{"id":202,"date":"2022-01-20T19:44:43","date_gmt":"2022-01-20T11:44:43","guid":{"rendered":"https:\/\/www.yuyiares.com\/?p=202"},"modified":"2022-09-30T13:09:51","modified_gmt":"2022-09-30T05:09:51","slug":"bash-%e5%9f%ba%e6%9c%ac%e6%96%87%e6%b3%95%e6%95%99%e5%ad%b8-3","status":"publish","type":"post","link":"https:\/\/www.yuyiares.com\/?p=202","title":{"rendered":"bash \u2013 \u57fa\u672c\u6587\u6cd5\u6559\u5b78 #3"},"content":{"rendered":"\t\t
\n\t\t\t\t\t\t
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\u6b63\u898f\u8868\u793a\u6cd5<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

\u6b63\u898f\u8868\u793a\u5f0f ( Regular expressions , \u7c21\u7a31 regex ) \u662f\u4e00\u7a2e\u7528\u4f86\u6bd4\u5c0d\u6587\u5b57\u7684\u65b9\u6cd5\uff0c\u76f8\u7576\u4fbf\u5229\u3002<\/p>

\u5728 bash \u4e2d\uff0c\u53ea\u6709\u8907\u5408\u5f0f\u6307\u4ee4\u624d\u6703\u4f7f\u7528\u5230\u6b63\u898f\u8868\u793a\u5f0f\uff0c\u4f46\u662f\u9084\u662f\u75d5\u503c\u5f97\u5b78\u7fd2\uff0c\u56e0\u70ba\u6b63\u898f\u8868\u793a\u5f0f\u6703\u727d\u626f\u5230\u5f88\u591a\u5de5\u5177\uff0c\u50cf\u662f grep\u3001awk \u548c sed \u7b49\u7b49\u3002<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

\n\t\t\t\t
\n\t\t\t\t\t

\u7bc4\u4f8b\u6587\u4ef6 - frost.txt<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

1 \u00a0 \u00a0 Two roads diverged in a yellow wood,
2\u00a0\u00a0\u00a0\u00a0 And sorry I could not travel both
3 \u00a0 \u00a0 And be one traveler,long I stood
4\u00a0\u00a0\u00a0\u00a0 And looked down one as far as I could
5\u00a0\u00a0\u00a0\u00a0 To Where it bent in the undergrowth;
6
7 Excerpt from The Road Not Taken by Robert Frosr<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

\n\t\t\t\t
\n\t\t\t\t\t

\u6b63\u898f\u8868\u793a\u5f0f - grep<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

\u70ba\u65b9\u4fbf\u5c55\u793a\uff0c\u4e0b\u65b9\u4f7f\u7528grep\u9032\u884c\u6b63\u898f\u8868\u793a\u5f0f\u7684\u8b1b\u89e3\u3002grep \u6307\u4ee4\u901a\u5e38\u7528\u65bc\u6a94\u6848\u5167\u5bb9\u7684\u641c\u5c0b\u3002\u900f\u904e\u6307\u5b9a\u6a23\u5f0f\uff0c\u53ef\u4ee5\u6bd4\u5c0d\u4f7f\u5426\u6709\u7b26\u5408\u689d\u4ef6\u7684\u5167\u5bb9\u3002<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

\n\t\t\t\t
\n\t\t\t\t\t

\u7528\u6cd5<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

grep options pattern filenames<\/p>

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 (\u9078\u9805)\u00a0\u00a0\u00a0 (\u53c3\u6578)\u00a0\u00a0\u00a0\u00a0\u00a0 (\u6a94\u540d)<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

\n\t\t\t\t
\n\t\t\t\t\t

\u5e38\u7528\u6307\u4ee4\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t
  • – c : \u8a08\u7b97\u7b26\u5408\u6bd4\u5c0d\u6a23\u5f0f\u7684\u884c\u6578\u3002<\/span><\/li>
  • -E : \u555f\u7528\u66f4\u5ee3\u7fa9\u7684\u6b63\u898f\u8868\u793a\u5f0f\u3002<\/span><\/li>
  • -f : \u5f9e\u6307\u5b9a\u6a94\u6848\u8b80\u53d6\u8981\u641c\u5c0b\u7684\u6a23\u5f0f\u3002\u6a94\u6848\u4e2d\u53ef\u4ee5\u5305\u542b\u591a\u7a2e\u6a23\u5f0f\u3002\u4e00\u884c\u8868\u793a\u4e00\u7a2e\u6a23\u5f0f\u3002<\/span><\/li>
  • -i : \u5ffd\u7565\u5b57\u5143\u5927\u5c0f\u5beb\u3002<\/span><\/li>
  • -l : \u53ea\u5370\u51fa\u7b26\u5408\u6bd4\u5c0d\u6a23\u5f0f\u7684\u6a94\u6848\u540d\u7a31\u548c\u8def\u5f91\u3002<\/span><\/li>
  • -n : \u5370\u51fa\u6a94\u6848\u4e2d\u7b26\u5408\u6bd4\u5c0d\u6a23\u5f0f\u7684\u884c\u865f\u3002<\/span><\/li>
  • -P : \u555f\u7528 Perl \u7684\u6b63\u898f\u8868\u793a\u5f0f\u5f15\u64ce\u3002<\/span><\/li>
  • -R,r : \u905e\u8ff4\u641c\u5c0b\u5b50\u76ee\u7da0\u3002<\/span><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
    \n\t\t\t\t
    \n\t\t\t\t\t

    \u8209\u4f8b\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
    \n\t\t\t\t
    \n\t\t\t\t\t\t\t\t\t

    \u82e5\u9700\u8981\u5728\u5bb6\u76ee\u9304\u548c\u5176\u5b50\u76ee\u9304\u641c\u5c0b\u542b\u6709 security \u5b57\u6a23\u7684\u6a94\u6848\uff0c\u6307\u4ee4\u5982\u4e0b\u6240\u793a :<\/p>

    \u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

    \n\t\t\t\t
    \n\t\t\t\t\t\t\t\t\t

    grep -R -i ‘security’\u00a0 \/home<\/p>

    \u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

    \n\t\t\t\t
    \n\t\t\t\t\t

    \u6b63\u898f\u8868\u793a\u5f0f\u7684\u4e2d\u4ecb\u5b57\u7b26<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
    \n\t\t\t\t
    \n\t\t\t\t\t\t\t\t\t

    “\u6b63\u898f\u8868\u793a\u5f0f” \u5176\u5be6\u5c31\u662f\u4e2d\u4ecb\u5b57\u7b26\u548c\u5f88\u591a\u5b57\u5143\u6240\u7d44\u5408\u7684\u6a23\u5f0f\u3002<\/p>

    \u5728\u6b63\u898f\u8868\u793a\u5f0f\u4e2d\uff0c\u6709\u5f88\u591a\u7279\u6b8a\u7b26\u865f\u6709\u7279\u6b8a\u610f\u7fa9\u3002<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

    \n\t\t\t\t
    \n\t\t\t\t\t

    \u4e2d\u4ecb\u5b57\u7b26<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
    \n\t\t\t\t
    \n\t\t\t\t\t

    \u53e5\u865f ( . )<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
    \n\t\t\t\t
    \n\t\t\t\t\t\t\t\t\t
    • \u4ee3\u8868\u55ae\u4e00\u842c\u7528\u5b57\u5143<\/span><\/li>
    • \u53ef\u4ee5\u6bd4\u5c0d\u51fa\u4efb\u4f55\u55ae\u4e00\u5b57\u5143\uff0c\u63db\u884c\u5b57\u5143\u4f8b\u5916<\/span><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
      \n\t\t\t\t
      \n\t\t\t\t\t\t\t\t\t

      $\u00a0 grep \u2018T.o\u2019 frost.txt<\/span><\/p>

      1 \u00a0 \u00a0 Two<\/strong><\/span> roads diverged in a yellow wood,<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

      \n\t\t\t\t
      \n\t\t\t\t\t

      \u554f\u865f ( ? )<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
      \n\t\t\t\t
      \n\t\t\t\t\t\t\t\t\t
      • \u554f\u865f\u6703\u8b93\u5b83\u524d\u9762\u7684\u4efb\u4f55\u9805\u76ee\u90fd\u8b8a\u5f97\u53ef\u6709\u53ef\u7121<\/span><\/li>
      • \u5141\u8a31\u51fa\u73fe\u4e00\u500b\u3001\u6216\u662f\u6c92\u6709\u9805\u76ee<\/span><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
        \n\t\t\t\t
        \n\t\t\t\t\t\t\t\t\t

        $ egrep \u2018T.?o\u2019 frost.txt<\/span><\/p>

        1 \u00a0 \u00a0 Two<\/strong><\/span> roads diverged in a yellow wood,<\/span><\/p>

        5\u00a0\u00a0\u00a0\u00a0 To<\/strong> <\/span>Where it bent in the undergrowth;<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

        \n\t\t\t\t
        \n\t\t\t\t\t

        \u661f\u865f ( * )<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
        \n\t\t\t\t
        \n\t\t\t\t\t\t\t\t\t
        • \u6bd4\u5c0d\u51fa\u51fa\u73fe\u904e1\u6b21\u4ee5\u4e0a\u3001\u6216\u662f\u6839\u672c\u672a\u51fa\u73fe<\/span><\/li>
        • \u8207 ? \u5f88\u50cf\uff0c\u5dee\u5225\u5728\u65bc\u5141\u8a31\u6b21\u6578\u4e00\u6b21\u4ee5\u4e0a<\/span><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
          \n\t\t\t\t
          \n\t\t\t\t\t\t\t\t\t

          $ grep \u2018T.*o\u2019 frost.txt<\/span><\/p>

          1 \u00a0 \u00a0 Two<\/strong><\/span> roads diverged in a yellow wood,<\/span><\/p>

          5\u00a0\u00a0\u00a0\u00a0 To<\/strong><\/span> Where it bent in the undergrowth;<\/p>

          7 Excerpt from The Ro<\/strong><\/span>ad Not Taken by Robert Frosr<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

          \n\t\t\t\t
          \n\t\t\t\t\t

          \u52a0\u865f ( + )<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
          \n\t\t\t\t
          \n\t\t\t\t\t\t\t\t\t
          • \u8207\u661f\u865f\u4e00\u6a23\uff0c\u4f46\u5fc5\u9808\u8981\u6c42\u4e00\u6b21\u4ee5\u4e0a<\/span><\/li>
          • \u6703\u6bd4\u5c0d\u51fa\u51fa\u73fe\u81f3\u5c11\u4e00\u6b21\u7684\u524d\u7f6e\u6a23\u5f0f<\/span><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
            \n\t\t\t\t
            \n\t\t\t\t\t\t\t\t\t

            $ egrep \u2018T.+o\u2019 frost.txt<\/span><\/p>

            1 \u00a0 \u00a0 Two<\/strong> <\/span>roads diverged in a yellow wood,<\/span><\/p>

            5\u00a0\u00a0\u00a0\u00a0 To Where it bent in the undergro<\/strong><\/span>wth;<\/p>

            7 Excerpt from The Ro<\/strong><\/span>ad Not Taken by Robert Frosr<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

            \n\t\t\t\t
            \n\t\t\t\t\t

            \u7fa4\u805a<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
            \n\t\t\t\t
            \n\t\t\t\t\t\t\t\t\t
            • \u900f\u904e\u5c0f\u62ec\u5f27\u4f86\u96c6\u5408\u5b57\u5143<\/span><\/li>
            • \u5141\u8a31\u5c07\u51fa\u73fe\u5728\u8a87\u80e1\u4e2d\u7684\u5b57\u5143\u8996\u70ba\u4e8b\u5f8c\u53ef\u4ee5\u6bd4\u5c0d\u53c3\u7167\u7684\u55ae\u4e00\u9805\u76ee<\/span><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
              \n\t\t\t\t
              \n\t\t\t\t\t\t\t\t\t

              $ egrep \u2018And be one (stranger|traveler), long I stood\u2019 frost.txt<\/span><\/p>

              3 \u00a0 \u00a0 And be one traveler,long I stood<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

              \n\t\t\t\t
              \n\t\t\t\t\t

              \u4e2d\u62ec\u865f\u548c\u5b57\u5143\u7a2e\u985e<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
              \n\t\t\t\t
              \n\t\t\t\t\t\t\t\t\t

              \u4e2d\u62ec\u865f\u901a\u5e38\u7528\u4f86\u5b9a\u7fa9\u5b57\u5143\u7a2e\u985e\uff0c\u8a73\u7d30\u5982\u4e0b\u6240\u793a :
              <\/span><\/p>

              • [abc] : \u53ea\u6bd4\u5c0d\u51faa\u3001b\u3001c<\/span><\/li>
              • [1-5] : \u53ea\u6bd4\u5c0d\u51fa1~5\u7684\u6578\u5b57<\/span><\/li>
              • [a-zA-Z] : \u53ea\u6bd4\u5c0d\u51fa\u5927\u5beb\u6216\u5c0f\u5beb\u7684\u82f1\u6587\u5b57\u6bcd<\/span><\/li>
              • [0-9\u00b1*\/] : \u53ea\u6bd4\u5c0d\u51fa\u6578\u5b57\u6216\u662f\u56db\u5247\u904b\u7b97<\/span><\/li>
              • [0-9a-fA-F] : \u53ea\u6bd4\u5c0d\u51fa16\u9032\u4f4d\u6578\u5b57<\/span><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
                \n\t\t\t\t
                \n\t\t\t\t\t

                \u6377\u5f91<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
                \n\t\t\t\t
                \n\t\t\t\t\t\t\t\t\t

                \u6709\u4e00\u7cfb\u5217\u9810\u5148\u5b9a\u7fa9\u597d\u7684\u5b57\u5143\u7a2e\u985e\uff0c\u7a31\u4e4b\u70ba\u6377\u5f91<\/span><\/p>

                • \\s : \u7a7a\u767d<\/span><\/li>
                • \\S : \u975e\u7a7a\u767d<\/span><\/li>
                • \\d : \u6578\u5b57<\/span><\/li>
                • \\D : \u975e\u6578\u5b57<\/span><\/li>
                • \\w : \u5b57\u8a5e<\/span><\/li>
                • \\W : \u975e\u5b57\u8a5e<\/span><\/li>
                • \\x : \u5341\u516d\u9032\u4f4d\u6578\u5b57(\u4f8b\u59820x5F<\/span>
                    • \u9700\u8981\u6ce8\u610f\u6ce8\u610f\uff0c egrep \u4e0d\u652f\u63f4\u6377\u5f91<\/span><\/li>
                    • \u9700\u8981\u5229\u7528grep -P<\/span><\/li><\/ul><\/blockquote><\/li><\/ul><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
                      \n\t\t\t\t
                      \n\t\t\t\t\t

                      \u4e00\u7cfb\u5217\u5b57\u5143\u7a2e\u985e<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
                      \n\t\t\t\t
                      \n\t\t\t\t\t\t\t\t\t

                      \u5982\u679c\u9700\u8981\u5c0d\u521d\u9023\u7e8c\u591a\u500b\u5b57\u5143\uff0c\u53ef\u4ee5\u5229\u7528*\u6216\u662f+\u4f86\u88fd\u4f5c\u51fa\u9700\u8981\u7684\u6548\u679c\u3002<\/p>

                      • [:alnum:] – \u6578\u5b57\u548c\u5b57\u6bcd\u5b57\u5143<\/li>
                      • [:alpha:] – \u7d14\u5b57\u6bcd\u5b57\u5143<\/li>
                      • [:cntrl:] – \u63a7\u5236\u5b57\u5143<\/li>
                      • [:digit:] – \u6578\u5b57\u5b57\u5143<\/li>
                      • [:graph:] – \u4efb\u4f55\u63a7\u5236\u548c\u7a7a\u767d\u5b57\u5143\u4ee5\u5916\u7684\u5b57\u5143<\/li>
                      • [:lower:] – \u5c0f\u5beb\u5b57\u6bcd<\/li>
                      • [:print:] – \u4efb\u4f55\u63a7\u5236\u5b57\u5143\u4ee5\u5916\u7684\u5b57\u5143<\/li>
                      • [:punct:] – \u6a19\u9ede\u7b26\u865f\u5b57\u5143<\/li>
                      • [:space:] – \u5305\u62ec\u63db\u884c\u7b26\u865f\u5728\u5167\u7684\u7a7a\u767d\u5b57\u5143<\/li>
                      • [:upper:] – \u5927\u5beb\u5b57\u6bcd<\/li>
                      • [:xdigit:]\u3000- \u4efb\u4f55\u5341\u516d\u9032\u4f4d\u5b57\u5143<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
                        \n\t\t\t\t
                        \n\t\t\t\t\t

                        \u56de\u6714\u53c3\u7167<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
                        \n\t\t\t\t
                        \n\t\t\t\t\t\t\t\t\t

                        \u5f88\u597d\u7528\uff0c\u4f46\u76f8\u5c0d\u6bd4\u8f03\u8907\u96dc\uff0c\u9700\u8981\u82b1\u4e00\u9ede\u6642\u9593\u53bb\u6574\u7406\u3002<\/p>

                        \u7bc4\u4f8b\u6a94\u6848 tag.txt \u5982\u4e0b :<\/p>

                        \u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

                        \n\t\t\t\t
                        \n\t\t\t\t\t\t\t\t\t

                        \u00a01 \u00a0\u00a0 Command
                        2 \u00a0\u00a0\u00a0 <i>line<\/i>
                        3\u00a0\u00a0\u00a0\u00a0 is
                        4\u00a0\u00a0\u00a0\u00a0 <div>great<\/div>
                        5\u00a0\u00a0\u00a0\u00a0 <u>!<\/u><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

                        \n\t\t\t\t
                        \n\t\t\t\t\t\t\t\t\t

                        \u50cf\u9019\u7a2e html \u6703\u88ab\u88ab HTML\u6a19\u7c64\u5305\u8d77\u4f86\u7684\u554f\u984c\uff0c\u5982\u679c\u9700\u8981\u81f3\u627e\u5230\u6a19\u7c64\u8a9e\u8a00\uff0c\u53ef\u4ee5\u900f\u904e\u56de\u6714\u529f\u80fd<\/p>

                        • \\1 \u7684\u90e8\u5206\uff0c\u6703\u56de\u53bb\u53c3\u8003\u7b2c\u4e00\u500b\u8868\u793a\u5f0f(\u7b2c\u4e00\u500b\u5c0f\u62ec\u865f\u88e1\u9762\u7684)<\/span><\/li>
                        • \\1 \u4ee3\u8868\u7b2c\u4e00\u7d44\u5c0f\u62ec\u865f\uff0c\\2\u4ee3\u8868\u7b2c\u4e8c\u7d44\uff0c\u4ee5\u6b64\u985e\u63a8<\/span><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
                          \n\t\t\t\t
                          \n\t\t\t\t\t\t\t\t\t

                          $ egrep ‘<([A-Za-z]*)>.*<\/\\1> tags.txt<\/p>

                          <i>line<\/i>
                          <div>great<\/div>
                          <u>!<\/u><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

                          \n\t\t\t\t
                          \n\t\t\t\t\t

                          \u5b9a\u4f4d\u7b26\u865f & \u5b57\u8a5e\u908a\u754c<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
                          \n\t\t\t\t
                          \n\t\t\t\t\t\t\t\t\t
                          • \u6ea2\u51fa\u5b57\u5143(^)\u5c31\u662f\u5c07\u6a23\u5f0f\u9396\u5728\u5b57\u4e32\u958b\u982d<\/span>
                            • ^[1-5]\u4ee3\u8868\u9700\u8981\u5f0f1\u52305\u958b\u982d\u624d\u7b97\u7b26\u5408<\/li><\/ul><\/li>
                            • $\u5b57\u5143\u5247\u662f\u5c07\u6a23\u5f0f\u9396\u5728\u7d50\u5c3e<\/span>
                              • [1-5]$\u5247\u662f\u5fc5\u98081\u52305\u505a\u7d50\u5c3e\u624d\u7b97\u7b26\u5408<\/li><\/ul><\/li>
                              • \\b \u5247\u662f\u7528\u4f86\u754c\u5b9a\u5b57\u8a5e\u908a\u754c(\u4f8b\u5982\u7a7a\u767d)<\/span>
                                • \\b[1-5]\\b \u5247\u4ee3\u8868\u6703\u6bd4\u5c0d\u51fa\u4efb\u4f55\u4ecb\u65bc\u7a7a\u9593\u4e4b\u9593\u76841\u52305\u7684\u6578\u5b57<\/li><\/ul><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
                                  \n\t\t\t\t
                                  \n\t\t\t\t\t

                                  \u76f8\u95dc\u8cc7\u6e90<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
                                  \n\t\t\t\t
                                  \n\t\t\t\t\t\t\t\t\t
                                  • http:\/\/www.rexegg.com\/<\/li>
                                  • https:\/\/regex101.com\/<\/li>
                                  • https:\/\/www.regextester.com\/<\/li>
                                  • https:\/\/www.regular-expressions.info\/<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

                                    \u6b63\u898f\u8868\u793a\u6cd5 \u6b63\u898f\u8868\u793a\u5f0f ( Regular expressions , \u7c21\u7a31 regex ) \u662f\u4e00\u7a2e\u7528\u4f86\u6bd4\u5c0d\u6587\u5b57\u7684\u65b9\u6cd5\uff0c\u76f8\u7576\u4fbf\u5229\u3002 \u5728 bash \u4e2d\uff0c\u53ea\u6709\u8907\u5408\u5f0f\u6307\u4ee4\u624d\u6703\u4f7f\u7528\u5230\u6b63\u898f\u8868\u793a\u5f0f\uff0c\u4f46\u662f\u9084\u662f\u75d5\u503c\u5f97\u5b78\u7fd2\uff0c\u56e0\u70ba\u6b63\u898f\u8868\u793a\u5f0f\u6703\u727d\u626f\u5230\u5f88\u591a\u5de5\u5177\uff0c\u50cf\u662f grep\u3001awk \u548c sed \u7b49\u7b49\u3002 \u7bc4\u4f8b\u6587\u4ef6 – frost.txt 1 \u00a0 \u00a0 Two roads diverged in a yellow wood, 2\u00a0\u00a0\u00a0\u00a0 And sorry I could not travel both 3 \u00a0 \u00a0 And be one traveler,long I stood 4\u00a0\u00a0\u00a0\u00a0 And looked down one as far as I could 5\u00a0\u00a0\u00a0\u00a0 To Where it bent in the undergrowth; 6 7 Excerpt from The Road Not Taken by Robert Frosr \u6b63\u898f\u8868\u793a\u5f0f – grep \u70ba\u65b9\u4fbf\u5c55\u793a\uff0c\u4e0b\u65b9\u4f7f\u7528grep\u9032\u884c\u6b63\u898f\u8868\u793a\u5f0f\u7684\u8b1b\u89e3\u3002grep \u6307\u4ee4\u901a\u5e38\u7528\u65bc\u6a94\u6848\u5167\u5bb9\u7684\u641c\u5c0b\u3002\u900f\u904e\u6307\u5b9a\u6a23\u5f0f\uff0c\u53ef\u4ee5\u6bd4\u5c0d\u4f7f\u5426\u6709\u7b26\u5408\u689d\u4ef6\u7684\u5167\u5bb9\u3002 \u7528\u6cd5 grep options pattern filenames (\u9078\u9805)\u00a0\u00a0\u00a0 (\u53c3\u6578)\u00a0\u00a0\u00a0\u00a0\u00a0 (\u6a94\u540d) \u5e38\u7528\u6307\u4ee4 – c : \u8a08\u7b97\u7b26\u5408\u6bd4\u5c0d\u6a23\u5f0f\u7684\u884c\u6578\u3002 -E : \u555f\u7528\u66f4\u5ee3\u7fa9\u7684\u6b63\u898f\u8868\u793a\u5f0f\u3002 -f : \u5f9e\u6307\u5b9a\u6a94\u6848\u8b80\u53d6\u8981\u641c\u5c0b\u7684\u6a23\u5f0f\u3002\u6a94\u6848\u4e2d\u53ef\u4ee5\u5305\u542b\u591a\u7a2e\u6a23\u5f0f\u3002\u4e00\u884c\u8868\u793a\u4e00\u7a2e\u6a23\u5f0f\u3002 -i : \u5ffd\u7565\u5b57\u5143\u5927\u5c0f\u5beb\u3002 -l : \u53ea\u5370\u51fa\u7b26\u5408\u6bd4\u5c0d\u6a23\u5f0f\u7684\u6a94\u6848\u540d\u7a31\u548c\u8def\u5f91\u3002 -n : \u5370\u51fa\u6a94\u6848\u4e2d\u7b26\u5408\u6bd4\u5c0d\u6a23\u5f0f\u7684\u884c\u865f\u3002 -P : \u555f\u7528 Perl \u7684\u6b63\u898f\u8868\u793a\u5f0f\u5f15\u64ce\u3002 -R,r : \u905e\u8ff4\u641c\u5c0b\u5b50\u76ee\u7da0\u3002 \u8209\u4f8b \u82e5\u9700\u8981\u5728\u5bb6\u76ee\u9304\u548c\u5176\u5b50\u76ee\u9304\u641c\u5c0b\u542b\u6709 security \u5b57\u6a23\u7684\u6a94\u6848\uff0c\u6307\u4ee4\u5982\u4e0b\u6240\u793a : grep -R -i ‘security’\u00a0 \/home \u6b63\u898f\u8868\u793a\u5f0f\u7684\u4e2d\u4ecb\u5b57\u7b26 “\u6b63\u898f\u8868\u793a\u5f0f” \u5176\u5be6\u5c31\u662f\u4e2d\u4ecb\u5b57\u7b26\u548c\u5f88\u591a\u5b57\u5143\u6240\u7d44\u5408\u7684\u6a23\u5f0f\u3002 \u5728\u6b63\u898f\u8868\u793a\u5f0f\u4e2d\uff0c\u6709\u5f88\u591a\u7279\u6b8a\u7b26\u865f\u6709\u7279\u6b8a\u610f\u7fa9\u3002 \u4e2d\u4ecb\u5b57\u7b26 \u53e5\u865f ( . ) \u4ee3\u8868\u55ae\u4e00\u842c\u7528\u5b57\u5143 \u53ef\u4ee5\u6bd4\u5c0d\u51fa\u4efb\u4f55\u55ae\u4e00\u5b57\u5143\uff0c\u63db\u884c\u5b57\u5143\u4f8b\u5916 $\u00a0 grep \u2018T.o\u2019 frost.txt 1 \u00a0 \u00a0 Two roads diverged in a yellow wood, \u554f\u865f ( ? ) \u554f\u865f\u6703\u8b93\u5b83\u524d\u9762\u7684\u4efb\u4f55\u9805\u76ee\u90fd\u8b8a\u5f97\u53ef\u6709\u53ef\u7121 \u5141\u8a31\u51fa\u73fe\u4e00\u500b\u3001\u6216\u662f\u6c92\u6709\u9805\u76ee $ egrep \u2018T.?o\u2019 frost.txt 1 \u00a0 \u00a0 Two roads diverged in a yellow wood, 5\u00a0\u00a0\u00a0\u00a0 To Where it bent in the undergrowth; \u661f\u865f ( * ) \u6bd4\u5c0d\u51fa\u51fa\u73fe\u904e1\u6b21\u4ee5\u4e0a\u3001\u6216\u662f\u6839\u672c\u672a\u51fa\u73fe \u8207 ? \u5f88\u50cf\uff0c\u5dee\u5225\u5728\u65bc\u5141\u8a31\u6b21\u6578\u4e00\u6b21\u4ee5\u4e0a $ grep \u2018T.*o\u2019 frost.txt 1 \u00a0 \u00a0 Two roads diverged in a yellow wood, 5\u00a0\u00a0\u00a0\u00a0 To Where it bent in the undergrowth; 7 Excerpt from The Road Not Taken by Robert Frosr \u52a0\u865f ( + ) \u8207\u661f\u865f\u4e00\u6a23\uff0c\u4f46\u5fc5\u9808\u8981\u6c42\u4e00\u6b21\u4ee5\u4e0a \u6703\u6bd4\u5c0d\u51fa\u51fa\u73fe\u81f3\u5c11\u4e00\u6b21\u7684\u524d\u7f6e\u6a23\u5f0f $ egrep \u2018T.+o\u2019 frost.txt 1 \u00a0 \u00a0 Two roads diverged in a yellow wood, 5\u00a0\u00a0\u00a0\u00a0 To Where it bent in the undergrowth; 7 Excerpt from The Road Not Taken by Robert Frosr \u7fa4\u805a \u900f\u904e\u5c0f\u62ec\u5f27\u4f86\u96c6\u5408\u5b57\u5143 \u5141\u8a31\u5c07\u51fa\u73fe\u5728\u8a87\u80e1\u4e2d\u7684\u5b57\u5143\u8996\u70ba\u4e8b\u5f8c\u53ef\u4ee5\u6bd4\u5c0d\u53c3\u7167\u7684\u55ae\u4e00\u9805\u76ee $ egrep \u2018And be one (stranger|traveler), long I stood\u2019 frost.txt 3 \u00a0 \u00a0 And be one traveler,long I stood \u4e2d\u62ec\u865f\u548c\u5b57\u5143\u7a2e\u985e \u4e2d\u62ec\u865f\u901a\u5e38\u7528\u4f86\u5b9a\u7fa9\u5b57\u5143\u7a2e\u985e\uff0c\u8a73\u7d30\u5982\u4e0b\u6240\u793a : [abc] : \u53ea\u6bd4\u5c0d\u51faa\u3001b\u3001c [1-5] : \u53ea\u6bd4\u5c0d\u51fa1~5\u7684\u6578\u5b57 [a-zA-Z] : \u53ea\u6bd4\u5c0d\u51fa\u5927\u5beb\u6216\u5c0f\u5beb\u7684\u82f1\u6587\u5b57\u6bcd [0-9\u00b1*\/] : \u53ea\u6bd4\u5c0d\u51fa\u6578\u5b57\u6216\u662f\u56db\u5247\u904b\u7b97 [0-9a-fA-F] : \u53ea\u6bd4\u5c0d\u51fa16\u9032\u4f4d\u6578\u5b57 \u6377\u5f91 \u6709\u4e00\u7cfb\u5217\u9810\u5148\u5b9a\u7fa9\u597d\u7684\u5b57\u5143\u7a2e\u985e\uff0c\u7a31\u4e4b\u70ba\u6377\u5f91 s : \u7a7a\u767d S : \u975e\u7a7a\u767d d : \u6578\u5b57 D : \u975e\u6578\u5b57 w : \u5b57\u8a5e W : \u975e\u5b57\u8a5e x : \u5341\u516d\u9032\u4f4d\u6578\u5b57(\u4f8b\u59820x5F \u9700\u8981\u6ce8\u610f\u6ce8\u610f\uff0c egrep \u4e0d\u652f\u63f4\u6377\u5f91 \u9700\u8981\u5229\u7528grep -P \u4e00\u7cfb\u5217\u5b57…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[17,5],"tags":[],"class_list":["post-202","post","type-post","status-publish","format-standard","hentry","category-bash","category-research-study"],"yoast_head":"\nbash \u2013 \u57fa\u672c\u6587\u6cd5\u6559\u5b78 #3 - Ares Vlog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.yuyiares.com\/?p=202\" \/>\n<meta property=\"og:locale\" content=\"zh_TW\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"bash \u2013 \u57fa\u672c\u6587\u6cd5\u6559\u5b78 #3 - Ares Vlog\" \/>\n<meta property=\"og:description\" content=\"\u6b63\u898f\u8868\u793a\u6cd5 \u6b63\u898f\u8868\u793a\u5f0f ( Regular expressions , \u7c21\u7a31 regex ) \u662f\u4e00\u7a2e\u7528\u4f86\u6bd4\u5c0d\u6587\u5b57\u7684\u65b9\u6cd5\uff0c\u76f8\u7576\u4fbf\u5229\u3002 \u5728 bash \u4e2d\uff0c\u53ea\u6709\u8907\u5408\u5f0f\u6307\u4ee4\u624d\u6703\u4f7f\u7528\u5230\u6b63\u898f\u8868\u793a\u5f0f\uff0c\u4f46\u662f\u9084\u662f\u75d5\u503c\u5f97\u5b78\u7fd2\uff0c\u56e0\u70ba\u6b63\u898f\u8868\u793a\u5f0f\u6703\u727d\u626f\u5230\u5f88\u591a\u5de5\u5177\uff0c\u50cf\u662f grep\u3001awk \u548c sed \u7b49\u7b49\u3002 \u7bc4\u4f8b\u6587\u4ef6 – frost.txt 1 \u00a0 \u00a0 Two roads diverged in a yellow wood, 2\u00a0\u00a0\u00a0\u00a0 And sorry I could not travel both 3 \u00a0 \u00a0 And be one traveler,long I stood 4\u00a0\u00a0\u00a0\u00a0 And looked down one as far as I could 5\u00a0\u00a0\u00a0\u00a0 To Where it bent in the undergrowth; 6 7 Excerpt from The Road Not Taken by Robert Frosr \u6b63\u898f\u8868\u793a\u5f0f – grep \u70ba\u65b9\u4fbf\u5c55\u793a\uff0c\u4e0b\u65b9\u4f7f\u7528grep\u9032\u884c\u6b63\u898f\u8868\u793a\u5f0f\u7684\u8b1b\u89e3\u3002grep \u6307\u4ee4\u901a\u5e38\u7528\u65bc\u6a94\u6848\u5167\u5bb9\u7684\u641c\u5c0b\u3002\u900f\u904e\u6307\u5b9a\u6a23\u5f0f\uff0c\u53ef\u4ee5\u6bd4\u5c0d\u4f7f\u5426\u6709\u7b26\u5408\u689d\u4ef6\u7684\u5167\u5bb9\u3002 \u7528\u6cd5 grep options pattern filenames (\u9078\u9805)\u00a0\u00a0\u00a0 (\u53c3\u6578)\u00a0\u00a0\u00a0\u00a0\u00a0 (\u6a94\u540d) \u5e38\u7528\u6307\u4ee4 – c : \u8a08\u7b97\u7b26\u5408\u6bd4\u5c0d\u6a23\u5f0f\u7684\u884c\u6578\u3002 -E : \u555f\u7528\u66f4\u5ee3\u7fa9\u7684\u6b63\u898f\u8868\u793a\u5f0f\u3002 -f : \u5f9e\u6307\u5b9a\u6a94\u6848\u8b80\u53d6\u8981\u641c\u5c0b\u7684\u6a23\u5f0f\u3002\u6a94\u6848\u4e2d\u53ef\u4ee5\u5305\u542b\u591a\u7a2e\u6a23\u5f0f\u3002\u4e00\u884c\u8868\u793a\u4e00\u7a2e\u6a23\u5f0f\u3002 -i : \u5ffd\u7565\u5b57\u5143\u5927\u5c0f\u5beb\u3002 -l : \u53ea\u5370\u51fa\u7b26\u5408\u6bd4\u5c0d\u6a23\u5f0f\u7684\u6a94\u6848\u540d\u7a31\u548c\u8def\u5f91\u3002 -n : \u5370\u51fa\u6a94\u6848\u4e2d\u7b26\u5408\u6bd4\u5c0d\u6a23\u5f0f\u7684\u884c\u865f\u3002 -P : \u555f\u7528 Perl \u7684\u6b63\u898f\u8868\u793a\u5f0f\u5f15\u64ce\u3002 -R,r : \u905e\u8ff4\u641c\u5c0b\u5b50\u76ee\u7da0\u3002 \u8209\u4f8b \u82e5\u9700\u8981\u5728\u5bb6\u76ee\u9304\u548c\u5176\u5b50\u76ee\u9304\u641c\u5c0b\u542b\u6709 security \u5b57\u6a23\u7684\u6a94\u6848\uff0c\u6307\u4ee4\u5982\u4e0b\u6240\u793a : grep -R -i ‘security’\u00a0 \/home \u6b63\u898f\u8868\u793a\u5f0f\u7684\u4e2d\u4ecb\u5b57\u7b26 “\u6b63\u898f\u8868\u793a\u5f0f” \u5176\u5be6\u5c31\u662f\u4e2d\u4ecb\u5b57\u7b26\u548c\u5f88\u591a\u5b57\u5143\u6240\u7d44\u5408\u7684\u6a23\u5f0f\u3002 \u5728\u6b63\u898f\u8868\u793a\u5f0f\u4e2d\uff0c\u6709\u5f88\u591a\u7279\u6b8a\u7b26\u865f\u6709\u7279\u6b8a\u610f\u7fa9\u3002 \u4e2d\u4ecb\u5b57\u7b26 \u53e5\u865f ( . ) \u4ee3\u8868\u55ae\u4e00\u842c\u7528\u5b57\u5143 \u53ef\u4ee5\u6bd4\u5c0d\u51fa\u4efb\u4f55\u55ae\u4e00\u5b57\u5143\uff0c\u63db\u884c\u5b57\u5143\u4f8b\u5916 $\u00a0 grep \u2018T.o\u2019 frost.txt 1 \u00a0 \u00a0 Two roads diverged in a yellow wood, \u554f\u865f ( ? ) \u554f\u865f\u6703\u8b93\u5b83\u524d\u9762\u7684\u4efb\u4f55\u9805\u76ee\u90fd\u8b8a\u5f97\u53ef\u6709\u53ef\u7121 \u5141\u8a31\u51fa\u73fe\u4e00\u500b\u3001\u6216\u662f\u6c92\u6709\u9805\u76ee $ egrep \u2018T.?o\u2019 frost.txt 1 \u00a0 \u00a0 Two roads diverged in a yellow wood, 5\u00a0\u00a0\u00a0\u00a0 To Where it bent in the undergrowth; \u661f\u865f ( * ) \u6bd4\u5c0d\u51fa\u51fa\u73fe\u904e1\u6b21\u4ee5\u4e0a\u3001\u6216\u662f\u6839\u672c\u672a\u51fa\u73fe \u8207 ? \u5f88\u50cf\uff0c\u5dee\u5225\u5728\u65bc\u5141\u8a31\u6b21\u6578\u4e00\u6b21\u4ee5\u4e0a $ grep \u2018T.*o\u2019 frost.txt 1 \u00a0 \u00a0 Two roads diverged in a yellow wood, 5\u00a0\u00a0\u00a0\u00a0 To Where it bent in the undergrowth; 7 Excerpt from The Road Not Taken by Robert Frosr \u52a0\u865f ( + ) \u8207\u661f\u865f\u4e00\u6a23\uff0c\u4f46\u5fc5\u9808\u8981\u6c42\u4e00\u6b21\u4ee5\u4e0a \u6703\u6bd4\u5c0d\u51fa\u51fa\u73fe\u81f3\u5c11\u4e00\u6b21\u7684\u524d\u7f6e\u6a23\u5f0f $ egrep \u2018T.+o\u2019 frost.txt 1 \u00a0 \u00a0 Two roads diverged in a yellow wood, 5\u00a0\u00a0\u00a0\u00a0 To Where it bent in the undergrowth; 7 Excerpt from The Road Not Taken by Robert Frosr \u7fa4\u805a \u900f\u904e\u5c0f\u62ec\u5f27\u4f86\u96c6\u5408\u5b57\u5143 \u5141\u8a31\u5c07\u51fa\u73fe\u5728\u8a87\u80e1\u4e2d\u7684\u5b57\u5143\u8996\u70ba\u4e8b\u5f8c\u53ef\u4ee5\u6bd4\u5c0d\u53c3\u7167\u7684\u55ae\u4e00\u9805\u76ee $ egrep \u2018And be one (stranger|traveler), long I stood\u2019 frost.txt 3 \u00a0 \u00a0 And be one traveler,long I stood \u4e2d\u62ec\u865f\u548c\u5b57\u5143\u7a2e\u985e \u4e2d\u62ec\u865f\u901a\u5e38\u7528\u4f86\u5b9a\u7fa9\u5b57\u5143\u7a2e\u985e\uff0c\u8a73\u7d30\u5982\u4e0b\u6240\u793a : [abc] : \u53ea\u6bd4\u5c0d\u51faa\u3001b\u3001c [1-5] : \u53ea\u6bd4\u5c0d\u51fa1~5\u7684\u6578\u5b57 [a-zA-Z] : \u53ea\u6bd4\u5c0d\u51fa\u5927\u5beb\u6216\u5c0f\u5beb\u7684\u82f1\u6587\u5b57\u6bcd [0-9\u00b1*\/] : \u53ea\u6bd4\u5c0d\u51fa\u6578\u5b57\u6216\u662f\u56db\u5247\u904b\u7b97 [0-9a-fA-F] : \u53ea\u6bd4\u5c0d\u51fa16\u9032\u4f4d\u6578\u5b57 \u6377\u5f91 \u6709\u4e00\u7cfb\u5217\u9810\u5148\u5b9a\u7fa9\u597d\u7684\u5b57\u5143\u7a2e\u985e\uff0c\u7a31\u4e4b\u70ba\u6377\u5f91 s : \u7a7a\u767d S : \u975e\u7a7a\u767d d : \u6578\u5b57 D : \u975e\u6578\u5b57 w : \u5b57\u8a5e W : \u975e\u5b57\u8a5e x : \u5341\u516d\u9032\u4f4d\u6578\u5b57(\u4f8b\u59820x5F \u9700\u8981\u6ce8\u610f\u6ce8\u610f\uff0c egrep \u4e0d\u652f\u63f4\u6377\u5f91 \u9700\u8981\u5229\u7528grep -P \u4e00\u7cfb\u5217\u5b57...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.yuyiares.com\/?p=202\" \/>\n<meta property=\"og:site_name\" content=\"Ares Vlog\" \/>\n<meta property=\"article:published_time\" 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\/ Yoast SEO plugin. -->","yoast_head_json":{"title":"bash \u2013 \u57fa\u672c\u6587\u6cd5\u6559\u5b78 #3 - Ares Vlog","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.yuyiares.com\/?p=202","og_locale":"zh_TW","og_type":"article","og_title":"bash \u2013 \u57fa\u672c\u6587\u6cd5\u6559\u5b78 #3 - Ares Vlog","og_description":"\u6b63\u898f\u8868\u793a\u6cd5 \u6b63\u898f\u8868\u793a\u5f0f ( Regular expressions , \u7c21\u7a31 regex ) \u662f\u4e00\u7a2e\u7528\u4f86\u6bd4\u5c0d\u6587\u5b57\u7684\u65b9\u6cd5\uff0c\u76f8\u7576\u4fbf\u5229\u3002 \u5728 bash \u4e2d\uff0c\u53ea\u6709\u8907\u5408\u5f0f\u6307\u4ee4\u624d\u6703\u4f7f\u7528\u5230\u6b63\u898f\u8868\u793a\u5f0f\uff0c\u4f46\u662f\u9084\u662f\u75d5\u503c\u5f97\u5b78\u7fd2\uff0c\u56e0\u70ba\u6b63\u898f\u8868\u793a\u5f0f\u6703\u727d\u626f\u5230\u5f88\u591a\u5de5\u5177\uff0c\u50cf\u662f grep\u3001awk \u548c sed \u7b49\u7b49\u3002 \u7bc4\u4f8b\u6587\u4ef6 – frost.txt 1 \u00a0 \u00a0 Two roads diverged in a yellow wood, 2\u00a0\u00a0\u00a0\u00a0 And sorry I could not travel both 3 \u00a0 \u00a0 And be one traveler,long I stood 4\u00a0\u00a0\u00a0\u00a0 And looked down one as far as I could 5\u00a0\u00a0\u00a0\u00a0 To Where it bent in the undergrowth; 6 7 Excerpt from The Road Not Taken by Robert Frosr \u6b63\u898f\u8868\u793a\u5f0f – grep \u70ba\u65b9\u4fbf\u5c55\u793a\uff0c\u4e0b\u65b9\u4f7f\u7528grep\u9032\u884c\u6b63\u898f\u8868\u793a\u5f0f\u7684\u8b1b\u89e3\u3002grep \u6307\u4ee4\u901a\u5e38\u7528\u65bc\u6a94\u6848\u5167\u5bb9\u7684\u641c\u5c0b\u3002\u900f\u904e\u6307\u5b9a\u6a23\u5f0f\uff0c\u53ef\u4ee5\u6bd4\u5c0d\u4f7f\u5426\u6709\u7b26\u5408\u689d\u4ef6\u7684\u5167\u5bb9\u3002 \u7528\u6cd5 grep options pattern filenames (\u9078\u9805)\u00a0\u00a0\u00a0 (\u53c3\u6578)\u00a0\u00a0\u00a0\u00a0\u00a0 (\u6a94\u540d) \u5e38\u7528\u6307\u4ee4 – c : \u8a08\u7b97\u7b26\u5408\u6bd4\u5c0d\u6a23\u5f0f\u7684\u884c\u6578\u3002 -E : \u555f\u7528\u66f4\u5ee3\u7fa9\u7684\u6b63\u898f\u8868\u793a\u5f0f\u3002 -f : \u5f9e\u6307\u5b9a\u6a94\u6848\u8b80\u53d6\u8981\u641c\u5c0b\u7684\u6a23\u5f0f\u3002\u6a94\u6848\u4e2d\u53ef\u4ee5\u5305\u542b\u591a\u7a2e\u6a23\u5f0f\u3002\u4e00\u884c\u8868\u793a\u4e00\u7a2e\u6a23\u5f0f\u3002 -i : \u5ffd\u7565\u5b57\u5143\u5927\u5c0f\u5beb\u3002 -l : \u53ea\u5370\u51fa\u7b26\u5408\u6bd4\u5c0d\u6a23\u5f0f\u7684\u6a94\u6848\u540d\u7a31\u548c\u8def\u5f91\u3002 -n : \u5370\u51fa\u6a94\u6848\u4e2d\u7b26\u5408\u6bd4\u5c0d\u6a23\u5f0f\u7684\u884c\u865f\u3002 -P : \u555f\u7528 Perl \u7684\u6b63\u898f\u8868\u793a\u5f0f\u5f15\u64ce\u3002 -R,r : \u905e\u8ff4\u641c\u5c0b\u5b50\u76ee\u7da0\u3002 \u8209\u4f8b \u82e5\u9700\u8981\u5728\u5bb6\u76ee\u9304\u548c\u5176\u5b50\u76ee\u9304\u641c\u5c0b\u542b\u6709 security \u5b57\u6a23\u7684\u6a94\u6848\uff0c\u6307\u4ee4\u5982\u4e0b\u6240\u793a : grep -R -i ‘security’\u00a0 \/home \u6b63\u898f\u8868\u793a\u5f0f\u7684\u4e2d\u4ecb\u5b57\u7b26 “\u6b63\u898f\u8868\u793a\u5f0f” \u5176\u5be6\u5c31\u662f\u4e2d\u4ecb\u5b57\u7b26\u548c\u5f88\u591a\u5b57\u5143\u6240\u7d44\u5408\u7684\u6a23\u5f0f\u3002 \u5728\u6b63\u898f\u8868\u793a\u5f0f\u4e2d\uff0c\u6709\u5f88\u591a\u7279\u6b8a\u7b26\u865f\u6709\u7279\u6b8a\u610f\u7fa9\u3002 \u4e2d\u4ecb\u5b57\u7b26 \u53e5\u865f ( . ) \u4ee3\u8868\u55ae\u4e00\u842c\u7528\u5b57\u5143 \u53ef\u4ee5\u6bd4\u5c0d\u51fa\u4efb\u4f55\u55ae\u4e00\u5b57\u5143\uff0c\u63db\u884c\u5b57\u5143\u4f8b\u5916 $\u00a0 grep \u2018T.o\u2019 frost.txt 1 \u00a0 \u00a0 Two roads diverged in a yellow wood, \u554f\u865f ( ? ) \u554f\u865f\u6703\u8b93\u5b83\u524d\u9762\u7684\u4efb\u4f55\u9805\u76ee\u90fd\u8b8a\u5f97\u53ef\u6709\u53ef\u7121 \u5141\u8a31\u51fa\u73fe\u4e00\u500b\u3001\u6216\u662f\u6c92\u6709\u9805\u76ee $ egrep \u2018T.?o\u2019 frost.txt 1 \u00a0 \u00a0 Two roads diverged in a yellow wood, 5\u00a0\u00a0\u00a0\u00a0 To Where it bent in the undergrowth; \u661f\u865f ( * ) \u6bd4\u5c0d\u51fa\u51fa\u73fe\u904e1\u6b21\u4ee5\u4e0a\u3001\u6216\u662f\u6839\u672c\u672a\u51fa\u73fe \u8207 ? \u5f88\u50cf\uff0c\u5dee\u5225\u5728\u65bc\u5141\u8a31\u6b21\u6578\u4e00\u6b21\u4ee5\u4e0a $ grep \u2018T.*o\u2019 frost.txt 1 \u00a0 \u00a0 Two roads diverged in a yellow wood, 5\u00a0\u00a0\u00a0\u00a0 To Where it bent in the undergrowth; 7 Excerpt from The Road Not Taken by Robert Frosr \u52a0\u865f ( + ) \u8207\u661f\u865f\u4e00\u6a23\uff0c\u4f46\u5fc5\u9808\u8981\u6c42\u4e00\u6b21\u4ee5\u4e0a \u6703\u6bd4\u5c0d\u51fa\u51fa\u73fe\u81f3\u5c11\u4e00\u6b21\u7684\u524d\u7f6e\u6a23\u5f0f $ egrep \u2018T.+o\u2019 frost.txt 1 \u00a0 \u00a0 Two roads diverged in a yellow wood, 5\u00a0\u00a0\u00a0\u00a0 To Where it bent in the undergrowth; 7 Excerpt from The Road Not Taken by Robert Frosr \u7fa4\u805a \u900f\u904e\u5c0f\u62ec\u5f27\u4f86\u96c6\u5408\u5b57\u5143 \u5141\u8a31\u5c07\u51fa\u73fe\u5728\u8a87\u80e1\u4e2d\u7684\u5b57\u5143\u8996\u70ba\u4e8b\u5f8c\u53ef\u4ee5\u6bd4\u5c0d\u53c3\u7167\u7684\u55ae\u4e00\u9805\u76ee $ egrep \u2018And be one (stranger|traveler), long I stood\u2019 frost.txt 3 \u00a0 \u00a0 And be one traveler,long I stood \u4e2d\u62ec\u865f\u548c\u5b57\u5143\u7a2e\u985e \u4e2d\u62ec\u865f\u901a\u5e38\u7528\u4f86\u5b9a\u7fa9\u5b57\u5143\u7a2e\u985e\uff0c\u8a73\u7d30\u5982\u4e0b\u6240\u793a : [abc] : \u53ea\u6bd4\u5c0d\u51faa\u3001b\u3001c [1-5] : \u53ea\u6bd4\u5c0d\u51fa1~5\u7684\u6578\u5b57 [a-zA-Z] : \u53ea\u6bd4\u5c0d\u51fa\u5927\u5beb\u6216\u5c0f\u5beb\u7684\u82f1\u6587\u5b57\u6bcd [0-9\u00b1*\/] : \u53ea\u6bd4\u5c0d\u51fa\u6578\u5b57\u6216\u662f\u56db\u5247\u904b\u7b97 [0-9a-fA-F] : \u53ea\u6bd4\u5c0d\u51fa16\u9032\u4f4d\u6578\u5b57 \u6377\u5f91 \u6709\u4e00\u7cfb\u5217\u9810\u5148\u5b9a\u7fa9\u597d\u7684\u5b57\u5143\u7a2e\u985e\uff0c\u7a31\u4e4b\u70ba\u6377\u5f91 s : \u7a7a\u767d S : \u975e\u7a7a\u767d d : \u6578\u5b57 D : \u975e\u6578\u5b57 w : \u5b57\u8a5e W : \u975e\u5b57\u8a5e x : \u5341\u516d\u9032\u4f4d\u6578\u5b57(\u4f8b\u59820x5F \u9700\u8981\u6ce8\u610f\u6ce8\u610f\uff0c egrep \u4e0d\u652f\u63f4\u6377\u5f91 \u9700\u8981\u5229\u7528grep -P \u4e00\u7cfb\u5217\u5b57...","og_url":"https:\/\/www.yuyiares.com\/?p=202","og_site_name":"Ares Vlog","article_published_time":"2022-01-20T11:44:43+00:00","article_modified_time":"2022-09-30T05:09:51+00:00","author":"admin","twitter_card":"summary_large_image","twitter_misc":{"\u4f5c\u8005:":"admin","\u9810\u4f30\u95b1\u8b80\u6642\u9593":"2 \u5206\u9418"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.yuyiares.com\/?p=202#article","isPartOf":{"@id":"https:\/\/www.yuyiares.com\/?p=202"},"author":{"name":"admin","@id":"https:\/\/www.yuyiares.com\/#\/schema\/person\/3d4db07eab24e08cc9eea662ef3053ac"},"headline":"bash \u2013 \u57fa\u672c\u6587\u6cd5\u6559\u5b78 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