{"id":15332,"date":"2023-03-19T14:02:45","date_gmt":"2023-03-19T06:02:45","guid":{"rendered":"https:\/\/ailog.tw\/lifelog\/?p=15332"},"modified":"2023-03-19T14:02:57","modified_gmt":"2023-03-19T06:02:57","slug":"linux-head-tail-cat","status":"publish","type":"post","link":"https:\/\/ailog.tw\/lifelog\/2023\/03\/19\/linux-head-tail-cat\/","title":{"rendered":"Linux\u900f\u904e\u300chead\u300d\u3001\u300ctail\u300d\u986f\u793a\u6a94\u6848\u6307\u5b9a\u884c\u6578\u5167\u5bb9"},"content":{"rendered":"<p><span style=\"font-size: 14pt; font-family: verdana, geneva;\">\u5728Linux\u4e2d\u6709\u6642\u6703\u9700\u8981\u986f\u793a\u6a94\u6848\u7684\u7279\u5b9a\u884c\u6578\u5167\u5bb9\uff0c\u5c0f\u7de8\u4eca\u5929\u8981\u4f86\u4ecb\u7d39\u5982\u4f55\u900f\u904e\u300chead\u300d\u3001\u300ctail\u300d\u7b49\u6307\u4ee4\u9032\u884c\u3002<\/span><\/p>\n<p><span style=\"font-size: 14pt; font-family: verdana, geneva;\"><!--more--><\/span><\/p>\n<p><span style=\"font-size: 14pt; font-family: verdana, geneva;\">\u672c\u7bc4\u4f8b\u4f7f\u7528\u7684\u300c\/tmp\/testfile.sh\u300d\u6a94\u6848\u5167\u5bb9\u5982\u4e0b\uff1a<\/span><br \/>\n<span style=\"font-size: 14pt; font-family: verdana, geneva;\">&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-<\/span><br \/>\n<span style=\"font-size: 14pt; font-family: verdana, geneva;\">1<\/span><br \/>\n<span style=\"font-size: 14pt; font-family: verdana, geneva;\">22<\/span><br \/>\n<span style=\"font-size: 14pt; font-family: verdana, geneva;\">333<\/span><br \/>\n<span style=\"font-size: 14pt; font-family: verdana, geneva;\">4444<\/span><br \/>\n<span style=\"font-size: 14pt; font-family: verdana, geneva;\">55555<\/span><br \/>\n<span style=\"font-size: 14pt; font-family: verdana, geneva;\">666666<\/span><br \/>\n<span style=\"font-size: 14pt; font-family: verdana, geneva;\">7777777<\/span><br \/>\n<span style=\"font-size: 14pt; font-family: verdana, geneva;\">88888888<\/span><br \/>\n<span style=\"font-size: 14pt; font-family: verdana, geneva;\">999999999<\/span><br \/>\n<span style=\"font-size: 14pt; font-family: verdana, geneva;\">0000000000<\/span><br \/>\n<span style=\"font-size: 14pt; font-family: verdana, geneva;\">&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-<\/span><\/p>\n<p><span style=\"font-size: 14pt; font-family: verdana, geneva;\">\u7bc4\u4f8b1\uff1a\u986f\u793a\u6a94\u6848\u524d5\u884c\u5167\u5bb9<\/span><br \/>\n<span style=\"font-size: 14pt; font-family: verdana, geneva;\"><span style=\"color: #ff0000;\">head<\/span> -n 5 \/tmp\/testfile.sh<\/span><br \/>\n<span style=\"font-size: 14pt; font-family: verdana, geneva;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-15337 size-full\" src=\"https:\/\/ailog.tw\/lifelog\/wp-content\/uploads\/2023\/03\/linux-head-tail-cat-01.png\" alt=\"\" width=\"623\" height=\"245\" srcset=\"https:\/\/ailog.tw\/lifelog\/wp-content\/uploads\/2023\/03\/linux-head-tail-cat-01.png 623w, https:\/\/ailog.tw\/lifelog\/wp-content\/uploads\/2023\/03\/linux-head-tail-cat-01-300x118.png 300w\" sizes=\"auto, (max-width: 623px) 100vw, 623px\" \/><\/span><\/p>\n<p><span style=\"font-family: verdana, geneva; font-size: 14pt;\">\u7bc4\u4f8b2\uff1a\u986f\u793a\u6a94\u6848\u5f8c5\u884c\u5167\u5bb9<br \/>\n<span style=\"color: #ff0000;\">tail<\/span> -n 5 \/tmp\/testfile.sh<\/span><br \/>\n<span style=\"font-family: verdana, geneva; font-size: 14pt;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-15338 size-full\" src=\"https:\/\/ailog.tw\/lifelog\/wp-content\/uploads\/2023\/03\/linux-head-tail-cat-02.png\" alt=\"\" width=\"625\" height=\"248\" srcset=\"https:\/\/ailog.tw\/lifelog\/wp-content\/uploads\/2023\/03\/linux-head-tail-cat-02.png 625w, https:\/\/ailog.tw\/lifelog\/wp-content\/uploads\/2023\/03\/linux-head-tail-cat-02-300x119.png 300w\" sizes=\"auto, (max-width: 625px) 100vw, 625px\" \/><\/span><\/p>\n<p><span style=\"font-family: verdana, geneva; font-size: 14pt;\">\u7bc4\u4f8b3\uff1a\u986f\u793a\u6a94\u6848\u5f8c6~8\u884c\u5167\u5bb9<\/span><br \/>\n<span style=\"font-family: verdana, geneva; font-size: 14pt;\"><span style=\"color: #ff0000;\">head<\/span> -n 8 \/tmp\/testfile.sh | <span style=\"color: #ff0000;\">tail<\/span> -n 3<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-15339 size-full\" src=\"https:\/\/ailog.tw\/lifelog\/wp-content\/uploads\/2023\/03\/linux-head-tail-cat-03.png\" alt=\"\" width=\"809\" height=\"174\" srcset=\"https:\/\/ailog.tw\/lifelog\/wp-content\/uploads\/2023\/03\/linux-head-tail-cat-03.png 809w, https:\/\/ailog.tw\/lifelog\/wp-content\/uploads\/2023\/03\/linux-head-tail-cat-03-300x65.png 300w, https:\/\/ailog.tw\/lifelog\/wp-content\/uploads\/2023\/03\/linux-head-tail-cat-03-768x165.png 768w\" sizes=\"auto, (max-width: 767px) 89vw, (max-width: 1000px) 54vw, (max-width: 1071px) 543px, 580px\" \/><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728Linux\u4e2d\u6709\u6642\u6703\u9700\u8981\u986f\u793a\u6a94\u6848\u7684\u7279\u5b9a\u884c\u6578\u5167\u5bb9\uff0c\u5c0f\u7de8\u4eca\u5929\u8981\u4f86\u4ecb\u7d39\u5982\u4f55\u900f\u904e\u300chead\u300d\u3001\u300ctail\u300d\u7b49\u6307\u4ee4\u9032\u884c\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4,379],"tags":[5994,121,5995],"class_list":["post-15332","post","type-post","status-publish","format-standard","hentry","category-itinfo","category-linux","tag-head","tag-linux","tag-tail"],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/ailog.tw\/lifelog\/wp-json\/wp\/v2\/posts\/15332","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ailog.tw\/lifelog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ailog.tw\/lifelog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ailog.tw\/lifelog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ailog.tw\/lifelog\/wp-json\/wp\/v2\/comments?post=15332"}],"version-history":[{"count":5,"href":"https:\/\/ailog.tw\/lifelog\/wp-json\/wp\/v2\/posts\/15332\/revisions"}],"predecessor-version":[{"id":15340,"href":"https:\/\/ailog.tw\/lifelog\/wp-json\/wp\/v2\/posts\/15332\/revisions\/15340"}],"wp:attachment":[{"href":"https:\/\/ailog.tw\/lifelog\/wp-json\/wp\/v2\/media?parent=15332"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ailog.tw\/lifelog\/wp-json\/wp\/v2\/categories?post=15332"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ailog.tw\/lifelog\/wp-json\/wp\/v2\/tags?post=15332"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}