破解密码..linux

破解用户密码:(用john破解用户liming密码)
grep liming /etc/passwd>/test/liming.passwd
grep liming /etc/shadow>/test/liming.shadow
/test/john-1.6.6/run/unshadow /test/liming.passwd
/test/liming.shadow>/test/liming.john
/test/john-1.6.6/run/john/test/liming.john