{"id":1911,"date":"2025-10-02T18:30:00","date_gmt":"2025-10-02T09:30:00","guid":{"rendered":"https:\/\/seuheu.com\/?p=1911"},"modified":"2025-10-15T19:14:36","modified_gmt":"2025-10-15T10:14:36","slug":"linux-rocky-linux-9-5-%eb%a6%ac%eb%88%85%ec%8a%a4-%ec%8b%9c%ea%b0%84-%ea%b4%80%eb%a6%ac-%ec%9e%85%eb%ac%b8-%ed%95%98%eb%93%9c%ec%9b%a8%ec%96%b4rtc%ec%99%80-%ec%8b%9c%ec%8a%a4%ed%85%9cos","status":"publish","type":"post","link":"https:\/\/seuheu.com\/?p=1911","title":{"rendered":"[Linux] Rocky Linux 9.5 \ub9ac\ub205\uc2a4 \uc2dc\uac04 \uad00\ub9ac \uc785\ubb38: \ud558\ub4dc\uc6e8\uc5b4(RTC)\uc640 \uc2dc\uc2a4\ud15c(OS) \uc2dc\uac04 \uac1c\ub150\ubd80\ud130 \ub3d9\uae30\ud654\uae4c\uc9c0"},"content":{"rendered":"\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"[Linux] Rocky Linux 9.5 \ub9ac\ub205\uc2a4 \uc2dc\uac04 \uad00\ub9ac \uc785\ubb38: \ud558\ub4dc\uc6e8\uc5b4(RTC)\uc640 \uc2dc\uc2a4\ud15c(OS) \uc2dc\uac04 \uac1c\ub150\ubd80\ud130 \ub3d9\uae30\ud654\uae4c\uc9c0\" width=\"1200\" height=\"675\" src=\"https:\/\/www.youtube.com\/embed\/pt9qhawl8LY?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<p><br><div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\ubaa9\ucc28<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"\ubaa9\ucc28 \ud1a0\uae00\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/seuheu.com\/?p=1911\/#1_%EA%B0%9C%EC%9A%94\" >1. \uac1c\uc694<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/seuheu.com\/?p=1911\/#2_%EB%B2%84%EC%A0%84\" >2. \ubc84\uc804<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/seuheu.com\/?p=1911\/#3_%EC%84%A4%EB%AA%85\" >3. \uc124\uba85<\/a><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/seuheu.com\/?p=1911\/#3-1_%ED%95%98%EB%93%9C%EC%9B%A8%EC%96%B4_%EC%8B%9C%EA%B0%84_RTC_Real-Time_Clock\" >3-1. \ud558\ub4dc\uc6e8\uc5b4 \uc2dc\uac04 (RTC, Real-Time Clock)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/seuheu.com\/?p=1911\/#3-2_%EC%8B%9C%EC%8A%A4%ED%85%9C_%EC%8B%9C%EA%B0%84_OS_Time\" >3-2. \uc2dc\uc2a4\ud15c \uc2dc\uac04 (OS Time)<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/seuheu.com\/?p=1911\/#4_%EC%8B%9C%EA%B0%84_%ED%99%95%EC%9D%B8\" >4. \uc2dc\uac04 \ud655\uc778<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/seuheu.com\/?p=1911\/#4-1_%ED%95%98%EB%93%9C%EC%9B%A8%EC%96%B4RTC_%EC%8B%9C%EA%B0%84_%ED%99%95%EC%9D%B8\" >4-1. \ud558\ub4dc\uc6e8\uc5b4(RTC) \uc2dc\uac04 \ud655\uc778<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/seuheu.com\/?p=1911\/#4-2_%EC%8B%9C%EC%8A%A4%ED%85%9COS_%EC%8B%9C%EA%B0%84_%ED%99%95%EC%9D%B8\" >4-2. \uc2dc\uc2a4\ud15c(OS) \uc2dc\uac04 \ud655\uc778<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/seuheu.com\/?p=1911\/#5_%EC%8B%9C%EC%8A%A4%ED%85%9COS_%EC%8B%9C%EA%B0%84\" >5. \uc2dc\uc2a4\ud15c(OS) \uc2dc\uac04<\/a><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/seuheu.com\/?p=1911\/#5-1_%EC%8B%9C%EC%8A%A4%ED%85%9COS_%EC%8B%9C%EA%B0%84_%EB%B3%80%EA%B2%BD\" >5-1. \uc2dc\uc2a4\ud15c(OS) \uc2dc\uac04 \ubcc0\uacbd<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/seuheu.com\/?p=1911\/#5-2_%EC%8B%9C%EC%8A%A4%ED%85%9COS_%EC%8B%9C%EA%B0%84_%EB%B3%80%EA%B2%BD_%ED%99%95%EC%9D%B8\" >5-2. \uc2dc\uc2a4\ud15c(OS) \uc2dc\uac04 \ubcc0\uacbd \ud655\uc778<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/seuheu.com\/?p=1911\/#5-3_%EC%8B%9C%EC%8A%A4%ED%85%9COS_%EC%8B%9C%EA%B0%84_%E2%86%92_%ED%95%98%EB%93%9C%EC%9B%A8%EC%96%B4RTC_%EC%8B%9C%EA%B0%84_%EB%8F%99%EA%B8%B0%ED%99%94\" >5-3. \uc2dc\uc2a4\ud15c(OS) \uc2dc\uac04 \u2192 \ud558\ub4dc\uc6e8\uc5b4(RTC) \uc2dc\uac04 \ub3d9\uae30\ud654<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/seuheu.com\/?p=1911\/#5-4_%EC%8B%9C%EC%8A%A4%ED%85%9COS_%EC%8B%9C%EA%B0%84_%E2%86%92_%ED%95%98%EB%93%9C%EC%9B%A8%EC%96%B4RTC_%EC%8B%9C%EA%B0%84_%EB%8F%99%EA%B8%B0%ED%99%94_%ED%99%95%EC%9D%B8\" >5-4. \uc2dc\uc2a4\ud15c(OS) \uc2dc\uac04 \u2192 \ud558\ub4dc\uc6e8\uc5b4(RTC) \uc2dc\uac04 \ub3d9\uae30\ud654 \ud655\uc778<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/seuheu.com\/?p=1911\/#6_%ED%95%98%EB%93%9C%EC%9B%A8%EC%96%B4RTC_%EC%8B%9C%EA%B0%84\" >6. \ud558\ub4dc\uc6e8\uc5b4(RTC) \uc2dc\uac04<\/a><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/seuheu.com\/?p=1911\/#6-1_%ED%95%98%EB%93%9C%EC%9B%A8%EC%96%B4RTC_%EC%8B%9C%EA%B0%84_%EB%B3%80%EA%B2%BD\" >6-1. \ud558\ub4dc\uc6e8\uc5b4(RTC) \uc2dc\uac04 \ubcc0\uacbd<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/seuheu.com\/?p=1911\/#6-2_%ED%95%98%EB%93%9C%EC%9B%A8%EC%96%B4RTC_%EC%8B%9C%EA%B0%84_%EB%B3%80%EA%B2%BD_%ED%99%95%EC%9D%B8\" >6-2. \ud558\ub4dc\uc6e8\uc5b4(RTC) \uc2dc\uac04 \ubcc0\uacbd \ud655\uc778<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/seuheu.com\/?p=1911\/#6-3_%ED%95%98%EB%93%9C%EC%9B%A8%EC%96%B4RTC_%EC%8B%9C%EA%B0%84_%E2%86%92_%EC%8B%9C%EC%8A%A4%ED%85%9COS_%EC%8B%9C%EA%B0%84_%EB%8F%99%EA%B8%B0%ED%99%94\" >6-3. \ud558\ub4dc\uc6e8\uc5b4(RTC) \uc2dc\uac04 \u2192 \uc2dc\uc2a4\ud15c(OS) \uc2dc\uac04 \ub3d9\uae30\ud654<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/seuheu.com\/?p=1911\/#6-4_%ED%95%98%EB%93%9C%EC%9B%A8%EC%96%B4RTC_%EC%8B%9C%EA%B0%84_%E2%86%92_%EC%8B%9C%EC%8A%A4%ED%85%9COS_%EC%8B%9C%EA%B0%84_%EB%8F%99%EA%B8%B0%ED%99%94_%ED%99%95%EC%9D%B8\" >6-4. \ud558\ub4dc\uc6e8\uc5b4(RTC) \uc2dc\uac04 \u2192 \uc2dc\uc2a4\ud15c(OS) \uc2dc\uac04 \ub3d9\uae30\ud654 \ud655\uc778<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<br><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h1 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_%EA%B0%9C%EC%9A%94\"><\/span>1. \uac1c\uc694<span class=\"ez-toc-section-end\"><\/span><\/h1>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ub9ac\ub205\uc2a4 \uc11c\ubc84\uc5d0\uc11c\ub294&nbsp;<strong>\uc2dc\uc2a4\ud15c \uc2dc\uac04(OS \uc2dc\uac04)<\/strong>&nbsp;\uacfc&nbsp;<strong>\ud558\ub4dc\uc6e8\uc5b4 \uc2dc\uac04(RTC, Real-Time Clock)<\/strong>&nbsp;\uc744 \ubaa8\ub450 \uad00\ub9ac\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n\n\n\n<li>\uc6b4\uc601\uccb4\uc81c\uc758 \uc2dc\uac04\uacfc \ud558\ub4dc\uc6e8\uc5b4 \uc2dc\uac04\uc774 \ub2e4\ub974\uba74 \ub85c\uadf8 \uae30\ub85d, \ud074\ub7ec\uc2a4\ud130 \ub3d9\uae30\ud654, \uc778\uc99d \ubb38\uc81c \ub4f1\uc774 \ubc1c\uc0dd\ud560 \uc218 \uc788\uc73c\ubbc0\ub85c \ub450 \uc2dc\uac04\uc744 \uc77c\uce58\uc2dc\ucf1c \uc8fc\ub294 \uac83\uc774 \uc911\uc694\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li>\uc774\ubc88 \uae00\uc5d0\uc11c\ub294&nbsp;<code>date<\/code>&nbsp;\uc640&nbsp;<code>hwclock<\/code>&nbsp;\uba85\ub839\uc5b4\ub97c \ud65c\uc6a9\ud558\uc5ec&nbsp;<strong>\uc2dc\uc2a4\ud15c \uc2dc\uac04\uacfc \ud558\ub4dc\uc6e8\uc5b4 \uc2dc\uac04 \ud655\uc778 \ubc0f \ub3d9\uae30\ud654 \ubc29\ubc95<\/strong>\uc744 \uc815\ub9ac\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n\n<p><br><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h1 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_%EB%B2%84%EC%A0%84\"><\/span>2. \ubc84\uc804<span class=\"ez-toc-section-end\"><\/span><\/h1>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Rocky Linux 9.5<\/li>\n<\/ul>\n\n\n\n<p><br><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h1 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_%EC%84%A4%EB%AA%85\"><\/span>3. \uc124\uba85<span class=\"ez-toc-section-end\"><\/span><\/h1>\n\n\n\n<p><br><br><br><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3-1_%ED%95%98%EB%93%9C%EC%9B%A8%EC%96%B4_%EC%8B%9C%EA%B0%84_RTC_Real-Time_Clock\"><\/span>3-1. \ud558\ub4dc\uc6e8\uc5b4 \uc2dc\uac04 (RTC, Real-Time Clock)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\uc815\uc758<\/strong>\n<ul class=\"wp-block-list\">\n<li>\ud558\ub4dc\uc6e8\uc5b4 \uc2dc\uac04\uc740&nbsp;<strong>\uba54\uc778\ubcf4\ub4dc\uc5d0 \ub0b4\uc7a5\ub41c \ubc30\ud130\ub9ac(CMOS \ubc30\ud130\ub9ac)<\/strong>&nbsp;\ub97c \ud1b5\ud574 \uc720\uc9c0\ub418\ub294 \uc2dc\uacc4\uc785\ub2c8\ub2e4.<\/li>\n\n\n\n<li>\uc11c\ubc84\ub098 PC\uc758 \uc804\uc6d0\uc774 \uaebc\uc838 \uc788\ub354\ub77c\ub3c4 \ubc30\ud130\ub9ac \ub355\ubd84\uc5d0 \uc2dc\uac04\uc774 \uacc4\uc18d \uc720\uc9c0\ub418\uba70, BIOS\/UEFI \ud658\uacbd\uc5d0\uc11c \uc9c1\uc811 \ud655\uc778\ud558\uc2e4 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\ud2b9\uc9d5<\/strong>\n<ul class=\"wp-block-list\">\n<li>\uc804\uc6d0\uc774 \uaebc\uc838 \uc788\uc5b4\ub3c4 \uc2dc\uac04\uc774 \uc720\uc9c0\ub429\ub2c8\ub2e4.<\/li>\n\n\n\n<li>BIOS\/UEFI \ub2e8\uacc4\uc5d0\uc11c \uc9c1\uc811 \ud655\uc778 \ubc0f \uc124\uc815\uc774 \uac00\ub2a5\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li>\uc77c\ubc18\uc801\uc73c\ub85c&nbsp;<strong>UTC(\uad6d\uc81c \ud45c\uc900\uc2dc)<\/strong>&nbsp;\uae30\uc900\uc73c\ub85c \ub9de\ucd94\uc2dc\ub294 \uac83\uc744 \uad8c\uc7a5\ub4dc\ub9bd\ub2c8\ub2e4.<\/li>\n\n\n\n<li><code>hwclock<\/code>&nbsp;\uba85\ub839\uc5b4\ub97c \uc0ac\uc6a9\ud558\uc5ec \ud655\uc778 \ubc0f \ubcc0\uacbd\uc774 \uac00\ub2a5\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p><br><br><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3-2_%EC%8B%9C%EC%8A%A4%ED%85%9C_%EC%8B%9C%EA%B0%84_OS_Time\"><\/span>3-2. \uc2dc\uc2a4\ud15c \uc2dc\uac04 (OS Time)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\uc815\uc758<\/strong>\n<ul class=\"wp-block-list\">\n<li>\uc2dc\uc2a4\ud15c \uc2dc\uac04\uc740&nbsp;<strong>\uc6b4\uc601\uccb4\uc81c\uac00 \uc2e4\ud589\ub420 \ub54c \uba54\ubaa8\ub9ac\uc5d0 \ub85c\ub4dc\ub418\uc5b4 \ub3d9\uc791\ud558\ub294 \uc2dc\uacc4<\/strong>\ub97c \uc758\ubbf8\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li>\uc11c\ubc84\uac00 \ubd80\ud305\ub420 \ub54c RTC \uac12\uc744 \ubd88\ub7ec\uc640 \ucd08\uae30\ud654\ub418\uba70, \uc774\ud6c4\uc5d0\ub294 \uc6b4\uc601\uccb4\uc81c\uac00 \uc790\uccb4\uc801\uc73c\ub85c \uc2dc\uac04\uc744 \uad00\ub9ac\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\ud2b9\uc9d5<\/strong>\n<ul class=\"wp-block-list\">\n<li>\uc6b4\uc601\uccb4\uc81c\uc5d0\uc11c \ubaa8\ub4e0 \uc560\ud50c\ub9ac\ucf00\uc774\uc158, \ub85c\uadf8, \ud504\ub85c\uc138\uc2a4\uac00 \ucc38\uc870\ud558\ub294 \uae30\uc900 \uc2dc\uac04\uc774 \ub429\ub2c8\ub2e4.<\/li>\n\n\n\n<li>OS \ubd80\ud305 \uc2dc RTC \uac12\uc744 \ubd88\ub7ec\uc640 \ucd08\uae30\ud654\ub418\uc9c0\ub9cc, \uc774\ud6c4\uc5d0\ub294 RTC\uc640 \ubcc4\uac1c\ub85c \ub3d9\uc791\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li><code>date<\/code>&nbsp;\uba85\ub839\uc5b4\ub098&nbsp;<code>timedatectl<\/code>&nbsp;\uba85\ub839\uc5b4\ub97c \ud1b5\ud574 \ud655\uc778 \ubc0f \ubcc0\uacbd\uc774 \uac00\ub2a5\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li>NTP(Network Time Protocol) \ub3d9\uae30\ud654\ub97c \ud1b5\ud574 \ub124\ud2b8\uc6cc\ud06c \ud45c\uc900 \uc2dc\uac04\uacfc \ub9de\ucd94\uc2e4 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p><br><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h1 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4_%EC%8B%9C%EA%B0%84_%ED%99%95%EC%9D%B8\"><\/span>4. \uc2dc\uac04 \ud655\uc778<span class=\"ez-toc-section-end\"><\/span><\/h1>\n\n\n\n<p><br><br><br><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4-1_%ED%95%98%EB%93%9C%EC%9B%A8%EC%96%B4RTC_%EC%8B%9C%EA%B0%84_%ED%99%95%EC%9D%B8\"><\/span>4-1. \ud558\ub4dc\uc6e8\uc5b4(RTC) \uc2dc\uac04 \ud655\uc778<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code># hwclock<\/code><\/pre>\n\n\n\n<p><br><\/p>\n\n\n\n<p>\ucd9c\ub825 \uc608\uc2dc:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>2025-09-27 08:09:45.933274+09:00<\/code><\/pre>\n\n\n\n<p><br><br><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4-2_%EC%8B%9C%EC%8A%A4%ED%85%9COS_%EC%8B%9C%EA%B0%84_%ED%99%95%EC%9D%B8\"><\/span>4-2. \uc2dc\uc2a4\ud15c(OS) \uc2dc\uac04 \ud655\uc778<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code># date<\/code><\/pre>\n\n\n\n<p><br><\/p>\n\n\n\n<p>\ucd9c\ub825 \uc608\uc2dc:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Sat Sep 27 08:09:57 AM KST 2025<\/code><\/pre>\n\n\n\n<p><br><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h1 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5_%EC%8B%9C%EC%8A%A4%ED%85%9COS_%EC%8B%9C%EA%B0%84\"><\/span>5. \uc2dc\uc2a4\ud15c(OS) \uc2dc\uac04<span class=\"ez-toc-section-end\"><\/span><\/h1>\n\n\n\n<p><br><br><br><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5-1_%EC%8B%9C%EC%8A%A4%ED%85%9COS_%EC%8B%9C%EA%B0%84_%EB%B3%80%EA%B2%BD\"><\/span>5-1. \uc2dc\uc2a4\ud15c(OS) \uc2dc\uac04 \ubcc0\uacbd<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code># date -s \"2025-09-27 12:00:00\"<\/code><\/pre>\n\n\n\n<p><br><br><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5-2_%EC%8B%9C%EC%8A%A4%ED%85%9COS_%EC%8B%9C%EA%B0%84_%EB%B3%80%EA%B2%BD_%ED%99%95%EC%9D%B8\"><\/span>5-2. \uc2dc\uc2a4\ud15c(OS) \uc2dc\uac04 \ubcc0\uacbd \ud655\uc778<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code># date<\/code><\/pre>\n\n\n\n<p><br><\/p>\n\n\n\n<p>\ucd9c\ub825 \uc608\uc2dc:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Sat Sep 27 12:00:01 PM KST 2025<\/code><\/pre>\n\n\n\n<p><br><br><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5-3_%EC%8B%9C%EC%8A%A4%ED%85%9COS_%EC%8B%9C%EA%B0%84_%E2%86%92_%ED%95%98%EB%93%9C%EC%9B%A8%EC%96%B4RTC_%EC%8B%9C%EA%B0%84_%EB%8F%99%EA%B8%B0%ED%99%94\"><\/span>5-3. \uc2dc\uc2a4\ud15c(OS) \uc2dc\uac04 \u2192 \ud558\ub4dc\uc6e8\uc5b4(RTC) \uc2dc\uac04 \ub3d9\uae30\ud654<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code># hwclock --systohc<\/code><\/pre>\n\n\n\n<p><br><br><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5-4_%EC%8B%9C%EC%8A%A4%ED%85%9COS_%EC%8B%9C%EA%B0%84_%E2%86%92_%ED%95%98%EB%93%9C%EC%9B%A8%EC%96%B4RTC_%EC%8B%9C%EA%B0%84_%EB%8F%99%EA%B8%B0%ED%99%94_%ED%99%95%EC%9D%B8\"><\/span>5-4. \uc2dc\uc2a4\ud15c(OS) \uc2dc\uac04 \u2192 \ud558\ub4dc\uc6e8\uc5b4(RTC) \uc2dc\uac04 \ub3d9\uae30\ud654 \ud655\uc778<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code># hwclock<\/code><\/pre>\n\n\n\n<p><br><\/p>\n\n\n\n<p>\ucd9c\ub825 \uc608\uc2dc:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>2025-09-27 12:01:15.596591+09:00<\/code><\/pre>\n\n\n\n<p><br><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h1 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"6_%ED%95%98%EB%93%9C%EC%9B%A8%EC%96%B4RTC_%EC%8B%9C%EA%B0%84\"><\/span>6. \ud558\ub4dc\uc6e8\uc5b4(RTC) \uc2dc\uac04<span class=\"ez-toc-section-end\"><\/span><\/h1>\n\n\n\n<p><br><br><br><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"6-1_%ED%95%98%EB%93%9C%EC%9B%A8%EC%96%B4RTC_%EC%8B%9C%EA%B0%84_%EB%B3%80%EA%B2%BD\"><\/span>6-1. \ud558\ub4dc\uc6e8\uc5b4(RTC) \uc2dc\uac04 \ubcc0\uacbd<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code># hwclock --set --date=\"2025-09-27 13:00:00\"<\/code><\/pre>\n\n\n\n<p><br><br><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"6-2_%ED%95%98%EB%93%9C%EC%9B%A8%EC%96%B4RTC_%EC%8B%9C%EA%B0%84_%EB%B3%80%EA%B2%BD_%ED%99%95%EC%9D%B8\"><\/span>6-2. \ud558\ub4dc\uc6e8\uc5b4(RTC) \uc2dc\uac04 \ubcc0\uacbd \ud655\uc778<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code># hwclock<\/code><\/pre>\n\n\n\n<p><br><\/p>\n\n\n\n<p>\ucd9c\ub825 \uc608\uc2dc:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>2025-09-27 13:00:04.284836+09:00<\/code><\/pre>\n\n\n\n<p><br><br><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"6-3_%ED%95%98%EB%93%9C%EC%9B%A8%EC%96%B4RTC_%EC%8B%9C%EA%B0%84_%E2%86%92_%EC%8B%9C%EC%8A%A4%ED%85%9COS_%EC%8B%9C%EA%B0%84_%EB%8F%99%EA%B8%B0%ED%99%94\"><\/span>6-3. \ud558\ub4dc\uc6e8\uc5b4(RTC) \uc2dc\uac04 \u2192 \uc2dc\uc2a4\ud15c(OS) \uc2dc\uac04 \ub3d9\uae30\ud654<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code># hwclock --hctosys<\/code><\/pre>\n\n\n\n<p><br><br><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"6-4_%ED%95%98%EB%93%9C%EC%9B%A8%EC%96%B4RTC_%EC%8B%9C%EA%B0%84_%E2%86%92_%EC%8B%9C%EC%8A%A4%ED%85%9COS_%EC%8B%9C%EA%B0%84_%EB%8F%99%EA%B8%B0%ED%99%94_%ED%99%95%EC%9D%B8\"><\/span>6-4. \ud558\ub4dc\uc6e8\uc5b4(RTC) \uc2dc\uac04 \u2192 \uc2dc\uc2a4\ud15c(OS) \uc2dc\uac04 \ub3d9\uae30\ud654 \ud655\uc778<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code># date<\/code><\/pre>\n\n\n\n<p><br><\/p>\n\n\n\n<p>\ucd9c\ub825 \uc608\uc2dc:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Sat Sep 27 01:00:20 PM KST 2025<\/code><\/pre>\n\n\n\n<p><br><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>1. \uac1c\uc694 2. \ubc84\uc804 3. \uc124\uba85 3-1. \ud558\ub4dc\uc6e8\uc5b4 \uc2dc\uac04 (RTC, Real-Time Clock) 3-2. \uc2dc\uc2a4\ud15c \uc2dc\uac04 (OS Time) 4. \uc2dc\uac04 \ud655\uc778 4-1. \ud558\ub4dc\uc6e8\uc5b4(RTC) \uc2dc\uac04 \ud655\uc778 \ucd9c\ub825 \uc608\uc2dc: 4-2. \uc2dc\uc2a4\ud15c(OS) \uc2dc\uac04 \ud655\uc778 \ucd9c\ub825 \uc608\uc2dc: 5. \uc2dc\uc2a4\ud15c(OS) \uc2dc\uac04 5-1. \uc2dc\uc2a4\ud15c(OS) \uc2dc\uac04 \ubcc0\uacbd 5-2. \uc2dc\uc2a4\ud15c(OS) \uc2dc\uac04 \ubcc0\uacbd \ud655\uc778 \ucd9c\ub825 \uc608\uc2dc: 5-3. \uc2dc\uc2a4\ud15c(OS) \uc2dc\uac04 \u2192 \ud558\ub4dc\uc6e8\uc5b4(RTC) \uc2dc\uac04 \ub3d9\uae30\ud654 5-4. \uc2dc\uc2a4\ud15c(OS) &#8230; <a title=\"[Linux] Rocky Linux 9.5 \ub9ac\ub205\uc2a4 \uc2dc\uac04 \uad00\ub9ac \uc785\ubb38: \ud558\ub4dc\uc6e8\uc5b4(RTC)\uc640 \uc2dc\uc2a4\ud15c(OS) \uc2dc\uac04 \uac1c\ub150\ubd80\ud130 \ub3d9\uae30\ud654\uae4c\uc9c0\" class=\"read-more\" href=\"https:\/\/seuheu.com\/?p=1911\" aria-label=\"[Linux] Rocky Linux 9.5 \ub9ac\ub205\uc2a4 \uc2dc\uac04 \uad00\ub9ac \uc785\ubb38: \ud558\ub4dc\uc6e8\uc5b4(RTC)\uc640 \uc2dc\uc2a4\ud15c(OS) \uc2dc\uac04 \uac1c\ub150\ubd80\ud130 \ub3d9\uae30\ud654\uae4c\uc9c0\uc5d0 \ub300\ud574 \ub354 \uc790\uc138\ud788 \uc54c\uc544\ubcf4\uc138\uc694\">\ub354 \uc77d\uae30<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[33,31],"tags":[],"class_list":["post-1911","post","type-post","status-publish","format-standard","hentry","category-rocky9","category-linuix"],"_links":{"self":[{"href":"https:\/\/seuheu.com\/index.php?rest_route=\/wp\/v2\/posts\/1911","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/seuheu.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/seuheu.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/seuheu.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/seuheu.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1911"}],"version-history":[{"count":3,"href":"https:\/\/seuheu.com\/index.php?rest_route=\/wp\/v2\/posts\/1911\/revisions"}],"predecessor-version":[{"id":1916,"href":"https:\/\/seuheu.com\/index.php?rest_route=\/wp\/v2\/posts\/1911\/revisions\/1916"}],"wp:attachment":[{"href":"https:\/\/seuheu.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1911"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/seuheu.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1911"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/seuheu.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1911"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}