{"id":2839,"date":"2012-03-30T09:20:02","date_gmt":"2012-03-30T01:20:02","guid":{"rendered":"http:\/\/jpuyy.com\/?p=2839"},"modified":"2012-11-25T14:44:31","modified_gmt":"2012-11-25T06:44:31","slug":"linux-print-file-last-line","status":"publish","type":"post","link":"https:\/\/jpuyy.com\/?p=2839","title":{"rendered":"linux\u663e\u793a\u6700\u540e\u4e00\u884c\u7684\u51e0\u79cd\u65b9\u6cd5"},"content":{"rendered":"<pre>1. tail -n 1 filename\r\n2. tail -1 filename\r\n3. sed -n '$p' filename\r\n4. awk 'END {print}' filename<\/pre>\n<p>\u5982\u679c\u60f3\u663e\u793a\u6587\u672c\u7684\u67d0\u4e00\u884c\uff0c\u6bd4\u5982\u8bf4\u7b2c\u4e94\u884c\uff1a<\/p>\n<pre>awk '{ if(NR==5)print}' filename<\/pre>\n<p>\u5728shell\u4e2d\u7528\u53d8\u91cfLineNo\u4ee3\u66ff\u884c\u53f7\uff0c\u6ce8\u610f\u5355\u53cc\u5f15\u53f7<\/p>\n<pre>awk \"{ if(NR==$LineNo)print}\" filename<\/pre>\n<p>5.\u5982\u679c\u8981\u52a8\u6001\u7684\u663e\u793a\u6700\u540e\u4e00\u884c<\/p>\n<pre> tailf -1 filename<\/pre>\n<p>\u6216\u51e0\u884c<\/p>\n<pre> tail -f filename<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>1. tail -n 1 filename 2. tail -1 filename 3. sed -n &#8216;$p&#8217; filename 4. awk &#8216;END {print}&#8217; filename \u5982\u679c\u60f3\u663e\u793a\u6587\u672c\u7684\u67d0\u4e00\u884c\uff0c\u6bd4\u5982\u8bf4\u7b2c\u4e94\u884c\uff1a awk &#8216;{ if(NR==5)print}&#8217; filename \u5728shell\u4e2d\u7528\u53d8\u91cfLineNo\u4ee3\u66ff\u884c\u53f7\uff0c\u6ce8\u610f\u5355\u53cc\u5f15\u53f7 awk &#8220;{ if(NR==$LineNo)print}&#8221; filename 5.\u5982\u679c\u8981\u52a8\u6001\u7684\u663e\u793a\u6700\u540e\u4e00\u884c tailf -1 filename \u6216\u51e0\u884c tail -f filename<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-2839","post","type-post","status-publish","format-standard","hentry","category-linux"],"_links":{"self":[{"href":"https:\/\/jpuyy.com\/index.php?rest_route=\/wp\/v2\/posts\/2839","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jpuyy.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jpuyy.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jpuyy.com\/index.php?rest_route=\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/jpuyy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2839"}],"version-history":[{"count":5,"href":"https:\/\/jpuyy.com\/index.php?rest_route=\/wp\/v2\/posts\/2839\/revisions"}],"predecessor-version":[{"id":4283,"href":"https:\/\/jpuyy.com\/index.php?rest_route=\/wp\/v2\/posts\/2839\/revisions\/4283"}],"wp:attachment":[{"href":"https:\/\/jpuyy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2839"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jpuyy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2839"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jpuyy.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2839"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}