{"id":9120,"date":"2022-04-14T11:18:38","date_gmt":"2022-04-14T03:18:38","guid":{"rendered":"https:\/\/www.gbase8.cn\/?p=9120"},"modified":"2022-04-14T11:23:13","modified_gmt":"2022-04-14T03:23:13","slug":"linux-grep-%e5%91%bd%e4%bb%a4%e4%b8%8d%e8%bf%94%e5%9b%9e%e5%8c%b9%e9%85%8d%e7%9a%84%e6%95%b4%e8%a1%8c%e6%96%87%e5%ad%97%ef%bc%8c%e5%8f%aa%e8%bf%94%e5%9b%9e%e5%8c%b9%e9%85%8d%e5%88%b0%e7%9a%84%e6%89%80","status":"publish","type":"post","link":"https:\/\/www.gbase8.cn\/en\/9120","title":{"rendered":"Linux grep only returns the matching portion of the content, not the entire line."},"content":{"rendered":"<p>linux\u4e0b\u7684grep\u53ef\u4ee5\u5bf9\u6587\u4ef6\u8fdb\u884c\u8fc7\u6ee4\uff0c\u5e76\u8fd4\u56de\u5339\u914d\u5230\u7684\u884c\uff0c\u4f46\u6709\u65f6\u6211\u4eec\u53ea\u9700\u8981\u5339\u914d\u884c\u4e2d\u7684\u90e8\u5206\u5185\u5bb9\uff0c\u800c\u4e0d\u662f\u6574\u884c\uff0c\u4e00\u822c\u90fd\u662f\u7528awk\u7b49\u5bf9\u5339\u914d\u884c\u8fdb\u884c\u4e8c\u6b21\u5207\u5206\u7b49\u3002\u672c\u6587\u4ecb\u7ecd\u4e00\u79cd\u7528grep\u6b63\u5219\u5339\u914d\u6a21\u5f0f\u53ea\u8fd4\u56de\u6240\u9700\u90e8\u5206\u7684\u5185\u5bb9\uff0c\u5305\u62ec\u4e00\u884c\u6570\u636e\u91cc\u5339\u914d\u5230\u591a\u4e2a\u7ed3\u679c\u3002<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_84 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Directory Navigation<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-6a2a94157448a\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-6a2a94157448a\"  aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.gbase8.cn\/en\/9120\/#%E5%8F%82%E6%95%B0\" >\u53c2\u6570<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.gbase8.cn\/en\/9120\/#%E6%AD%A3%E5%88%99%E8%A1%A8%E8%BE%BE%E5%BC%8F_Pattern\" >\u6b63\u5219\u8868\u8fbe\u5f0f Pattern<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.gbase8.cn\/en\/9120\/#i\" >(?&lt;=)  \u96f6\u5bbd\u5ea6\u6b63\u9884\u6d4b\u5148\u884c\u65ad\u8a00<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.gbase8.cn\/en\/9120\/#i-2\" >(?&lt;=exp)\u96f6\u5bbd\u5ea6\u6b63\u56de\u987e\u540e\u53d1\u65ad\u8a00<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.gbase8.cn\/en\/9120\/#%E5%8C%B9%E9%85%8D%E5%86%85%E5%AE%B9\" >(.+?)\u5339\u914d\u5185\u5bb9<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.gbase8.cn\/en\/9120\/#%E6%A0%B7%E4%BE%8B\" >\u6837\u4f8b<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.gbase8.cn\/en\/9120\/#%E9%BB%98%E8%AE%A4%E5%8C%B9%E9%85%8D%E8%BF%94%E5%9B%9E%E6%95%B4%E8%A1%8C\" >\u9ed8\u8ba4\u5339\u914d\u8fd4\u56de\u6574\u884c<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.gbase8.cn\/en\/9120\/#%E4%B8%80%E8%A1%8C%E4%B8%80%E4%B8%AA%E5%8C%B9%E9%85%8D%E7%BB%93%E6%9E%9C\" >\u4e00\u884c\u4e00\u4e2a\u5339\u914d\u7ed3\u679c<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.gbase8.cn\/en\/9120\/#%E4%B8%80%E8%A1%8C%E5%A4%9A%E4%B8%AA%E5%8C%B9%E9%85%8D%E7%BB%93%E6%9E%9C\" >\u4e00\u884c\u591a\u4e2a\u5339\u914d\u7ed3\u679c<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.gbase8.cn\/en\/9120\/#%E5%8F%82%E8%80%83\" >\u53c2\u8003<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E5%8F%82%E6%95%B0\"><\/span>\u53c2\u6570<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>-o, --only-matching       show only the part of a line matching PATTERN<\/code><\/pre>\n\n\n\n<p>-o\u53c2\u6570\u53ea\u8fd4\u56de\u5339\u914dPATTERN\u7684\u90e8\u5206<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>-P, --perl-regexp\n              Interpret PATTERN as a Perl regular expression.  This is highly experimental and grep -P  may  warn  of unimplemented features.<\/code><\/pre>\n\n\n\n<p>-P\u53c2\u6570\u4f7f\u7528perl\u6837\u5f0f\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\u3002<\/p>\n\n\n\n<p><span class=\"has-inline-color has-luminous-vivid-orange-color\">\u6ce8\u610f\uff1a\u67e5\u770bman\u6587\u6863\uff0cperl\u6b63\u5219\u90e8\u5206\u8fd8\u5904\u4e8e\u5b9e\u9a8c\u9636\u6bb5\uff0c\u6240\u4ee5... \u7528\u8fd8\u662f\u4e0d\u7528\u81ea\u5df1\u51b3\u5b9a\u3002<\/span><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E6%AD%A3%E5%88%99%E8%A1%A8%E8%BE%BE%E5%BC%8F_Pattern\"><\/span>\u6b63\u5219\u8868\u8fbe\u5f0f Pattern<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u96f6\u5bbd\uff0c\u8868\u793a\u5e76\u4e0d\u7b97\u5339\u914d\u7ed3\u679c\uff0c\u4f46\u53c2\u4e0e\u5339\u914d\u7684\u8fc7\u7a0b\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"i\"><\/span>(?&lt;=)  \u96f6\u5bbd\u5ea6\u6b63\u9884\u6d4b\u5148\u884c\u65ad\u8a00<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u5b83\u65ad\u8a00\u81ea\u8eab\u51fa\u73b0\u7684\u4f4d\u7f6e\u7684\u540e\u9762\u80fd\u5339\u914d\u8868\u8fbe\u5f0fexp<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"i-2\"><\/span>(?&lt;=exp)\u96f6\u5bbd\u5ea6\u6b63\u56de\u987e\u540e\u53d1\u65ad\u8a00<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u5b83\u65ad\u8a00\u81ea\u8eab\u51fa\u73b0\u7684\u4f4d\u7f6e\u7684\u524d\u9762\u80fd\u5339\u914d\u8868\u8fbe\u5f0fexp<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E5%8C%B9%E9%85%8D%E5%86%85%E5%AE%B9\"><\/span>(.+?)\u5339\u914d\u5185\u5bb9<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u53c2\u8003Perl\u6b63\u5219\u89c4\u5219\uff0c\u5176\u4e2d<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>\u70b9(.)\u8868\u793a\u4efb\u610f\u5b57\u7b26<\/li><li>+ \u8868\u793a\u6700\u5c111\u4e2a\u5b57\u7b26\uff0c\u4e0d\u5141\u8bb8\u7a7a<\/li><li>* \u8868\u793a\u4efb\u610f\u6570\u91cf\u5b57\u7b26\uff0c\u53ef\u4ee5\u4e3a\u7a7a<\/li><li>\uff1f\u8868\u793a\u5c3d\u91cf\u5c11\u7684\u5339\u914d\uff0c\u6bd4\u5982\u4e00\u884c\u53ef\u80fd\u6709\u591a\u6b21\u547d\u4e2d\uff0c\u5982\u679c\u4e0d\u52a0\uff0c\u4f1a\u9020\u6210\u7b2c\u4e00\u4e2a\u5148\u884c\u65ad\u8a00\u548c\u6700\u540e\u4e00\u4e2a\u540e\u884c\u65ad\u8a00\u4e4b\u95f4\u6574\u4f53\u8fd4\u56de\uff0c\u540e\u9762\u6709\u4f8b\u5b50<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E6%A0%B7%E4%BE%8B\"><\/span>\u6837\u4f8b<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u5982\u4e0b\u4ee5\u83b7\u5f97IP\u5730\u5740\u4e3a\u4f8b<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E9%BB%98%E8%AE%A4%E5%8C%B9%E9%85%8D%E8%BF%94%E5%9B%9E%E6%95%B4%E8%A1%8C\"><\/span>\u9ed8\u8ba4\u5339\u914d\u8fd4\u56de\u6574\u884c<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u65e0\u8bba\u662f-E\u8fd8\u662f-P \u90fd\u662f\u8fd4\u56de\u6574\u4e2a\u5339\u914d\u7684\u884c<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&#91;root@rh6-1 log]# echo \"121212&lt;IpAddress&gt;10.0.2.201&lt;\/IpAddress&gt;343456\"|grep -E '&lt;IpAddress&gt;.+?&lt;\/IpAddress&gt;'\n121212&lt;IpAddress&gt;10.0.2.201&lt;\/IpAddress&gt;343456\n&#91;root@rh6-1 log]# echo \"121212&lt;IpAddress&gt;10.0.2.201&lt;\/IpAddress&gt;343456\"|grep -P '&lt;IpAddress&gt;.+?&lt;\/IpAddress&gt;'\n121212&lt;IpAddress&gt;10.0.2.201&lt;\/IpAddress&gt;343456\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E4%B8%80%E8%A1%8C%E4%B8%80%E4%B8%AA%E5%8C%B9%E9%85%8D%E7%BB%93%E6%9E%9C\"><\/span>\u4e00\u884c\u4e00\u4e2a\u5339\u914d\u7ed3\u679c<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u6b64\u5904\u7684\u5339\u914dPattern\u4e3a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>'(?&lt;=&lt;IpAddress&gt;)(.+?)(?=&lt;\/IpAddress&gt;)<\/code><\/pre>\n\n\n\n<p>\u8868\u793a\u5339\u914d\u4f4d\u7f6e\u524d\u9762\u6709&lt;IpAddress&gt;\uff0c\u5339\u914d\u4f4d\u7f6e\u53f3\u9762\u6709&lt;\/IpAddress&gt;\uff0c \u8fd4\u56de\u7684\u662f\u5339\u914d\u5230\u768410.0.2.201\u7684IP<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&#91;root@rh6-1 log]# echo \"121212&lt;IpAddress&gt;10.0.2.201&lt;\/IpAddress&gt;343456\"|grep -oP '(?&lt;=&lt;IpAddress&gt;)(.+?)(?=&lt;\/IpAddress&gt;)'\n10.0.2.201\n&#91;root@rh6-1 log]# <\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E4%B8%80%E8%A1%8C%E5%A4%9A%E4%B8%AA%E5%8C%B9%E9%85%8D%E7%BB%93%E6%9E%9C\"><\/span>\u4e00\u884c\u591a\u4e2a\u5339\u914d\u7ed3\u679c<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u53ef\u4ee5\u770b\u5230\uff0c\u4e00\u884c\u6570\u636e\u5339\u914d\u5230\u4e862\u4e2a\u4f4d\u7f6e\uff0c\u7ed3\u679c\u96c6\u4e5f\u662f2\u884c\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&#91;root@rh6-1 log]# echo \"121212&lt;IpAddress&gt;10.0.2.201&lt;\/IpAddress&gt;342&lt;IpAddress&gt;10.0.2.202&lt;\/IpAddress&gt;3456\"|grep -oP '(?&lt;=&lt;IpAddress&gt;)(.+?)(?=&lt;\/IpAddress&gt;)'\n10.0.2.201\n10.0.2.202\n<\/code><\/pre>\n\n\n\n<p>\u5176\u4e2d\u7684\u5339\u914d\u4f4d\u7f6e\u5305\u62ec\u4e86? \u6700\u77ed\u5339\u914d\uff0c\u5982\u679c\u6ca1\u6709\uff0c\u8fd4\u56de\u7ed3\u679c\u5982\u4e0b<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&#91;root@rh6-1 log]# echo \"121212&lt;IpAddress&gt;10.0.2.201&lt;\/IpAddress&gt;342&lt;IpAddress&gt;10.0.2.202&lt;\/IpAddress&gt;3456\"|grep -oP '(?&lt;=&lt;IpAddress&gt;)(.+)(?=&lt;\/IpAddress&gt;)'\n10.0.2.201&lt;\/IpAddress&gt;342&lt;IpAddress&gt;10.0.2.202\n<\/code><\/pre>\n\n\n\n<p>\u8fd9\u4e2a\u5305\u542b\u4e862\u4e2aIP\u4ee5\u53ca\u4e4b\u95f4\u5176\u5b83\u5b57\u7b26\u7684\u7ed3\u679c\uff0c\u80af\u5b9a\u4e0d\u662f\u9884\u671f\u7684\u7ed3\u679c\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E5%8F%82%E8%80%83\"><\/span>\u53c2\u8003<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><a href=\"https:\/\/www.cnblogs.com\/gelare\/p\/12651418.html\">https:\/\/www.cnblogs.com\/gelare\/p\/12651418.html<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>linux\u4e0b\u7684grep\u53ef\u4ee5\u5bf9\u6587\u4ef6\u8fdb\u884c\u8fc7\u6ee4\uff0c\u5e76\u8fd4\u56de\u5339\u914d\u5230\u7684\u884c\uff0c\u4f46\u6709\u65f6\u6211\u4eec\u53ea\u9700\u8981\u5339\u914d\u884c\u4e2d\u7684\u90e8\u5206\u5185\u5bb9\uff0c\u800c\u4e0d\u662f\u6574\u884c\uff0c\u4e00\u822c\u90fd\u662f\u7528awk\u7b49\u5bf9\u5339\u914d\u884c\u8fdb\u884c\u4e8c\u6b21\u5207\u5206\u7b49\u3002\u672c\u6587\u4ecb\u7ecd\u4e00\u79cd\u7528grep\u6b63\u5219\u5339\u914d\u6a21\u5f0f\u53ea\u8fd4\u56de\u6240\u9700\u90e8\u5206\u7684\u5185\u5bb9\uff0c\u5305\u62ec\u4e00\u884c\u6570\u636e\u91cc\u5339\u914d\u5230\u591a\u4e2a\u7ed3\u679c\u3002<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[72],"class_list":["post-9120","post","type-post","status-publish","format-standard","hentry","category-1","tag-linux"],"_links":{"self":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts\/9120","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/comments?post=9120"}],"version-history":[{"count":14,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts\/9120\/revisions"}],"predecessor-version":[{"id":9134,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts\/9120\/revisions\/9134"}],"wp:attachment":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/media?parent=9120"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/categories?post=9120"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/tags?post=9120"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}