#!/bin/bash# $IFS treats whitespace differently than other characters.output_args_one_per_line(){  for arg  do echo "[$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:::"               # Same as above, but substitute ":" for " ".output_args_one_per_line $var## []# [a]# []# [b]# [c]# []# []# []# The same thing happens with the "FS" field separator in awk.# Thank you, Stephane Chazelas.echoexit 0