{"id":862,"date":"2017-04-13T02:28:22","date_gmt":"2017-04-13T02:28:22","guid":{"rendered":"https:\/\/peloo.net\/?p=862"},"modified":"2017-04-13T02:28:22","modified_gmt":"2017-04-13T02:28:22","slug":"awk%e5%8c%b9%e9%85%8d%e5%a4%a7%e5%b0%8f%e5%86%99","status":"publish","type":"post","link":"https:\/\/peloo.net\/?p=862","title":{"rendered":"AWK\u5339\u914d\u5927\u5c0f\u5199"},"content":{"rendered":"<p>\n\t\u5728\u7528AWK\u5339\u914d\u5b57\u7b26\u4e32\u65f6\u5019\uff0c \u6570\u5b57\u8fd8\u597d\uff0c\u5982\u679c\u662f\u5b57\u6bcd\u5c31\u9700\u8981\u8003\u8651\u5927\u5c0f\u5199\uff0c\u9664\u975e\u4f60\u6e05\u6670\u7684\u8bb0\u5f97\u4f60\u8981\u641c\u7d22\u7684\u5b57\u7b26\u4e32\u3002\n<\/p>\n<p>\n\t\u5e9f\u8bdd\u4e0d\u591a\u8bf4\uff0c\u4f8b\u5b50\u8bf4\u8bdd\u3002\n<\/p>\n<p>\n\t\u6709\u4e2a\u6587\u4ef6\u540d\u4e3afile.txt\uff0c\u5185\u5bb9\u5982\u4e0b\uff0c\n<\/p>\n<p>\n\t376471 376471 java.lang.NullPointerException: null<br \/>\n\t376584 376584 java.lang.NullPointerException: null<br \/>\n\t376624 376624 java.lang.NullPointerException: null<br \/>\n\t376767 376767 java.lang.NullPointerException: null<br \/>\n\t376807 376807 java.lang.NullPointerException: null<br \/>\n\t376937 376937 java.lang.NullPointerException: null<br \/>\n\t376977 376977 java.lang.NullPointerException: null\n<\/p>\n<p>\n\t&nbsp;\n<\/p>\n<p>\n\t\u95ee\uff1a \u5982\u4f55\u7528AWK\u5339\u914dNullPointerException\u5b57\u7b26\u4e32\uff0c\u5728\u4f60\u4e0d\u77e5\u9053\u8fd9\u4e2a\u5b57\u7b26\u4e32\u91cc\u54ea\u4e2a\u662f\u5927\u5c0f\u5199\u7684\u60c5\u51b5\u4e0b\uff1f\n<\/p>\n<p>\n\t&nbsp;\n<\/p>\n<p>\n\t\u7b54\uff1aAWK\u91cc\u6709\u5185\u5efa\u51fd\u6570tolower()\u548ctoupper()\uff0c\u53ef\u4ee5\u5c06\u57df\u5b57\u6bb5\u8f6c\u6362\u4e3a\u5c0f\u5199\u6216\u5927\u5199\n<\/p>\n<p>\n\t[pc@centos603 ~]$ awk &#039;<strong><span style=\"color:#FF0000\">tolower<\/span><\/strong>($0) ~ \/nullpoint\/ { print NR,FNR,$0 }&#039; file.txt<br \/>\n\t1 1 376392 376392 java.lang.NullPointerException: null<br \/>\n\t2 2 376471 376471 java.lang.NullPointerException: null<br \/>\n\t3 3 376584 376584 java.lang.NullPointerException: null<br \/>\n\t4 4 376624 376624 java.lang.NullPointerException: null<br \/>\n\t5 5 376767 376767 java.lang.NullPointerException: null<br \/>\n\t6 6 376807 376807 java.lang.NullPointerException: null<br \/>\n\t7 7 376937 376937 java.lang.NullPointerException: null<br \/>\n\t8 8 376977 376977 java.lang.NullPointerException: null\n<\/p>\n<p>\n\t&nbsp;\n<\/p>\n<p>\n\t&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728\u7528AWK\u5339\u914d\u5b57\u7b26\u4e32\u65f6\u5019\uff0c \u6570\u5b57\u8fd8\u597d\uff0c\u5982\u679c\u662f\u5b57\u6bcd\u5c31\u9700\u8981\u8003\u8651\u5927\u5c0f\u5199\uff0c\u9664\u975e\u4f60\u6e05\u6670\u7684\u8bb0\u5f97\u4f60\u8981\u641c\u7d22\u7684\u5b57\u7b26\u4e32\u3002 \u5e9f\u8bdd\u4e0d\u591a\u8bf4\uff0c\u4f8b\u5b50\u8bf4\u8bdd\u3002 \u6709\u4e2a\u6587\u4ef6\u540d\u4e3afile.txt\uff0c\u5185\u5bb9\u5982\u4e0b\uff0c 376471 376471 java.lang.NullPointerException: null 376584 376584 java.lang.NullPointerException: null 376624 376624 java.lang.NullPointerException: null 376767 376767 java.lang.NullPointerException: null 376807 376807 java.lang.NullPointerException: null 376937 376937 java.lang.NullPointerException: null 376977 376977 java.lang.NullPointerException: null &nbsp; \u95ee\uff1a \u5982\u4f55\u7528AWK\u5339\u914dNullPointerException\u5b57\u7b26\u4e32\uff0c\u5728\u4f60\u4e0d\u77e5\u9053\u8fd9\u4e2a\u5b57\u7b26\u4e32\u91cc\u54ea\u4e2a\u662f\u5927\u5c0f\u5199\u7684\u60c5\u51b5\u4e0b\uff1f &nbsp; \u7b54\uff1aAWK\u91cc\u6709\u5185\u5efa\u51fd\u6570tolower()\u548ctoupper()\uff0c\u53ef\u4ee5\u5c06\u57df\u5b57\u6bb5\u8f6c\u6362\u4e3a\u5c0f\u5199\u6216\u5927\u5199 [pc@centos603 ~]$ awk &#039;tolower($0) ~ \/nullpoint\/ { print NR,FNR,$0 }&#039; file.txt 1 1 376392 376392 java.lang.NullPointerException: null 2&#8230;<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-862","post","type-post","status-publish","format-standard","hentry","category-linux-shell"],"aioseo_notices":[],"brizy_media":[],"_links":{"self":[{"href":"https:\/\/peloo.net\/index.php?rest_route=\/wp\/v2\/posts\/862","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/peloo.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/peloo.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/peloo.net\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/peloo.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=862"}],"version-history":[{"count":1,"href":"https:\/\/peloo.net\/index.php?rest_route=\/wp\/v2\/posts\/862\/revisions"}],"predecessor-version":[{"id":863,"href":"https:\/\/peloo.net\/index.php?rest_route=\/wp\/v2\/posts\/862\/revisions\/863"}],"wp:attachment":[{"href":"https:\/\/peloo.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=862"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/peloo.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=862"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/peloo.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=862"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}