ASCII to HEX alphabet and numbers

hexalphabet.sh

#!/bin/bash

echo "ASCII to HEX alphabet"

letters () {
	A=0x41
	B=0x42
	C=0x43
	D=0x44
	E=0x45
	F=0x46
	G=0x47
	H=0x48
	I=0x49
	J=0x4A
	K=0x4B
	L=0x4C
	M=0x4D
	N=0x4E
	O=0x4F
	P=0x50
	Q=0x51
	R=0x52
	S=0x53
	T=0x54
	U=0x55
	V=0x56
	W=0x57
	X=0x58
	Y=0x59
	Z=0x5A

	linebr="0x0A"
	space="20"

	echo $A $B $C $D $E $F $G $H $I $J $K $L $M $N $O $P $Q $R $S $T $U $V $W $X $Y $Z
	echo "Line break :"
	echo $linebr
	echo "Space :"
	echo $20
}

numbers () {
	n1=0x31
	n2=0x32
	n3=0x33
	n4=0x34
	n5=0x35
	n6=0x36
	n7=0x37
	n8=0x38
	n9=0x39
	n0=0x30

	echo $n1 $n2 $n3 $n4 $n5 $n6 $n7 $n8 $n9 $n0

	echo "Note : 12 is 31 32. 1 then 2. This a rule."
}

echo "[L]etters OR [N]umbers"
read type

if [ $type = 'L' ]; then
	letters
elif [ $type = 'N' ]; then
	numbers
else
	echo "[L] or [N]."
fi