>perl crack_pw_2.pl
usage: perl crack_pw_2.pl password

>perl crack_pw_2.pl z
found password 'z' in 0 seconds with 26 tries

>perl crack_pw_2.pl zz
found password 'zz' in 0 seconds with 1517 tries

>perl crack_pw_2.pl xy5
found password 'xy5' in 3 seconds with 97967 tries