#!/bin/bash

echo

if test -z "$1"
then
  echo "¸í·É¾îÁÙ ÀÎÀÚ°¡ ¾ø½À´Ï´Ù."
else
  echo "ù¹ø° ¸í·É¾îÁÙ ÀÎÀÚ´Â $1 ÀÔ´Ï´Ù."
fi


if [ -z "$1" ]    # À§ÀÇ ÄÚµå ºí·°°ú ±â´ÉÀûÀ¸·Î µ¿ÀÏÇÕ´Ï´Ù.
#   if [ -z "$1"   ¶ó°í Çصµ µ¿ÀÛÇÏ°ÚÁö¸¸...
#+  Bash ´Â ¿À¸¥ÂÊ ´ë°ýÈ£°¡ ºüÁ³´Ù°í ¿¡·¯ ¸Þ¼¼Áö¸¦ ³À´Ï´Ù.
then
  echo "¸í·É¾îÁÙ ÀÎÀÚ°¡ ¾ø½À´Ï´Ù."
else
  echo "ù¹ø° ¸í·É¾îÁÙ ÀÎÀÚ´Â $1 ÀÔ´Ï´Ù."
fi

echo

exit 0