#!/bin/bash

echo

let a=11          # 'a=11' °ú ¶È°°½À´Ï´Ù.
let a=a+5         # let "a = a + 5" ¿Í ¶È°°½À´Ï´Ù.
                  # (Å«µû¿ÈÇ¥¿Í ºó Ä­À» ¾²¸é Á» ´õ ÀбⰡ ÆíÇÏÁÒ)
echo "11 + 5 = $a"

let "a <<= 3"     # let "a = a << 3" °ú ¶È°°½À´Ï´Ù.
echo "\"\$a\" (=16) ¸¦ 3 ¹ø ¿ÞÂÊ ½¬ÇÁÆ® = $a"

let "a /= 4"      # let "a = a / 4" ¿Í ¶È°°½À´Ï´Ù.
echo "128 / 4 = $a"

let "a -= 5"      # let "a = a - 5" ¿Í ¶È°°½À´Ï´Ù.
echo "32 - 5 = $a"

let "a = a * 10"  # let "a = a * 10" °ú ¶È°°½À´Ï´Ù.
echo "27 * 10 = $a"

let "a %= 8"      # let "a = a % 8" °ú ¶È°°½À´Ï´Ù.
echo "270 modulo 8 = $a  (270 / 8 = 33, ³ª¸ÓÁö´Â $a)"

echo

exit 0