{"id":5474,"date":"2022-04-06T17:41:59","date_gmt":"2022-04-06T09:41:59","guid":{"rendered":"https:\/\/cn.hostease.com\/xueyuan\/?p=5474"},"modified":"2022-04-06T17:41:59","modified_gmt":"2022-04-06T09:41:59","slug":"linux%e6%9c%8d%e5%8a%a1%e5%99%a8%e4%b8%adcrw-brw-lrw%e7%ad%89%e7%ad%89%e6%96%87%e4%bb%b6%e5%b1%9e%e6%80%a7%e6%98%af%e4%bb%80%e4%b9%88","status":"publish","type":"post","link":"https:\/\/cn.hostease.com\/xueyuan\/jishu\/linux\/linux%e6%9c%8d%e5%8a%a1%e5%99%a8%e4%b8%adcrw-brw-lrw%e7%ad%89%e7%ad%89%e6%96%87%e4%bb%b6%e5%b1%9e%e6%80%a7%e6%98%af%e4%bb%80%e4%b9%88\/","title":{"rendered":"Linux\u670d\u52a1\u5668\u4e2dcrw brw lrw\u7b49\u7b49\u6587\u4ef6\u5c5e\u6027\u662f\u4ec0\u4e48"},"content":{"rendered":"

\u6240\u6709\u7684\u6587\u4ef6\u5176\u5b9e\u90fd\u662f\u4e00\u4e32\u5b57\u7b26\u6d41\uff0c\u4e0d\u8fc7\u5f53\u7528\u5408\u9002\u7684\u89e3\u6790\u65b9\u6cd5\uff0c\u53ef\u4ee5\u5f97\u5230\u6709\u6548\u4fe1\u606f\uff0c\u4eba\u4eec\u4e3a\u4e86\u65b9\u4fbf\u5bf9\u6587\u4ef6\u8fdb\u884c\u64cd\u4f5c\uff0c\u4fbf\u6309\u7167\u6587\u4ef6\u7684\u89e3\u6790\u65b9\u6cd5\u7684\u4e0d\u540c\uff0c\u7ed9\u4e86\u6587\u4ef6\u4e0d\u540c\u7684\u79cd\u7c7b\uff0c\u5e76\u7528\u4e0b\u8fb9\u7684\u65b9\u5f0f\u6765\u6807\u8bb0\u7ed9\u4eba\u770b\u3002<\/p>\n

\u4eca\u5929\u5728\u67e5\u770b \/dev\/fuse \u6587\u4ef6\u7684\u5c5e\u6027\u7684\u65f6\u5019\uff0c\u770b\u5230\u4e86crw_ \u6743\u9650\u4f4d\uff0c\u4e00\u65f6\u53cd\u5e94\u4e0d\u8fc7\u6765\uff1a<\/p>\n

[root@localhost ~]# ll \/dev\/fuse<\/p>\n

crw-rw-rw-. 1 root root 10, 229 Sep 20 11:12 \/dev\/fuse<\/p>\n

\u5728\u8fd9\u91cc\u8fdb\u884c\u5907\u6ce8\u4e00\u4e0b\uff0c\u76f8\u5173\u7b54\u6848\u6765\u6e90\u4e8e\u7f51\u7edc\u3002<\/p>\n

Linux\u670d\u52a1\u5668<\/strong><\/a>\u4e2dc\u8868\u793a\u5b57\u7b26\u8bbe\u5907\u6587\u4ef6\uff0cb\u8868\u793a\u5757\u8bbe\u5907\u6587\u4ef6\uff0cl\u8868\u793a\u7b26\u53f7\u94fe\u63a5\u6587\u4ef6\uff0cr\u8868\u793a\u53ef\u8bfb\u6743\u9650\uff0cw\u8868\u793a\u53ef\u5199\u6743\u9650\u3002\u63a8\u8350\u9605\u8bfb\uff1a\u300a\u600e\u6837\u901a\u8fc7\u65e5\u5fd7\u6587\u4ef6\u5b66\u4e60Linux\uff1f\u300b<\/a><\/p>\n

Linux\u670d\u52a1\u5668\u6587\u4ef6\u5c5e\u6027\u89e3\u8bfb\uff1a<\/p>\n

\u6587\u4ef6\u7c7b\u578b\uff1a<\/p>\n

-\uff1a\u666e\u901a\u6587\u4ef6 (f)<\/p>\n

d\uff1a\u76ee\u5f55\u6587\u4ef6<\/p>\n

b\uff1a\u5757\u8bbe\u5907\u6587\u4ef6 (block)<\/p>\n

c\uff1a\u5b57\u7b26\u8bbe\u5907\u6587\u4ef6 (character)<\/p>\n

l\uff1a\u7b26\u53f7\u94fe\u63a5\u6587\u4ef6(symbolic link file)<\/p>\n

p\uff1a\u547d\u4ee4\u7ba1\u9053\u6587\u4ef6(pipe)<\/p>\n

s\uff1a\u5957\u63a5\u5b57\u6587\u4ef6(socket)<\/p>\n

\u6587\u4ef6\u6743\u9650: 9\u4f4d\uff0c\u6bcf3\u4f4d\u4e00\u7ec4\uff0c\u6bcf\u4e00\u7ec4\uff1arwx(\u8bfb\uff0c\u5199\uff0c\u6267\u884c)\uff0c\u5f53\u6539\u7ec4\u4e0d\u5177\u6709\u67d0\u4e00\u6743\u9650\u7528-\u4ee3\u66ff\u3002<\/p>\n

\u7b2c\u4e00\u7ec4\u4e3a: \u6587\u4ef6\u62e5\u6709\u8005\u7684\u6743\u9650\uff0c \u8be5\u6587\u4ef6\u7684\u62e5\u6709\u8005\u53ef\u4ee5\u8bfb\u5199\uff0c\u4f46\u4e0d\u53ef\u6267\u884c;<\/p>\n

\u7b2c\u4e8c\u7ec4\u4e3a: \u540c\u7fa4\u7ec4\u7684\u6743\u9650<\/p>\n

\u7b2c\u4e09\u7ec4\u4e3a: \u5176\u4ed6\u975e\u672c\u7fa4\u7ec4\u7684\u6743\u9650<\/p>\n

\u4e0b\u9762\u770b\u4e0bLinux\u670d\u52a1\u5668\u4e2d\u7684\u6587\u4ef6\u79cd\u7c7b<\/p>\n

(1)\u666e\u901a\u6587\u4ef6(‘-‘, regluar file)<\/p>\n

\u5206\u4e3a\uff1a\u4e8c\u8fdb\u5236\u6587\u4ef6\u548c\u6587\u672c\u6587\u4ef6<\/p>\n

\u4e8c\u8fdb\u5236\u6587\u4ef6\uff0c\u662f\u7ed9\u673a\u5668\u770b\u7684\uff0c\u4f8b\u5982\uff1a.bin, .elf\u6587\u4ef6<\/p>\n

\u6587\u672c\u6587\u4ef6\uff1a\u7ed9\u4eba\u770b\u7684\uff0c\u4e00\u822c\u4e3aASCII\u7f16\u7801\uff0c\u9700\u8981\u7528ASCII\u7f16\u7801\u89e3\u6790\uff0c\u4f8b\u5982\uff1a.txt\uff0c.c\u6587\u4ef6\u3002<\/p>\n

(2)\u6587\u4ef6\u5939\u6587\u4ef6 ( ‘d ‘, directory file)<\/p>\n

\u4e00\u79cd\u7279\u6b8a\u7684\u6587\u4ef6\uff0c\u7279\u6b8a\u5728\uff1a\u9700\u8981\u7528\u5176\u5e93\u51fd\u6570\u6253\u5f00\u3002<\/p>\n

(3)\u94fe\u63a5\u6587\u4ef6 (‘l’, link file)<\/p>\n

\u8fd9\u91cc\u662f\u8f6f\u8fde\u63a5\u6587\u4ef6\uff0c<\/p>\n

\u6ce8\u610f\uff1a\u8f6f\u8fde\u63a5\u6587\u4ef6\u548c\u786c\u94fe\u63a5\u6587\u4ef6\u7684\u5dee\u522b\uff0c<\/p>\n

\u8f6f\u8fde\u63a5\u6587\u4ef6\uff0c\u672c\u8eab\u5c31\u662f\u4e00\u4e2a\u72ec\u7acb\u7684\u6587\u4ef6\uff0c\u6709\u81ea\u5df1\u7684 inode\uff0c<\/p>\n

\u786c\u94fe\u63a5\u6587\u4ef6\uff0c\u4e0d\u662f\u72ec\u7acb\u7684\u6587\u4ef6\uff0c\u4ed6\u548c\u88ab\u94fe\u63a5\u7684\u6587\u4ef6\u5171\u7528\u540c\u4e00\u4e2a inode.\u63a8\u8350\u9605\u8bfb\uff1a\u300aLinux\u72ec\u7acb\u670d\u52a1\u5668\u600e\u6837\u4f7f\u7528ncat\u8bca\u65ad\u7f51\u7edc\u300b<\/a><\/p>\n

(4)\u7ba1\u9053\u6587\u4ef6 (‘p’, piple file)<\/p>\n

\u7528\u4e8e\u8fdb\u7a0b\u901a\u4fe1\u3002<\/p>\n

(5)\u5957\u63a5\u5b57\u6587\u4ef6 (‘s’, socket file)<\/p>\n

\u7528\u4e8e\u7f51\u7edc\u3002<\/p>\n

(6)\u5b57\u7b26\u8bbe\u5907\u6587\u4ef6 (‘c’, character file)<\/p>\n

\u4e3a\u865a\u62df\u6587\u4ef6\uff0c\u56e0\u4e3a\u672c\u8eab\u4e0d\u5b58\u5728\u4e8e\u786c\u76d8\u4e2d\uff0c\u662ffs\u521b\u5efa\u7684\u3002<\/p>\n

\u4e0d\u80fd\u76f4\u63a5\u8bfb\u5199\uff0c\u8981\u4f7f\u7528API.<\/p>\n

(7)\u5757\u8bbe\u5907\u6587\u4ef6 (‘b’, block file)<\/p>\n

\u4e5f\u662f\u865a\u62df\u6587\u4ef6\uff0c\u4e3afd\u521b\u5efa\uff0c\u8981\u4f7f\u7528API\u8bfb\u5199\u3002<\/p>\n

\u5982\u4f55\u83b7\u53d6\u4e00\u4e2a\u6587\u4ef6\u7684\u5c5e\u6027?<\/p>\n

(1)shell \u4e2d\u4f7f\u7528 stat \u547d\u4ee4<\/p>\n

(2)\u7a0b\u5e8f\u4e2d\u4f7f\u7528 stat API<\/p>\n

\u6587\u4ef6\u7684\u6743\u9650<\/p>\n

(1)\u6587\u4ef6\u6743\u9650\u5982\u4f55\u83b7\u5f97?<\/p>\n

\u5728\u7a0b\u5e8f\u4e2d\u4f7f\u7528 stat API\uff0c\u53ef\u4ee5\u83b7\u5f97 st_mode \u5143\u7d20\uff0cst_mode \u662f\u4e00\u4e2a\u4ee5\u4f4d\u4e3a\u5355\u4f4d\u8bb0\u5f55\u5185\u5bb9\uff0c\u6240\u4ee5\u53ea\u9700\u8981\u5bf9\u5bf9\u5e94\u4f4d\u8fdb\u884c & \u5373\u53ef\uff0cLinux\u670d\u52a1\u5668\u63d0\u4f9b\u4e86\u5bf9\u5e94\u7684\u5b8f\uff0c\u53ef\u4ee5\u7528\u5b8f\u3002<\/p>\n

(2)\u5982\u4f55\u5224\u65ad\u7a0b\u5e8f\u5bf9\u6587\u4ef6\u662f\u5426\u6709\u6743\u9650?<\/p>\n

\u9996\u5148\uff0c\u7a0b\u5e8f\u5bf9\u6587\u4ef6\u7684\u6743\u9650\uff0c\u662f\u7531\u6267\u884c\u7a0b\u5e8f\u7684\u7528\u6237\u51b3\u5b9a\u7684\uff0c\u7528\u6237\u6709\u6743\u9650\uff0c\u7a0b\u5e8f\u5c31\u6709\uff0c\u7528\u6237\u6ca1\u6709\uff0c\u7a0b\u5e8f\u5c31\u6ca1\u6709\uff0c\u5176\u6b21\u5728\u7a0b\u5e8f\u4e2d\u5224\u65ad\u662f\u5426\u6709\u6743\u9650\u4f7f\u7528 access API\uff0c\u6700\u540e\uff0c\u4f18\u79c0\u7a0b\u5e8f\u5728\u6267\u884c\u5f00\u59cb\u9996\u5148\u8981\u5bf9\u64cd\u4f5c\u7684\u6587\u4ef6\u5224\u65ad\u6743\u9650\uff0c\u5982\u679c\u6ca1\u6709\u6743\u9650\uff0c\u9700\u8981\u5bf9\u4f7f\u7528\u8005\u8fdb\u884c\u63d0\u9192\u3002<\/p>\n

(3)\u5982\u4f55\u4fee\u6539\u6743\u9650?<\/p>\n

shell\u4e2d\u6709chmod\u547d\u4ee4\uff0c\u540c\u6837\u4e5f\u6709chmodAPI\uff0c\u6240\u4ee5\u4f7f\u7528\u8fd9\u4e2aAPI\u5373\u53ef\u3002<\/p>\n

(4)\u65b0\u521b\u5efa\u7684\u6587\u4ef6\u7684\u6743\u9650\u662f\u600e\u4e48\u786e\u5b9a\u7684?<\/p>\n

 <\/p>\n

Linux\u670d\u52a1\u5668\u6709\u4e2a umask \u7684\u7c7b\u4f3c\u4e8e\u53d8\u91cf\u7684\u4e1c\u897f\uff0c\u65b0\u6587\u4ef6\u7684\u6743\u9650\u901a\u8fc7 umask \u6765\u786e\u5b9a\u3002umask\u53ef\u4ee5\u5728shell\u4e2d\u6539\u53d8\u3002\u63a8\u8350\u76f8\u5173\u9605\u8bfb\uff1a\u300alinux\u865a\u62df\u4e3b\u673a\u5728\u5b89\u5168\u6027\u65b9\u9762\u600e\u4e48\u6837\u300b<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

\u6240\u6709\u7684\u6587\u4ef6\u5176\u5b9e\u90fd\u662f\u4e00\u4e32\u5b57\u7b26\u6d41\uff0c\u4e0d\u8fc7\u5f53\u7528\u5408\u9002\u7684\u89e3\u6790\u65b9\u6cd5\uff0c\u53ef\u4ee5\u5f97\u5230\u6709\u6548\u4fe1\u606f\uff0c\u4eba\u4eec\u4e3a\u4e86\u65b9\u4fbf\u5bf9\u6587\u4ef6\u8fdb\u884c\u64cd\u4f5c\uff0c\u4fbf\u6309\u7167\u6587\u4ef6 … \u9605\u8bfb\u66f4\u591a<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[49],"tags":[869],"class_list":["post-5474","post","type-post","status-publish","format-standard","hentry","category-linux","tag-linux"],"aioseo_notices":[],"jetpack_featured_media_url":"","jetpack-related-posts":[],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts\/5474","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/comments?post=5474"}],"version-history":[{"count":1,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts\/5474\/revisions"}],"predecessor-version":[{"id":5475,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts\/5474\/revisions\/5475"}],"wp:attachment":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/media?parent=5474"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/categories?post=5474"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/tags?post=5474"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}