尝试用john 破解ubuntu 14.04.2的密码，未遂

1. 安装john

apt-get install john

2. 生成要破解的文件。

unshadow /etc/passwd /etc/shadow > ./file_crack

3. 下载字典

wget http://downloads.skullsecurity.org/passwords/john.txt.bz2

4. 开始破解，这时候奇怪的事情发生了。

root@ubuntu:~/.john# john --wordlist=/usr/share/john/password.lst ./file_crack
Loaded 2 password hashes with 2 different salts (crypt, generic crypt(3) [?/64])
Press 'q' or Ctrl-C to abort, almost any other key for status
0g 0:00:00:28 100% 0g/s 123.6p/s 247.2c/s 247.2C/s !@#$%..sss
Session completed
root@ubuntu:~/.john# john --show ./file_crack
0 password hashes cracked, 2 left
root@ubuntu:~/.john# ^C
root@ubuntu:~/.john# john --wordlist=john.txt.bz2 file_crack
Loaded 2 password hashes with 2 different salts (crypt, generic crypt(3) [?/64])
Press 'q' or Ctrl-C to abort, almost any other key for status
0g 0:00:00:00 100% 0g/s 62.12p/s 124.2c/s 124.2C/s BZh91AY&SYU??.错?
Session completed
root@ubuntu:~/.john#
root@ubuntu:~/.john# john --show ./file_crack
0 password hashes cracked, 2 left

5.问题到底出在哪里？