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root@kali:~/pyrit_svn/cpyrit_opencl# pyrit benchmark
Pyrit 0.4.1-dev (svn r308) (C) 2008-2011 Lukas Lueg http://pyrit.googlecode.com
This code is distributed under the GNU General Public License...

http://unix.stackexchange.com/questions/222661/how-to-install-amd-catalyst-15-7-fglrx-15-20-1046-on-kali-2-0-sana

This link above really helps if you are struggling to get AMD driver working with...

Reading package lists... Done
Building dependency tree
Reading state information... Done
Package fglrx-driver is not available, but is referred to by another package.
This may mean that...