1. timestamp ๊ฐ์ผ๋ก ์ํ๋ ๋ ์ง ํํ๋ก ๋ณํํ๊ธฐ $ date -d '1970-01-01 1676360315 sec' 2023. 02. 14. (ํ) 07:38:35 KST $ date -d '1970-01-01 1676360315 sec' +'%Y-%m-%d %H:%M:%S' 2023-02-14 07:38:35 * ๊ฒฐ๊ณผ๋ ์์คํ Timezone์ ๋ง์ถฐ์ ํ์๋จ 2. ๋ ์ง ํ์์ผ๋ก timestamp ๊ฐ ๊ตฌํ๊ธฐ (1๋ฒ๊ณผ ๋ฐ๋) $ date -d '2022-02-14' +%s 1644764400