원문 http://guileschool.com/2022/09/01/2022-09-01-Reasons-for-using-IFS-$quotes-in-shell-scripts/
질문사항 쉘스크립트에서 IFS=$’\n’ 는 어떤 목적을 가지고 있나요?
# 실제 변수에 저장되는 문자열이 다르다
bash-5.1$ F="\n"
bash-5.1$ echo -n "$F" | hexdump -C
00000000 5c 6e |\n|
00000002
bash-5.1$ F='\n'
bash-5.1$ echo -n "$F" | hexdump -C
00000000 5c 6e |\n|
00000002
bash-5.1$ F=$'\n'
bash-5.1$ echo -n "$F" | hexdump -C
00000000 0a |.|
00000001
bash-5.1$