#!/bin/bash
# "and list"

if [ ! -z "$1" ] && echo "ù¹ø° ÀÎÀÚ = $1" && [ ! -z "$2" ] && echo "µÎ¹ø° ÀÎÀÚ = $2"
then
  echo "µÎ °³ ÀÌ»óÀÇ ÀÎÀÚ°¡ ³Ñ¾î¿Ô½À´Ï´Ù."
  # ¸ðµç ¸í·É¾î »ç½½ÀÌ ÂüÀ» ¸®ÅÏÇßÀ» °æ¿ì.
else
  echo "µÎ °³ ¹Ì¸¸ÀÇ ÀÎÀÚ°¡ ³Ñ¾î¿Ô½À´Ï´Ù."
  # ¸í·É¾î »ç½½Áß ÃÖ¼Ò Çϳª°¡ °ÅÁþÀ» ¸®ÅÏ.
fi  
# ÁÖÀÇÇÒ °Ô Çϳª ÀÖ½À´Ï´Ù.
# if [ ! -z $1 ] ´Â Àß µÇÁö¸¸ ¶È°°À» °Í °°Àº
# if [ -n $1 ] ´Â Àß ¾È µË´Ï´Ù. 
# ÇÏÁö¸¸ 
#  if [ -n "$1" ] 
# ó·³ Äõ¿ìÆ®¸¦ °É¸é µË´Ï´Ù. Á¶½ÉÇؼ­ ¾²¼¼¿ä!
# Å×½ºÆ®¿¡¼­ ¾²ÀÌ´Â º¯¼ö´Â Ç×»ó Äõ¿ìÆ®¸¦ Çؼ­ ¾²¼¼¿ä.


# "¼ø¼öÇÑ" if/then ¹®À» ½á¼­ ¶È°°Àº ÀÏÀ» ÇÕ´Ï´Ù.
if [ ! -z "$1" ]
then
  echo "ù¹ø° ÀÎÀÚ = $1"
fi
if [ ! -z "$2" ]
then
  echo "µÎ¹ø° ÀÎÀÚ = $2"
  echo "µÎ °³ ÀÌ»óÀÇ ÀÎÀÚ°¡ ³Ñ¾î¿Ô½À´Ï´Ù."
else
  echo "µÎ °³ ¹Ì¸¸ÀÇ ÀÎÀÚ°¡ ³Ñ¾î¿Ô½À´Ï´Ù."
fi
# ÀÌ ¹æ¹ýÀº "and list"¸¦ ¾²´Â °Íº¸´Ù ´õ ±æ°í ´ú ¼¼·ÃµÅ º¸ÀÔ´Ï´Ù.


exit 0