{"id":269,"date":"2026-03-20T08:06:14","date_gmt":"2026-03-19T23:06:14","guid":{"rendered":"https:\/\/ik1-221-80670.vs.sakura.ne.jp\/wordpress\/archives\/269"},"modified":"2026-06-26T16:43:05","modified_gmt":"2026-06-26T07:43:05","slug":"ubuntu%e3%81%ae%e3%83%91%e3%82%b9%e3%83%af%e3%83%bc%e3%83%89%e5%a4%89%e6%9b%b4%e3%82%b3%e3%83%9e%e3%83%b3%e3%83%89%e3%81%be%e3%81%a8%e3%82%81%ef%bc%88passwd%e3%81%ae%e4%bd%bf%e3%81%84%e6%96%b9","status":"publish","type":"post","link":"https:\/\/www.marchboy.xyz\/wordpress\/archives\/269","title":{"rendered":"Ubuntu\u306e\u30d1\u30b9\u30ef\u30fc\u30c9\u5909\u66f4\u30b3\u30de\u30f3\u30c9"},"content":{"rendered":"

Ubuntu\u3067\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u5909\u66f4\u3059\u308b\u57fa\u672c\u30b3\u30de\u30f3\u30c9<\/h2>\n

Ubuntu\u3067\u30e6\u30fc\u30b6\u30fc\u306e\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u5909\u66f4\u3059\u308b\u3082\u3063\u3068\u3082\u57fa\u672c\u7684\u306a\u30b3\u30de\u30f3\u30c9\u306f passwd<\/code> \u3067\u3059\u3002\u73fe\u5728\u30ed\u30b0\u30a4\u30f3\u4e2d\u306e\u81ea\u5206\u81ea\u8eab\u306e\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u5909\u66f4\u3059\u308b\u5834\u5408\u306f\u3001\u6b21\u306e\u30b3\u30de\u30f3\u30c9\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002<\/p>\n

passwd<\/code><\/pre>\n
\u5b9f\u884c\u3059\u308b\u3068\u3001\u73fe\u5728\u306e\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u5165\u529b\u3057\u305f\u5f8c\u3001\u65b0\u3057\u3044\u30d1\u30b9\u30ef\u30fc\u30c9\u30922\u56de\u5165\u529b\u3057\u307e\u3059\u3002<\/p>\n
Changing password for user username.\nCurrent password:\nNew password:\nRetype new password:\npasswd: password updated successfully<\/code><\/pre>\n
\u5225\u30e6\u30fc\u30b6\u30fc\u306e\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u5909\u66f4\u3059\u308b\u65b9\u6cd5<\/h2>\n
\u7ba1\u7406\u8005\u6a29\u9650\uff08sudo\uff09\u304c\u3042\u308b\u5834\u5408\u306f\u3001\u4ed6\u30e6\u30fc\u30b6\u30fc\u306e\u30d1\u30b9\u30ef\u30fc\u30c9\u3082\u5909\u66f4\u3067\u304d\u307e\u3059\u3002<\/p>\n
sudo passwd username<\/code><\/pre>\n
\u305f\u3068\u3048\u3070 testuser<\/code> \u306e\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u5909\u66f4\u3059\u308b\u5834\u5408\u306f\u6b21\u306e\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n
sudo passwd testuser<\/code><\/pre>\n
\u3053\u306e\u5834\u5408\u306f\u73fe\u5728\u306e\u30d1\u30b9\u30ef\u30fc\u30c9\u78ba\u8a8d\u306f\u4e0d\u8981\u3067\u3001\u65b0\u3057\u3044\u30d1\u30b9\u30ef\u30fc\u30c9\u306e\u307f\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/p>\n
root\u30e6\u30fc\u30b6\u30fc\u306e\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u8a2d\u5b9a\u3059\u308b<\/h2>\n
Ubuntu\u3067\u306f\u521d\u671f\u72b6\u614b\u3067root\u30a2\u30ab\u30a6\u30f3\u30c8\u304c\u7121\u52b9\u5316\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002root\u306b\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u8a2d\u5b9a\u3059\u308b\u5834\u5408\u306f\u4ee5\u4e0b\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002<\/p>\n
sudo passwd root<\/code><\/pre>\n
\u8a2d\u5b9a\u5f8c\u306f su<\/code> \u30b3\u30de\u30f3\u30c9\u3067root\u5207\u308a\u66ff\u3048\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
\u30d1\u30b9\u30ef\u30fc\u30c9\u5909\u66f4\u6642\u306b\u3088\u304f\u3042\u308b\u30a8\u30e9\u30fc<\/h2>\n
BAD PASSWORD<\/code> \u3068\u8868\u793a\u3055\u308c\u308b\u5834\u5408\u306f\u3001\u77ed\u3059\u304e\u308b\u30fb\u5358\u7d14\u3059\u304e\u308b\u6587\u5b57\u5217\u304c\u539f\u56e0\u3067\u3059\u3002\u82f1\u5927\u6587\u5b57\u30fb\u82f1\u5c0f\u6587\u5b57\u30fb\u6570\u5b57\u30fb\u8a18\u53f7\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3068\u901a\u308a\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n
BAD PASSWORD: The password is too short<\/code><\/pre>\n
\u6700\u4f4e8\u6587\u5b57\u4ee5\u4e0a\u3092\u76ee\u5b89\u306b\u8a2d\u5b9a\u3059\u308b\u3068\u5b89\u5168\u3067\u3059\u3002<\/p>\n
\u30d1\u30b9\u30ef\u30fc\u30c9\u6709\u52b9\u671f\u9650\u3082\u78ba\u8a8d\u3057\u305f\u3044\u5834\u5408<\/h2>\n
\u73fe\u5728\u306e\u30d1\u30b9\u30ef\u30fc\u30c9\u6709\u52b9\u671f\u9650\u306f chage<\/code> \u30b3\u30de\u30f3\u30c9\u3067\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n
sudo chage -l username<\/code><\/pre>\n
\u671f\u9650\u7ba1\u7406\u304c\u5fc5\u8981\u306a\u30b5\u30fc\u30d0\u30fc\u904b\u7528\u3067\u306f\u5408\u308f\u305b\u3066\u78ba\u8a8d\u3057\u3066\u304a\u304f\u3068\u4fbf\u5229\u3067\u3059\u3002<\/p>\n
\u307e\u3068\u3081<\/h2>\n
    \n
  • \u81ea\u5206\u306e\u30d1\u30b9\u30ef\u30fc\u30c9\u5909\u66f4: passwd<\/code><\/li>\n
  • \u4ed6\u30e6\u30fc\u30b6\u30fc\u5909\u66f4: sudo passwd username<\/code><\/li>\n
  • root\u8a2d\u5b9a: sudo passwd root<\/code><\/li>\n<\/ul>\n
    Ubuntu\u3067\u306f\u3082\u3063\u3068\u3082\u57fa\u672c\u7684\u306a\u7ba1\u7406\u30b3\u30de\u30f3\u30c9\u306e1\u3064\u306a\u306e\u3067\u3001\u30b5\u30fc\u30d0\u30fc\u521d\u671f\u8a2d\u5b9a\u6642\u306b\u899a\u3048\u3066\u304a\u304f\u3068\u5f79\u7acb\u3061\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
    Ubuntu\u3067\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u5909\u66f4\u3059\u308b\u57fa\u672c\u30b3\u30de\u30f3\u30c9 Ubuntu\u3067\u30e6\u30fc\u30b6\u30fc\u306e\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u5909\u66f4\u3059\u308b\u3082\u3063\u3068\u3082\u57fa\u672c\u7684\u306a\u30b3\u30de\u30f3\u30c9\u306f passwd \u3067\u3059\u3002\u73fe\u5728\u30ed\u30b0\u30a4\u30f3\u4e2d\u306e\u81ea\u5206\u81ea\u8eab\u306e\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u5909\u66f4\u3059\u308b\u5834\u5408\u306f\u3001\u6b21\u306e\u30b3\u30de\u30f3\u30c9\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[15],"tags":[],"class_list":["post-269","post","type-post","status-publish","format-standard","hentry","category-linux"],"_links":{"self":[{"href":"https:\/\/www.marchboy.xyz\/wordpress\/wp-json\/wp\/v2\/posts\/269","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.marchboy.xyz\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.marchboy.xyz\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.marchboy.xyz\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.marchboy.xyz\/wordpress\/wp-json\/wp\/v2\/comments?post=269"}],"version-history":[{"count":2,"href":"https:\/\/www.marchboy.xyz\/wordpress\/wp-json\/wp\/v2\/posts\/269\/revisions"}],"predecessor-version":[{"id":402,"href":"https:\/\/www.marchboy.xyz\/wordpress\/wp-json\/wp\/v2\/posts\/269\/revisions\/402"}],"wp:attachment":[{"href":"https:\/\/www.marchboy.xyz\/wordpress\/wp-json\/wp\/v2\/media?parent=269"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.marchboy.xyz\/wordpress\/wp-json\/wp\/v2\/categories?post=269"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.marchboy.xyz\/wordpress\/wp-json\/wp\/v2\/tags?post=269"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}