#!/bin/bash
# lookup: µ¥ÀÌŸ ÆÄÀÏ¿¡ µé¾î ÀÖ´Â ¸ðµç ³¹¸»µé¿¡ ´ëÇؼ­ »çÀü °Ë»öÀ» ¼öÇà.

file=words.data  # Å×½ºÆ®¿ë ³¹¸»µéÀÌ µé¾î ÀÖ´Â µ¥ÀÌŸ ÆÄÀÏ.

echo

while [ "$word" != end ]  # µ¥ÀÌŸ ÆÄÀÏÀÇ ¸¶Áö¸· ³¹¸».
do
  read word      # ·çÇÁÀÇ ³¡¿¡¼­ ÀçÁöÇâÀ» °É¾ú±â ¶§¹®¿¡ µ¥ÀÌŸ ÆÄÀÏ¿¡¼­ ÀÐÀ½.
  look $word > /dev/null  # »çÀü ÆÄÀÏÀÇ °á°ú¸¦ Ç¥½ÃÇÏÁö ¾ÊÀ½.
  lookup=$?      # 'look' ¸í·É¾îÀÇ Á¾·á »óÅÂ.

  if [ "$lookup" -eq 0 ]
  then
    echo "\"$word\" ´Â À¯È¿ÇÔ."
  else
    echo "\"$word\" ´Â À¯È¿ÇÏÁö ¾ÊÀ½."
  fi  

done <"$file"    # Ç¥ÁØÀÔ·ÂÀ» $file·Î ÀçÁöÇâ Çϱ⠶§¹®¿¡ $file¿¡¼­ "ÀÐÀ½".

echo

exit 0

# ----------------------------------------------------------------
# À§ÀÇ "exit" ¸í·É¾î ¶§¹®¿¡ ´ÙÀ½ ÄÚµå´Â ½ÇÇàµÇÁö ¾Ê½À´Ï´Ù.


# Stephane Chazelas °¡ ´õ °£°áÇÑ ´ÙÀ½ Äڵ带 Á¦¾ÈÇØ ÁÖ¾ú½À´Ï´Ù:

while read word && [[ $word != end ]]
do if look "$word" > /dev/null
   then echo "\"$word\" ´Â À¯È¿ÇÔ."
   else echo "\"$word\" ´Â À¯È¿ÇÏÁö ¾ÊÀ½."
   fi
done <"$file"

exit 0