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系统环境：CentOS Linux release 7.2.1511@H_502_2@

john版本：john-1.8.0@H_502_2@

官方网站：http://www.openwall.com/john/@H_502_2@

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安装：@H_502_2@

wgethttp://www.openwall.com/john/j/john-1.8.0.tar.gz
tar-xfjohn-1.8.0.tar.gz
cdjohn-1.8.0/src/

编译：@H_502_2@

yum-yinstallgccgcc-c++make
make
makelinux-x86-64

安装完成：@H_502_2@

lsjohn-1.8.0/run/

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简单使用：@H_502_2@

useraddzhangsan
echo123456|passwd--stdinzhangsan
cp/etc/passwd/etc/shadow.
./unshadowpasswdshadow>mypasswd
./johnmypasswd

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./john mypasswd 的输出结果，可以看到zhangsan的密码已经被破解@H_502_2@

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Loaded 2 password hashes with 2 different salts (crypt,generic crypt(3) [?/64])@H_502_2@

Press 'q' or Ctrl-C to abort,almost any other key for status@H_502_2@

123456 (zhangsan)@H_502_2@