A more popular, though less effective, way is to use commercial software tools such as “L0phtCrack” or “John the Ripper” that can be found on the internet.

虽不那么有效但更受欢迎的方法是使用商业软件工具，比如“L0phtCrack” or或“John the Ripper”，这些都可以在网络上找到。

youdao

Set John the Ripper loose on your password files to discover any trivial-to-break passwords with which your users are damaging your security posture.

CNN: Analysis: Linux security

From there, he gained access to the system using a program called "John the Ripper, " which cracked all but one of the passwords in the Caldera Inc.

CNN: Technology - Government computers: The ultimate hackers' proving ground