#!/bin/bash
c=$(tput cols)
red="\033[1;91m"
green="\033[1;92m"
y="\033[1;93m"
white="\033[1;37m"
oc=$((${#o1}+6))
echo -e ${white}
echo "┌────────────────────────────────────────────────────────────┐"
echo "│                                                            │"
echo "│  _|_|_|    _|_|_|    _|_|      _|_|_|    _|_|_|  _|  _|_|  │"
echo "│_|        _|    _|  _|_|_|_|  _|_|      _|    _|  _|_|      │"
echo "│_|        _|    _|  _|            _|_|  _|    _|  _|        │"
echo "│  _|_|_|    _|_|_|    _|_|_|  _|_|_|      _|_|_|  _|        │"
echo "│           by:ahmed;GitHub:github.com/ahmedmahmed8a         │"
echo "│           WA:+201150119895;                                │"
echo "└────────────────────────────────────────────────────────────┘"
echo ;echo;
if [[ -z $1 ]]; then
    #statements
    if [[ -z $(cat <&0<<'eof') ]]; then
        #statements
        read -p "text to encode/decode > " stdin
    else
        stdin=$(cat <&0)
    fi
else
    stdin=$1
fi

o1=$(echo $stdin|tr [a-z] [b-za-a]|tr [A-Z] [B-ZA-A])
o2=$(echo $stdin|tr [a-z] [c-za-b]|tr [A-Z] [B-ZA-A])
o3=$(echo $stdin|tr [a-z] [d-za-c]|tr [A-Z] [B-ZA-A])
o4=$(echo $stdin|tr [a-z] [e-za-d]|tr [A-Z] [B-ZA-A])
o5=$(echo $stdin|tr [a-z] [f-za-e]|tr [A-Z] [B-ZA-A])
o6=$(echo $stdin|tr [a-z] [g-za-f]|tr [A-Z] [B-ZA-A])
o7=$(echo $stdin|tr [a-z] [h-za-g]|tr [A-Z] [B-ZA-A])
o8=$(echo $stdin|tr [a-z] [i-za-h]|tr [A-Z] [B-ZA-A])
o9=$(echo $stdin|tr [a-z] [j-za-i]|tr [A-Z] [B-ZA-A])
o10=$(echo $stdin|tr [a-z] [k-za-j]|tr [A-Z] [B-ZA-A])
o11=$(echo $stdin|tr [a-z] [l-za-k]|tr [A-Z] [B-ZA-A])
o12=$(echo $stdin|tr [a-z] [m-za-l]|tr [A-Z] [B-ZA-A])
o13=$(echo $stdin|tr [a-z] [n-za-m]|tr [A-Z] [B-ZA-A])
o14=$(echo $stdin|tr [a-z] [o-za-n]|tr [A-Z] [B-ZA-A])
o15=$(echo $stdin|tr [a-z] [p-za-o]|tr [A-Z] [B-ZA-A])
o16=$(echo $stdin|tr [a-z] [q-za-p]|tr [A-Z] [B-ZA-A])
o17=$(echo $stdin|tr [a-z] [r-za-q]|tr [A-Z] [B-ZA-A])
o18=$(echo $stdin|tr [a-z] [s-za-r]|tr [A-Z] [B-ZA-A])
o19=$(echo $stdin|tr [a-z] [t-za-s]|tr [A-Z] [B-ZA-A])
o20=$(echo $stdin|tr [a-z] [u-za-t]|tr [A-Z] [B-ZA-A])
o21=$(echo $stdin|tr [a-z] [v-za-u]|tr [A-Z] [B-ZA-A])
o22=$(echo $stdin|tr [a-z] [w-za-v]|tr [A-Z] [B-ZA-A])
o23=$(echo $stdin|tr [a-z] [x-za-w]|tr [A-Z] [B-ZA-A])
o24=$(echo $stdin|tr [a-z] [y-za-x]|tr [A-Z] [B-ZA-A])

echo -e $green
head -c $c /dev/zero | tr '\0' '_'
echo -e $red "Offset 1:" $y$o1| fmt -c -w $COLUMNS
head -c $c /dev/zero | tr '\0' '_'
echo -e $red "Offset 2:" $y$o2
head -c $c /dev/zero | tr '\0' '_'
echo -e $red "Offset 3:" $y$o3
head -c $c /dev/zero | tr '\0' '_'
echo -e $red "Offset 4:" $y$o4
head -c $c /dev/zero | tr '\0' '_'
echo -e $red "Offset 5:" $y$o5
head -c $c /dev/zero | tr '\0' '_'
echo -e $red "Offset 6:" $y$o6
head -c $c /dev/zero | tr '\0' '_'
echo -e $red "Offset 7:" $y$o7
head -c $c /dev/zero | tr '\0' '_'
echo -e $red "Offset 8:" $y$o8
head -c $c /dev/zero | tr '\0' '_'
echo -e $red "Offset 9:" $y$o9
head -c $c /dev/zero | tr '\0' '_'
echo -e $red "Offset 10:" $y$o10
head -c $c /dev/zero | tr '\0' '_'
echo -e $red "Offset 11:" $y$o11
head -c $c /dev/zero | tr '\0' '_'
echo -e $red "Offset 12:" $y$o12
head -c $c /dev/zero | tr '\0' '_'
echo -e $red "Offset 13:" $y$o13
head -c $c /dev/zero | tr '\0' '_'
echo -e $red "Offset 14:" $y$o14
head -c $c /dev/zero | tr '\0' '_'
echo -e $red "Offset 15:" $y$o15
head -c $c /dev/zero | tr '\0' '_'
echo -e $red "Offset 16:" $y$o16
head -c $c /dev/zero | tr '\0' '_'
echo -e $red "Offset 17:" $y$o17
head -c $c /dev/zero | tr '\0' '_'
echo -e $red "Offset 18:" $y$o18
head -c $c /dev/zero | tr '\0' '_'
echo -e $red "Offset 19:" $y$o19
head -c $c /dev/zero | tr '\0' '_'
echo -e $red "Offset 20:" $y$o20
head -c $c /dev/zero | tr '\0' '_'
echo -e $red "Offset 21:" $y$o21
head -c $c /dev/zero | tr '\0' '_'
echo -e $red "Offset 22:" $y$o22
head -c $c /dev/zero | tr '\0' '_'
echo -e $red "Offset 23:" $y$o23
head -c $c /dev/zero | tr '\0' '_'
echo -e $red "Offset 24:" $y$o24
head -c $c /dev/zero | tr '\0' '_'