{"id":185658,"date":"2020-10-19T14:48:54","date_gmt":"2020-10-19T06:48:54","guid":{"rendered":"http:\/\/4563.org\/?p=185658"},"modified":"2020-10-19T14:48:54","modified_gmt":"2020-10-19T06:48:54","slug":"%e8%af%b7%e6%95%99-mkdir-%e6%9d%83%e9%99%90%e9%97%ae%e9%a2%98","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=185658","title":{"rendered":"\u8bf7\u6559 mkdir \u6743\u9650\u95ee\u9898"},"content":{"rendered":"
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\u8bf7\u6559 mkdir \u6743\u9650\u95ee\u9898 <\/h1>\n

<\/p>\n

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\u8cc7\u6df1\u5927\u4f6c : pinews <\/span> <\/i> 10<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
\u522b\u4eba\u7684\u4ee3\u7801\u51fa\u73b0\u95ee\u9898\uff0c\u5199\u5165\u65e5\u5fd7\u56e0\u6743\u9650\u88ab\u62d2\u7edd\u3002\u539f\u6765\u521b\u5efa\u7684\u6587\u4ef6\u5939\u6ca1\u6709\u5199\u5165\uff08\uff1f\uff01\uff09\u6743\u9650\u3002
\u8bb0\u5f97\u9ed8\u8ba4\u597d\u50cf\u6ca1\u95ee\u9898\uff0c\u67e5\u4e86\u4ee3\u7801\u597d\u50cf\u6ca1\u4ec0\u4e48\u95ee\u9898\uff0c\u540e\u6765\u5b9a\u4f4d\u5728 mkdir($dir, 777)\u4e0a\uff0c\u5b98\u65b9\u6587\u6863\u662f 0777\uff0c\u6216\u8005\u4e0d\u5199\u4e5f\u53ef\u4ee5\uff0c\u4f46\u662f 777 \u662f\u4e0d\u884c\u7684\u3002
\u6211\u662f\u4e00\u5934\u96fe\u6c34\uff0c\u4f20\u503c\u662f\u6570\u503c\u7c7b\u578b\u7684\uff0c\u6ca1\u52a0\u5f15\u53f7\uff0c0777 \u6253\u5370\u51fa\u6765\u4e0d\u662f 511 \u5417\uff1f\u518d\u8bf4\u4e3a\u4ec0\u4e48 0777 \u53ef\u4ee5\u5f97\u5230\u7684\u662f 755\uff0c\u800c 777 \u6700\u540e\u5f97\u5230\u7684\u53cd\u800c\u662f 1411\uff0c\u8d8a\u770b\u8d8a\u7cca\u6d82\u4e86\uff0c
\u8bf7\u5927\u4fa0\u6307\u6559\uff01\uff01 <\/div>\n
\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (5<\/span>) <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n
    \n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : nifury <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    0777 (octal) == 511 (decimal)
    777 (decimal) == 1411 (octal) <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : weirdo <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    0 \u5f00\u5934\u7684\u6570\u662f\u516b\u8fdb\u5236
    0x \u5f00\u5934\u7684\u6570\u662f\u5341\u516d\u8fdb\u5236
    0b \u5f00\u5934\u7684\u6570\u662f\u4e8c\u8fdb\u5236
    \u5176\u4ed6\u60c5\u51b5\u90fd\u662f\u5341\u8fdb\u5236 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : pinews <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u641c\u7d22\u4e86\u4e00\u756a\uff0c\u81ea\u95ee\u81ea\u7b54\u5427\uff0c\u8fd9\u4e2a\u53c2\u6570\uff0c\u663e\u7136\u5e76\u4e0d\u662f\u76f4\u63a5\u6309\u6570\u5b57\u6765\u8bbe\u7f6e\u7684\uff0c\u5f53\u7136\u4e5f\u4e0d\u662f\u6309\u5b57\u7b26\u4e32\u8bbe\u7f6e\u7684\u3002
    \u8fd9\u4e2a\u53c2\u6570 4 \u4e2a\u5b57\u7b26\uff0c\u7b2c\u4e00\u4e2a\u53eb\u7279\u6b8a\u6743\u9650\uff0c\u53ef\u4ee5\u6709 0\uff0c1\uff0c2\uff0c4\uff0c4 \u4e2a\u6570\u5b57 1 \u662f\u7c98\u6ede\uff0c2\uff0cSUID\uff0c4\uff0cSGID\uff0c0 \u662f\u9ed8\u8ba4\u7684\uff0c\u6ca1\u6709\u7279\u6b8a\u6743\u9650\uff0c\u8bbe\u7f6e\u4e3a 777 \u6700\u540e\u53d8\u6210 755 \u7684\u539f\u56e0\u662f umask\uff0c\u9ed8\u8ba4\u4e3a 022\uff0c
    \u800c 0777 \u53d8\u6210 755\uff0c\u662f\u7ecf\u8fc7 3 \u6b21\u8f6c\u6362\u5f97\u5230\u7684\uff0c\u5148\u53d8\u6210 10 \u8fdb\u5236\uff0c\u800c\u5185\u90e8\u518d\u8f6c\u6362\u6210 8 \u8fdb\u5236\uff0c\u6700\u540e\u518d\u7528 umask\uff0c
    \u65e2\u7136 0777==511\uff0c\u90a3\u6700\u7ec8\u7684\u6548\u679c\u4e5f\u662f\u4e00\u6837\u7684\uff0c
    \u7701\u7565\u7b2c\u4e00\u4f4d\uff0c\u7528\u540e\u4e09\u4f4d\u4e0e\u60f3\u8981\u7684\u6743\u9650\u5bf9\u7167\u662f\u4e0d\u5bf9\u7684\uff0c\u4e5f\u5c31\u662f\u8bf4 4 \u4f4d\u6570\u5b57\u4e0d\u4f46\u662f\u76f4\u89c2\u7684\uff0c\u4e5f\u662f\u51c6\u786e\u7684\uff0c\u56e0\u4e3a\u5185\u90e8\u505a\u4e86\u5904\u7406\uff0c\u7701\u7565\u7b2c\u4e00\u4f4d\u662f\u4e00\u4e2a\u7b80\u5355\u601d\u7ef4\u7684\u9519\u8bef\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : pinews <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u663e\u7136\u5e76\u4e0d\u662f\u76f4\u63a5\u6309\u201c\u76f4\u89c2\u6570\u5b57\u201d\u6765\u8bbe\u7f6e\u7684\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : happy7902 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u5916\u884c\u53ef\u80fd\u89c9\u5f97\u4f60\u662f\u4e2a\u4e13\u5bb6\uff0c\u4f46\u5b9e\u9645\u4f60\u53ef\u80fd\u6ca1\u5165\u95e8 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n","protected":false},"excerpt":{"rendered":"

    \u8bf7\u6559 mkdir \u6743\u9650\u95ee\u9898 \u8cc7\u6df1\u5927…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/185658"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=185658"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/185658\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=185658"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=185658"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=185658"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}