#!/bin/bash
# $IFS ´Â °ø¹é¹®ÀÚ¸¦ ´Ù¸¥ ¹®ÀÚµé°ú ´Ù¸£°Ô ó¸®ÇÕ´Ï´Ù.

output_args_one_per_line()
{
  for arg
  do echo "[$arg]"
  done
}

echo; echo "IFS=\" \""
echo "-------"

IFS=" "
var=" a  b c   "
output_args_one_per_line $var  # output_args_one_per_line `echo " a  b c   "`
#
# [a]
# [b]
# [c]


echo; echo "IFS=:"
echo "-----"

IFS=:
var=":a::b:c:::"               # À§¿Í °°Áö¸¸ ":" ¸¦ " "·Î ¹Ù²ãÁÝ´Ï´Ù.
output_args_one_per_line $var
#
# []
# [a]
# []
# [b]
# [c]
# []
# []
# []

# awk ÀÇ "FS" ÇÊµå ±¸ºÐÀÚµµ À§¿Í °°Àº µ¿ÀÛÀ» ÇÕ´Ï´Ù.

# Thank you, Stephane Chazelas.

echo

exit 0