#!/bin/bash
# bin-grep.sh: ÀÌÁø ÆÄÀÏ¿¡¼­ ÀÏÄ¡ÇÏ´Â ¹®ÀÚ¿­ ã¾Æ³»±â.

# "grep"À» ÀÌÁø ÆÄÀÏ¿¡ °É±â.
# "grep -a"¶ó°í Çصµ ºñ½ÁÇÕ´Ï´Ù.

E_BADARGS=65
E_NOFILE=66

if [ $# -ne 2 ]
then
  echo "»ç¿ë¹ý: `basename $0` string filename"
  exit $E_BADARGS
fi

if [ ! -f "$2" ]
then
  echo "\"$2\" Àº Á¸ÀçÇÏÁö ¾Ê´Â ÆÄÀÏÀÔ´Ï´Ù."
  exit $E_NOFILE
fi  


for word in $( strings "$2" | grep "$1" )
# "strings" ¸í·É¾î´Â ÀÌÁø ÆÄÀÏ¿¡ µé¾î ÀÖ´Â ¹®ÀÚ¿­µéÀ» º¸¿©ÁÖ°í,
# ±× Ãâ·ÂÀ» "grep"¿¡ ÆÄÀÌÇÁ·Î °É¾î ¿øÇÏ´Â ¹®ÀÚ¿­À» ã¾Æ³À´Ï´Ù.
do
  echo $word
done

# S.C. °¡ À§ÀÇ for ·çÇÁ´Â ´ÙÀ½°ú °°ÀÌ ´õ °£´ÜÇÏ°Ô ÇÒ ¼ö ÀÖ´Ù°í ÁöÀûÇØ ÁÖ¾ú½À´Ï´Ù.
#    strings "$2" | grep "$1" | tr -s "$IFS" '[\n*]'


# "./bin-grep.sh mem /bin/ls"  °°Àº ½ÄÀ¸·Î Çؼ­ ÀÌ ½ºÅ©¸³Æ®¸¦ ¿¬½ÀÇØ º¸¼¼¿ä.

exit 0