{"id":89,"date":"2026-01-28T03:00:22","date_gmt":"2026-01-27T18:00:22","guid":{"rendered":"http:\/\/word.igoni.kr\/?p=89"},"modified":"2026-02-02T22:42:16","modified_gmt":"2026-02-02T13:42:16","slug":"%eb%a6%ac%eb%88%85%ec%8a%a4%ec%97%90%ec%84%9c-%ec%82%ac%ec%9a%a9%ec%9e%90-%ea%b4%80%eb%a6%ac%ed%95%98%ea%b8%b0-1","status":"publish","type":"post","link":"http:\/\/www.igoni.kr\/?p=89","title":{"rendered":"\ub9ac\ub205\uc2a4\uc5d0\uc11c \uc0ac\uc6a9\uc790 \uad00\ub9ac\ud558\uae30-1"},"content":{"rendered":"<ol id=\"bkmrk-test-%EC%82%AC%EC%9A%A9%EC%9E%90%EB%A5%BC-test123%EC%9C%BC%EB%A1%9C-\">\n<li>test \uc0ac\uc6a9\uc790\ub97c test123\uc73c\ub85c \ubcc0\uacbd\n<pre><code class=\"language-shell\">$&gt; usermod -l test123 test\r\n$&gt; egrep 'test123' \/etc\/passwd\r\ntest123:x:10000:10000::\/data\/test:\/bin\/sh<\/code><\/pre>\n<\/li>\n<li>uid\ub97c 10000\uc5d0\uc11c 20000\uc73c\ub85c \ubcc0\uacbd\ud558\uae30\n<pre><code class=\"language-shell\">$&gt; usermod -u 20000 test\r\n$&gt; egrep 'test123' \/etc\/passwd\r\ntest:x:20000:10000::\/home\/test:\/bin\/sh<\/code><\/pre>\n<\/li>\n<li>gid\ub97c\u00a010000\uc5d0\uc11c 20000\uc73c\ub85c \ubcc0\uacbd\ud558\uae30\n<pre><code class=\"language-shell\">$&gt; usermod -u 20000 test\r\n$&gt; egrep 'test' \/etc\/passwd\r\ntest:x:20000:20000::\/home\/test:\/bin\/sh<\/code><\/pre>\n<\/li>\n<li>\ud648\ub514\ub809\ud1a0\ub9ac\ub97c \/data\/test \ub97c \/home\/test\ub85c \ubcc0\uacbd\n<pre><code class=\"language-shell\">$&gt; usermod -d \/home\/test11 test\r\n$&gt; egrep 'test' \/etc\/passwd\r\ntest:x:20000:20000::\/home\/test11:\/bin\/sh<\/code><\/pre>\n<p>* \uc2e4\uc81c \ub370\uc774\ud130\uac00 \uc774\ub3d9\ud558\uc9c4 \uc54a\uace0, \uc124\uc815\ub9cc \ubc14\ub01c<\/li>\n<li>\uc0ac\uc6a9\uc790 \uc7a0\uae08\n<pre><code class=\"language-shell\">$&gt; usermod -L test\r\n$&gt; grep 'test' \/etc\/shadow\r\n...\r\ntest:!aaaa:::\r\n...<\/code><\/pre>\n<p>*\uc0ac\uc6a9\uc790\uac00 \uc7a0\uae38\uacbd\uc6b0, shadow\ud30c\uc77c\uc5d0 !\ub85c \uc2dc\uc791\ud558\uba70, \ub85c\uadf8\uc778\uc774 \uc548\ub428.<\/li>\n<li>\uc0ac\uc6a9\uc790 \uc7a0\uae08\ud574\uc81c\n<pre><code class=\"language-shell\">$&gt; usermod -U test<\/code><\/pre>\n<\/li>\n<li>\uadf8\ub8f9\uba85\uc744 test \uadf8\ub8f9\uba85\uc744 test123\uc73c\ub85c \ubcc0\uacbd\n<pre><code class=\"language-shell\">$&gt; groupmod -n test123 test\r\n$&gt; grep 'test' \/etc\/group\r\ntest123:x:10000:<\/code><\/pre>\n<\/li>\n<li>\uadf8\ub8f9ID\ub97c 10000\uc5d0\uc11c 20000\uc73c\ub85c \ubcc0\uacbd\n<pre><code class=\"language-shell\">$&gt; groupmod -g 20000 test\r\n$&gt; grep 'test' \/etc\/group\r\ntest123:x:20000:<\/code><\/pre>\n<p>&nbsp;<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<table style=\"border-collapse: collapse; width: 100%; height: 48px;\" border=\"1\">\n<colgroup>\n<col style=\"width: 99.881%;\" \/><\/colgroup>\n<tbody>\n<tr style=\"height: 24px;\">\n<td style=\"height: 24px;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-499\" src=\"http:\/\/word.igoni.kr\/wp-content\/uploads\/2026\/01\/dae4e867-ef08-4187-adef-a353179d308d.png\" alt=\"\" width=\"1024\" height=\"1024\" srcset=\"http:\/\/www.igoni.kr\/wp-content\/uploads\/2026\/01\/dae4e867-ef08-4187-adef-a353179d308d.png 1024w, http:\/\/www.igoni.kr\/wp-content\/uploads\/2026\/01\/dae4e867-ef08-4187-adef-a353179d308d-300x300.png 300w, http:\/\/www.igoni.kr\/wp-content\/uploads\/2026\/01\/dae4e867-ef08-4187-adef-a353179d308d-150x150.png 150w, http:\/\/www.igoni.kr\/wp-content\/uploads\/2026\/01\/dae4e867-ef08-4187-adef-a353179d308d-768x768.png 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td class=\"align-right\" style=\"height: 24px; text-align: right;\">perplexity\uc5d0\uc11c \uc0dd\uc131\ud55c AI\uc774\ubbf8\uc9c0<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"<p>test \uc0ac\uc6a9\uc790\ub97c test123\uc73c\ub85c \ubcc0\uacbd $&gt; usermod -l test123 test $&gt; egrep &#8216;test123&#8217; \/etc\/passwd test123:x:10000:10000::\/data\/test:\/bin\/sh uid\ub97c 10000\uc5d0\uc11c&hellip;<\/p>\n","protected":false},"author":1,"featured_media":499,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[9,25,27],"class_list":["post-89","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-linux-","tag-centos","tag-usermod","tag-27"],"aioseo_notices":[],"_links":{"self":[{"href":"http:\/\/www.igoni.kr\/index.php?rest_route=\/wp\/v2\/posts\/89","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.igoni.kr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.igoni.kr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.igoni.kr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.igoni.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=89"}],"version-history":[{"count":2,"href":"http:\/\/www.igoni.kr\/index.php?rest_route=\/wp\/v2\/posts\/89\/revisions"}],"predecessor-version":[{"id":501,"href":"http:\/\/www.igoni.kr\/index.php?rest_route=\/wp\/v2\/posts\/89\/revisions\/501"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.igoni.kr\/index.php?rest_route=\/wp\/v2\/media\/499"}],"wp:attachment":[{"href":"http:\/\/www.igoni.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=89"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.igoni.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=89"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.igoni.kr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=89"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}