Linux https://joone.net/2018/09/27/26-리눅스-이야기-리누스-토발즈의-어린시절/ https://joone.net/2018/10/22/27-리눅스-이야기-나만의-터미널-프로그램/ https://joone.net/2018/12/02/28-리눅스-이야기-운영체제를-만들자/ http://www.ddanzi.com/ddanziNews/200047221 https://github.com/zavg/linux-0.01 Unix http://www.ddanzi.com/ddanziNews/92939697