网上关于hachcat的简单使用方法介绍很多，然而却很少有在kali linux上的安装教程，找了好长时间，终于安装成功了，特此将中间借鉴的内容记录如下：
#首先安装p7z，用于解压下载的p7z包
#然后安装hashcat
Lets Begin the journey of Cracking Passwords…..
Download Hashcat:
Download the latest Hashcat on your Linux distribution (My Distribution is Ubuntu) from the Hashcat website.
$ wget https://hashcat.net/files/hashcat-2.00.7z
To extract the archive, you need to have 7zip utility installed. If you don’t have it on your system, install it:
Redhat/Centos/Fedora
$ yum install p7zip
In case, if yum install didn’t work for you, then you need to setup YUM repository that contains p7zip package.
Ubuntu/Debian
$ apt-get install p7zip
Unpack:
Extract the archive using the installed 7zip utility
Redhat/Centos/Fedora
$ 7za x hashcat-2.00.7z
Ubuntu/Debian
$ p7zip -d hashcat-2.00.7z
Now change to the Hashcat directory:
$ cd hashcat-2.00
You can see the binary executable as shown below:
$ ls -l hashcat-cli*.bin
Based on your Hardware & OS installation, choose either 32bit or 64 bit binary. You can find out using the command:
$uname -a Linux ubuntu 3.13.0-65-generic #106-Ubuntu SMP Fri Oct 2 22:08:27 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
Since my OS is 64 bit, I would use Hashcat binary compiled on 64bit (hashcat-cli64.bin). Just to make our lives easier, lets copy the binary to the standard binary locations like : /usr/bin/
$ cp hashcat-cli64.bin /usr/bin/