write matrix chars to another user console for manipulation

watch the video for action :-).

#!/bin/bash -       
#title           :matrix_to_user_console.sh
#description     :This script will write matrix characters to another user console :-) .
#author          :Mehmet DEMİR
#date            :20140302
#version         :0.1    
#usage           :bash matrix_to_user_console.sh
#notes           :Will be fun!
#==============================================================================

#remove comment if target user at remote
#ssh root@10.6.181.111 

target_user="mehmet"
the_message="\n
\n
################################################\n
################################################\n
################## THE MATRIX ##################\n
################################################\n
# Your computer got involved in matrix network.#\n
# Don't touch this machine! ####################\n
################################################\n
################################################\n
\n
\n"
message_duration=10 # as second
target_tty="/dev/"`who|grep $target_user|tail -1|awk {'print $2'}`


echo -e $the_message > $target_tty
sleep $message_duration

# from https://github.com/devsnd/matrix-curses/blob/master/matrix-curses.py
MATRIX_CODE_CHARS=(ɀ Ɂ ɂ ŧ Ϣ ϣ Ϥ ϥ Ϧ ϧ Ϩ ϫ Ϭ ϭ Ϯ ϯ ϰ ϱ Ϣ ϣ Ϥ ϥ Ϧ ϧ Ϩ ϩ Ϫ ϫ Ϭ ϭ Ϯ ϯ ϰ ߃  ߄ ༣ ༤ ༥ ༦ ༧ ༩ ༪ ༫ ༬ ༭ ༮ ༯ ༰ ༱ ༲ ༳ ༶)

count=${#MATRIX_CODE_CHARS[*]}

maxcol=15

while (true);  do  

    noshow=$((RANDOM % $count))
    noshowchar[$noshow]=$noshow;

    for (( i=0; i<=$maxcol; i++ ))
    do
            if [ "${noshowchar[$i]}" == "$i" ]; then
                printf '\t%s' ' ' > $target_tty
            else
                index=$((RANDOM % $count))
                printf '\t%s' ${MATRIX_CODE_CHARS[$index]} > $target_tty          
            fi  
    done
     
     printf '\n' > $target_tty
     sleep 0.05

     noshowchar[$((RANDOM % $count))]=100;
     noshowchar[$((RANDOM % $count))]=100;
     noshowchar[$((RANDOM % $count))]=100;
     noshowchar[$((RANDOM % $count))]=100;
     noshowchar[$((RANDOM % $count))]=100;

done

exit 0