{"id":345,"date":"2023-11-26T21:08:37","date_gmt":"2023-11-26T13:08:37","guid":{"rendered":"http:\/\/8.141.4.74\/?p=345"},"modified":"2024-03-28T13:43:25","modified_gmt":"2024-03-28T05:43:25","slug":"linux%e6%a8%a1%e5%bc%8f%e5%8c%b9%e9%85%8d%e4%b8%8e%e6%90%9c%e7%b4%a2%ef%bc%9a%e4%bb%8e%e9%80%9a%e9%85%8d%e7%ac%a6%e5%88%b0%e6%ad%a3%e5%88%99%e8%a1%a8%e8%be%be%e5%bc%8f%e7%9a%84%e5%ba%94%e7%94%a8","status":"publish","type":"post","link":"http:\/\/8.141.4.74\/?p=345","title":{"rendered":"Linux\u6a21\u5f0f\u5339\u914d\u4e0e\u641c\u7d22\uff1a\u4ece\u901a\u914d\u7b26\u5230\u6b63\u5219\u8868\u8fbe\u5f0f\u7684\u5e94\u7528\u4e0e\u6269\u5c55"},"content":{"rendered":"

\u901a\u914d\u7b26\u3001\u57fa\u672c\u6b63\u5219\u8868\u8fbe\u5f0f\u548c\u6269\u5c55\u6b63\u5219\u8868\u8fbe\u5f0f<\/h1>\n

\u901a\u914d\u7b26<\/h2>\n
\n

Linux\u4e2d\u901a\u914d\u7b26\u662f\u4e00\u79cd\u7279\u6b8a\u5b57\u7b26\uff0c\u7528\u4e8e\u5339\u914d\u4e00\u7ec4\u6587\u4ef6\u540d\u4e2d\u7684\u67d0\u4e9b\u90e8\u5206\u3002\u901a\u914d\u7b26\u53ef\u4ee5\u7528\u4e8e\u6587\u4ef6\u540d\u7684\u524d\u7f00\u3001\u540e\u7f00\u3001\u4e2d\u95f4\u7684\u4e00\u90e8\u5206\u7b49\u3002Linux\u4e2d\u5e38\u89c1\u7684\u901a\u914d\u7b26\u5305\u62ec\u661f\u53f7\uff08*\uff09\u3001\u95ee\u53f7\uff08?\uff09\u548c\u65b9\u62ec\u53f7\uff08[]\uff09\uff0c\u4ee5\u53ca\u4e00\u4e9b\u7279\u6b8a\u5b57\u7b26\uff0c\u5982\u82b1\u62ec\u53f7\uff08{}\uff09\u548c\u53cd\u659c\u6760\uff08\\\uff09\u3002<\/p>\n<\/blockquote>\n

\u5e38\u89c1\u7684\u901a\u914d\u7b26\u5982\u4e0b\uff1a<\/p>\n

* \u5339\u914d\u96f6\u4e2a\u6216\u591a\u4e2a\u5b57\u7b26\uff0c\u4f46\u4e0d\u5339\u914d "." \u5f00\u5934\u7684\u6587\u4ef6\uff0c\u5373\u9690\u85cf\u6587\u4ef6\n? \u5339\u914d\u4efb\u4f55\u5355\u4e2a\u5b57\u7b26,\u4e00\u4e2a\u6c49\u5b57\u4e5f\u7b97\u4e00\u4e2a\u5b57\u7b26\n~ \u5f53\u524d\u7528\u6237\u5bb6\u76ee\u5f55\n~mage \u7528\u6237mage\u5bb6\u76ee\u5f55\n. \u548c ~+ \u5f53\u524d\u5de5\u4f5c\u76ee\u5f55\n~- \u524d\u4e00\u4e2a\u5de5\u4f5c\u76ee\u5f55\n[0-9] \u5339\u914d\u6570\u5b57\u8303\u56f4\n[a-z] \u4e00\u4e2a\u5b57\u6bcd\n[A-Z] \u4e00\u4e2a\u5b57\u6bcd\n[wang] \u5339\u914d\u5217\u8868\u4e2d\u7684\u4efb\u4f55\u7684\u4e00\u4e2a\u5b57\u7b26\n[^wang] \u5339\u914d\u5217\u8868\u4e2d\u7684\u6240\u6709\u5b57\u7b26\u4ee5\u5916\u7684\u5b57\u7b26\n[^a-z] \u5339\u914d\u5217\u8868\u4e2d\u7684\u6240\u6709\u5b57\u7b26\u4ee5\u5916\u7684\u5b57\u7b26\n{file,file2}    \u53ef\u4ee5\u7528\u4e8e\u5217\u51fa\u4e00\u7ec4\u9009\u62e9\u9879\u3002\u5b83\u5e38\u7528\u4e8e\u540c\u65f6\u5339\u914d\u591a\u4e2a\u9009\u9879\n\\   \u53cd\u659c\u6760\uff08\\\uff09\u53ef\u4ee5\u7528\u4e8e\u8f6c\u4e49\u7279\u6b8a\u5b57\u7b26\u3002\u5b83\u5e38\u7528\u4e8e\u5339\u914d\u5305\u542b\u7279\u6b8a\u5b57\u7b26\u7684\u6587\u4ef6\u540d\n\n#\u522b\u5916\u8fd8\u6709\u5728Linux\u7cfb\u7edf\u4e2d\u9884\u5b9a\u4e49\u7684\u5b57\u7b26\u7c7b\n[:digit:]\uff1a\u4efb\u610f\u6570\u5b57\uff0c\u76f8\u5f53\u4e8e0-9\n[:lower:]\uff1a\u4efb\u610f\u5c0f\u5199\u5b57\u6bcd,\u8868\u793a a-z\n[:upper:]: \u4efb\u610f\u5927\u5199\u5b57\u6bcd,\u8868\u793a A-Z\n[:alpha:]: \u4efb\u610f\u5927\u5c0f\u5199\u5b57\u6bcd\n[:alnum:]\uff1a\u4efb\u610f\u6570\u5b57\u6216\u5b57\u6bcd\n[:blank:]\uff1a\u6c34\u5e73\u7a7a\u767d\u5b57\u7b26\n[:space:]\uff1a\u6c34\u5e73\u6216\u5782\u76f4\u7a7a\u767d\u5b57\u7b26\n[:punct:]\uff1a\u6807\u70b9\u7b26\u53f7\n[:print:]\uff1a\u53ef\u6253\u5370\u5b57\u7b26\n[:cntrl:]\uff1a\u63a7\u5236\uff08\u975e\u6253\u5370\uff09\u5b57\u7b26\n[:graph:]\uff1a\u56fe\u5f62\u5b57\u7b26\n[:xdigit:]\uff1a\u5341\u516d\u8fdb\u5236\u5b57\u7b26<\/code><\/pre>\n
\u57fa\u672c\u6b63\u5219\u8868\u8fbe\u5f0f<\/h2>\n
    \n
  1. \u5b57\u7b26\u5339\u914d<\/li>\n<\/ol>\n
    . \u5339\u914d\u4efb\u610f\u5355\u4e2a\u5b57\u7b26\uff0c\u53ef\u4ee5\u662f\u4e00\u4e2a\u6c49\u5b57\n[] \u5339\u914d\u6307\u5b9a\u8303\u56f4\u5185\u7684\u4efb\u610f\u5355\u4e2a\u5b57\u7b26\uff0c\u793a\u4f8b\uff1a[wang] [0-9] [a-z] [a-zA-Z]\n[^] \u5339\u914d\u6307\u5b9a\u8303\u56f4\u5916\u7684\u4efb\u610f\u5355\u4e2a\u5b57\u7b26,\u793a\u4f8b\uff1a[^wang]\n[:alnum:] \u5b57\u6bcd\u548c\u6570\u5b57\n[:alpha:] \u4ee3\u8868\u4efb\u4f55\u82f1\u6587\u5927\u5c0f\u5199\u5b57\u7b26\uff0c\u4ea6\u5373 A-Z, a-z\n[:lower:] \u5c0f\u5199\u5b57\u6bcd,\u793a\u4f8b:[[:lower:]],\u76f8\u5f53\u4e8e[a-z]\n[:upper:] \u5927\u5199\u5b57\u6bcd\n[:blank:] \u7a7a\u767d\u5b57\u7b26\uff08\u7a7a\u683c\u548c\u5236\u8868\u7b26\uff09\n[:space:] \u5305\u62ec\u7a7a\u683c\u3001\u5236\u8868\u7b26(\u6c34\u5e73\u548c\u5782\u76f4)\u3001\u6362\u884c\u7b26\u3001\u56de\u8f66\u7b26\u7b49\u5404\u79cd\u7c7b\u578b\u7684\u7a7a\u767d,\u6bd4[:blank:]\u5305\u542b\u7684\u8303\u56f4\n\u5e7f\n[:cntrl:] \u4e0d\u53ef\u6253\u5370\u7684\u63a7\u5236\u5b57\u7b26\uff08\u9000\u683c\u3001\u5220\u9664\u3001\u8b66\u94c3...\uff09\n[:digit:] \u5341\u8fdb\u5236\u6570\u5b57\n[:xdigit:]\u5341\u516d\u8fdb\u5236\u6570\u5b57\n[:graph:] \u53ef\u6253\u5370\u7684\u975e\u7a7a\u767d\u5b57\u7b26\n[:print:] \u53ef\u6253\u5370\u5b57\u7b26\n[:punct:] \u6807\u70b9\u7b26\u53f7\n\\w #\u5339\u914d\u5355\u8bcd\u6784\u6210\u90e8\u5206\uff0c\u7b49\u4ef7\u4e8e[_[:alnum:]]\n\\W #\u5339\u914d\u975e\u5355\u8bcd\u6784\u6210\u90e8\u5206\uff0c\u7b49\u4ef7\u4e8e[^_[:alnum:]]\n\\S #\u5339\u914d\u4efb\u4f55\u975e\u7a7a\u767d\u5b57\u7b26\u3002\u7b49\u4ef7\u4e8e [^ \\f\\n\\r\\t\\v]\u3002\n\\s #\u5339\u914d\u4efb\u4f55\u7a7a\u767d\u5b57\u7b26\uff0c\u5305\u62ec\u7a7a\u683c\u3001\u5236\u8868\u7b26\u3001\u6362\u9875\u7b26\u7b49\u7b49\u3002\u7b49\u4ef7\u4e8e [ \\f\\n\\r\\t\\v]\u3002\u6ce8\u610f\nUnicode \u6b63\u5219\u8868\u8fbe\u5f0f\u4f1a\u5339\u914d\u5168\u89d2\u7a7a\u683c\u7b26<\/code><\/pre>\n
      \n
    1. \u5339\u914d\u6b21\u6570<\/li>\n<\/ol>\n
      \u7528\u5728\u8981\u6307\u5b9a\u6b21\u6570\u7684\u5b57\u7b26\u540e\u9762\uff0c\u7528\u4e8e\u6307\u5b9a\u524d\u9762\u7684\u5b57\u7b26\u8981\u51fa\u73b0\u7684\u6b21\u6570<\/p>\n
      * #\u5339\u914d\u524d\u9762\u7684\u5b57\u7b26\u4efb\u610f\u6b21\uff0c\u5305\u62ec0\u6b21\uff0c\u8d2a\u5a6a\u6a21\u5f0f\uff1a\u5c3d\u53ef\u80fd\u957f\u7684\u5339\u914d\n.* #\u4efb\u610f\u957f\u5ea6\u7684\u4efb\u610f\u5b57\u7b26\n\\? #\u5339\u914d\u5176\u524d\u9762\u7684\u5b57\u7b26\u51fa\u73b00\u6b21\u62161\u6b21,\u5373:\u53ef\u6709\u53ef\u65e0\n\\+ #\u5339\u914d\u5176\u524d\u9762\u7684\u5b57\u7b26\u51fa\u73b0\u6700\u5c111\u6b21,\u5373:\u80af\u5b9a\u6709\u4e14 >=1 \u6b21\n\\{n\\} #\u5339\u914d\u524d\u9762\u7684\u5b57\u7b26n\u6b21\n\\{m,n\\} #\u5339\u914d\u524d\u9762\u7684\u5b57\u7b26\u81f3\u5c11m\u6b21\uff0c\u81f3\u591an\u6b21\n\\{,n\\} #\u5339\u914d\u524d\u9762\u7684\u5b57\u7b26\u81f3\u591an\u6b21,<=n\n\\{n,\\} #\u5339\u914d\u524d\u9762\u7684\u5b57\u7b26\u81f3\u5c11n\u6b21<\/code><\/pre>\n
        \n
      1. \u4f4d\u7f6e\u951a\u5b9a<\/li>\n<\/ol>\n
        \u4f4d\u7f6e\u951a\u5b9a\u53ef\u4ee5\u7528\u4e8e\u5b9a\u4f4d\u51fa\u73b0\u7684\u4f4d\u7f6e<\/p>\n
        ^ #\u884c\u9996\u951a\u5b9a, \u7528\u4e8e\u6a21\u5f0f\u7684\u6700\u5de6\u4fa7\n$ #\u884c\u5c3e\u951a\u5b9a\uff0c\u7528\u4e8e\u6a21\u5f0f\u7684\u6700\u53f3\u4fa7\n^PATTERN$ #\u7528\u4e8e\u6a21\u5f0f\u5339\u914d\u6574\u884c\n^$ #\u7a7a\u884c\n^[[:space:]]*$ #\u7a7a\u767d\u884c\n\\< \u6216 \\b #\u8bcd\u9996\u951a\u5b9a\uff0c\u7528\u4e8e\u5355\u8bcd\u6a21\u5f0f\u7684\u5de6\u4fa7\n\\> \u6216 \\b #\u8bcd\u5c3e\u951a\u5b9a\uff0c\u7528\u4e8e\u5355\u8bcd\u6a21\u5f0f\u7684\u53f3\u4fa7\n\\<PATTERN\\> #\u5339\u914d\u6574\u4e2a\u5355\u8bcd\n#\u6ce8\u610f: \u5355\u8bcd\u662f\u7531\u5b57\u6bcd,\u6570\u5b57,\u4e0b\u5212\u7ebf\u7ec4\u6210<\/code><\/pre>\n
          \n
        1. \u5206\u7ec4<\/li>\n<\/ol>\n
          \u5206\u7ec4\uff1a() \u5c06\u591a\u4e2a\u5b57\u7b26\u6346\u7ed1\u5728\u4e00\u8d77\uff0c\u5f53\u4f5c\u4e00\u4e2a\u6574\u4f53\u5904\u7406\uff0c\u5982\uff1a\\(root\\)+\n\u540e\u5411\u5f15\u7528\uff1a\u5206\u7ec4\u62ec\u53f7\u4e2d\u7684\u6a21\u5f0f\u5339\u914d\u5230\u7684\u5185\u5bb9\u4f1a\u88ab\u6b63\u5219\u8868\u8fbe\u5f0f\u5f15\u64ce\u8bb0\u5f55\u4e8e\u5185\u90e8\u7684\u53d8\u91cf\u4e2d\uff0c\u8fd9\u4e9b\u53d8\u91cf\u7684\u547d\u540d\n\u65b9\u5f0f\u4e3a: \\1, \\2, \\3, ...\n\\1 \u8868\u793a\u4ece\u5de6\u4fa7\u8d77\u7b2c\u4e00\u4e2a\u5de6\u62ec\u53f7\u4ee5\u53ca\u4e0e\u4e4b\u5339\u914d\u53f3\u62ec\u53f7\u4e4b\u95f4\u7684\u6a21\u5f0f\u6240\u5339\u914d\u5230\u7684\u5b57\u7b26<\/code><\/pre>\n
            \n
          1. \u6216\u8005<\/li>\n<\/ol>\n
            a\\|b #a\u6216b\nC\\|cat #C\u6216cat\n\\(C\\|c\\)at #Cat\u6216cat<\/code><\/pre>\n
            \u6269\u5c55\u6b63\u5219\u8868\u8fbe\u5f0f<\/h2>\n
              \n
            1. \u5b57\u7b26\u5339\u914d<\/li>\n<\/ol>\n
              . \u4efb\u610f\u5355\u4e2a\u5b57\u7b26\n[wang] \u6307\u5b9a\u8303\u56f4\u7684\u5b57\u7b26\n[^wang] \u4e0d\u5728\u6307\u5b9a\u8303\u56f4\u7684\u5b57\u7b26\n[:alnum:] \u5b57\u6bcd\u548c\u6570\u5b57\n[:alpha:] \u4ee3\u8868\u4efb\u4f55\u82f1\u6587\u5927\u5c0f\u5199\u5b57\u7b26\uff0c\u4ea6\u5373 A-Z, a-z\n[:lower:] \u5c0f\u5199\u5b57\u6bcd,\u793a\u4f8b:[[:lower:]],\u76f8\u5f53\u4e8e[a-z]\n:upper:] \u5927\u5199\u5b57\u6bcd\n[:blank:] \u7a7a\u767d\u5b57\u7b26\uff08\u7a7a\u683c\u548c\u5236\u8868\u7b26\uff09\n[:space:] \u6c34\u5e73\u548c\u5782\u76f4\u7684\u7a7a\u767d\u5b57\u7b26\uff08\u6bd4[:blank:]\u5305\u542b\u7684\u8303\u56f4\u5e7f\uff09\n[:cntrl:] \u4e0d\u53ef\u6253\u5370\u7684\u63a7\u5236\u5b57\u7b26\uff08\u9000\u683c\u3001\u5220\u9664\u3001\u8b66\u94c3...\uff09\n[:digit:] \u5341\u8fdb\u5236\u6570\u5b57\n[:xdigit:]\u5341\u516d\u8fdb\u5236\u6570\u5b57\n[:graph:] \u53ef\u6253\u5370\u7684\u975e\u7a7a\u767d\u5b57\u7b26\n[:print:] \u53ef\u6253\u5370\u5b57\u7b26\n[:punct:] \u6807\u70b9\u7b26\u53f7<\/code><\/pre>\n
                \n
              1. \u6b21\u6570\u5339\u914d<\/li>\n<\/ol>\n
                * \u5339\u914d\u524d\u9762\u5b57\u7b26\u4efb\u610f\u6b21\n? 0\u62161\u6b21\n+ 1\u6b21\u6216\u591a\u6b21\n{n} \u5339\u914dn\u6b21\n{m,n} \u81f3\u5c11m\uff0c\u81f3\u591an\u6b21<\/code><\/pre>\n
                  \n
                1. \u4f4d\u7f6e\u951a\u5b9a<\/li>\n<\/ol>\n
                  ^ \u884c\u9996\n$ \u884c\u5c3e\n\\<, \\b \u8bed\u9996\n\\>, \\b \u8bed\u5c3e<\/code><\/pre>\n
                    \n
                  1. \u5206\u7ec4\u5176\u4ed6<\/li>\n<\/ol>\n
                    () \u5206\u7ec4\n\u540e\u5411\u5f15\u7528\uff1a\\1, \\2, ...\n| \u6216\u8005\na|b #a\u6216b\nC|cat #C\u6216cat\n(C|c)at #Cat\u6216cat<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
                    \u901a\u914d\u7b26\u3001\u57fa\u672c\u6b63\u5219\u8868\u8fbe\u5f0f\u548c\u6269\u5c55\u6b63\u5219\u8868\u8fbe\u5f0f \u901a\u914d\u7b26 Linux\u4e2d\u901a\u914d\u7b26\u662f\u4e00\u79cd\u7279\u6b8a\u5b57\u7b26\uff0c\u7528\u4e8e\u5339\u914d\u4e00\u7ec4\u6587\u4ef6\u540d […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[36],"tags":[37],"views":219,"_links":{"self":[{"href":"http:\/\/8.141.4.74\/index.php?rest_route=\/wp\/v2\/posts\/345"}],"collection":[{"href":"http:\/\/8.141.4.74\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/8.141.4.74\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/8.141.4.74\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/8.141.4.74\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=345"}],"version-history":[{"count":1,"href":"http:\/\/8.141.4.74\/index.php?rest_route=\/wp\/v2\/posts\/345\/revisions"}],"predecessor-version":[{"id":346,"href":"http:\/\/8.141.4.74\/index.php?rest_route=\/wp\/v2\/posts\/345\/revisions\/346"}],"wp:attachment":[{"href":"http:\/\/8.141.4.74\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=345"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/8.141.4.74\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=345"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/8.141.4.74\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=345"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}