout from crunch can be sent to the screen, file, or to another program.

usage: crunch <min-len> <max-len> [-f /path/to/charset.lst charset-name] [-o wordlist.txt] [-t [FIXED]@@@@] [-s startblock] [-c number]