Echo dedsec skull and change prompt to make your shell totally haxx0r.

dedsec.sh

#!/bin/bash
echo "
                             │
                        pN▒g▒p▒g▒▒g▒ge
                       ▒▒▒▒▒▒▒░░▒░▒░▒
                     _0▒░▒░▒░░▒▒▒▒▒▒▒!
                     4▒▒▒▒▒░░░▒░░▒▒▒▒▒Y
                     │\` \~~#00░░0 MMM\"M│
                          \`gM░M7
                    │       00q0       │
      J0IN          #▒____g▒0░░P______0
                    #▒0g_p#░░04▒▒&,__M#
       U5           0▒▒▒▒▒00   ]0▒▒▒▒00
                     │\j▒▒0'  \`0▒▒▒4M'
                      │\#▒▒&▒▒gg▒▒0& │
                     \" ▒▒00▒▒▒▒00▒▒'d
                     %  ¼▒  ~P▒¼▒▒│¼¼│
                     M▒9  ▒▒      ▒j,g
                     l▒g▒   @▒9     ▒
                      ~▒0▒▒▒p ▒g▒  %
                        @░▒▒▒▒▒  ▒▒░
                         M0░░  ░░^
                           \`
"
export PS1=">DEDSEC:\w "