{"id":201,"date":"2025-04-07T20:14:37","date_gmt":"2025-04-07T12:14:37","guid":{"rendered":"https:\/\/blog.nimail.cn\/?p=201"},"modified":"2025-04-07T20:14:38","modified_gmt":"2025-04-07T12:14:38","slug":"linux%e7%9a%84truncate-%e8%af%a6%e8%a7%a3%ef%bc%8c%e6%b8%85%e9%99%a4%e6%96%87%e4%bb%b6%e7%a5%9e%e5%a5%87","status":"publish","type":"post","link":"https:\/\/blog.nimail.cn\/best-articles\/linux%e7%9a%84truncate-%e8%af%a6%e8%a7%a3%ef%bc%8c%e6%b8%85%e9%99%a4%e6%96%87%e4%bb%b6%e7%a5%9e%e5%a5%87\/","title":{"rendered":"linux\u7684truncate \u8be6\u89e3\uff0c\u6e05\u9664\u6587\u4ef6\u795e\u5947"},"content":{"rendered":"\n<p><code>truncate<\/code> \u662f\u4e00\u4e2a\u7528\u6765\u8c03\u6574\u6587\u4ef6\u5927\u5c0f\u7684\u547d\u4ee4\uff0c\u80fd\u591f<strong>\u622a\u65ad<\/strong>\u6216<strong>\u6269\u5c55<\/strong>\u6587\u4ef6\u3002\u5b83\u5e38\u7528\u4e8e\u6e05\u7406\u65e5\u5fd7\u6587\u4ef6\u3001\u88c1\u526a\u4e0d\u518d\u9700\u8981\u7684\u5185\u5bb9\u6216\u8005\u5c06\u6587\u4ef6\u5927\u5c0f\u8c03\u6574\u4e3a\u7279\u5b9a\u503c\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udccc \u57fa\u672c\u8bed\u6cd5\uff1a<\/h2>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>truncate [\u9009\u9879] &lt;\u6587\u4ef6\u540d><\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e3b\u8981\u9009\u9879\uff1a<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u9009\u9879<\/th><th>\u63cf\u8ff0<\/th><\/tr><\/thead><tbody><tr><td><code>-s<\/code><\/td><td>\u8bbe\u7f6e\u6587\u4ef6\u7684\u5927\u5c0f\uff08\u4ee5\u5b57\u8282\u4e3a\u5355\u4f4d\uff09\uff0c\u5982\u679c\u6587\u4ef6\u5927\u4e8e\u6307\u5b9a\u5927\u5c0f\uff0c\u5219\u4f1a\u622a\u65ad\uff1b\u5982\u679c\u6587\u4ef6\u5c0f\u4e8e\u6307\u5b9a\u5927\u5c0f\uff0c\u5219\u4f1a\u7528\u96f6\u586b\u5145\u3002<\/td><\/tr><tr><td><code>-c<\/code><\/td><td><strong>\u53ea\u66f4\u6539\u6587\u4ef6\u5927\u5c0f<\/strong>\uff0c\u5982\u679c\u6587\u4ef6\u5df2\u7ecf\u662f\u76ee\u6807\u5927\u5c0f\uff0c\u4ec0\u4e48\u4e5f\u4e0d\u505a\u3002<\/td><\/tr><tr><td><code>--size<\/code><\/td><td>\u7b49\u540c\u4e8e <code>-s<\/code>\uff0c\u6307\u5b9a\u6587\u4ef6\u7684\u76ee\u6807\u5927\u5c0f\u3002<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udcc2 \u5e38\u7528\u7528\u6cd5\uff1a<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1. <strong>\u622a\u65ad\u6587\u4ef6\u5185\u5bb9<\/strong><\/h3>\n\n\n\n<p>\u5982\u679c\u4f60\u5e0c\u671b\u5c06\u4e00\u4e2a\u6587\u4ef6<strong>\u622a\u65ad\u4e3a 0 \u5b57\u8282<\/strong>\uff08\u4f8b\u5982\u6e05\u7a7a\u65e5\u5fd7\u6587\u4ef6\uff09\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>truncate -s 0 \/path\/to\/logfile.log<\/code><\/pre>\n\n\n\n<p>\u8fd9\u4e2a\u547d\u4ee4\u4f1a\u628a <code>logfile.log<\/code> \u7684\u5185\u5bb9\u6e05\u7a7a\uff0c\u4f46\u4fdd\u7559\u6587\u4ef6\u672c\u8eab\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. <strong>\u8bbe\u7f6e\u6587\u4ef6\u5927\u5c0f<\/strong><\/h3>\n\n\n\n<p>\u5982\u679c\u4f60\u5e0c\u671b\u5c06\u6587\u4ef6\u8c03\u6574\u4e3a\u7279\u5b9a\u5927\u5c0f\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>-s<\/code> \u53c2\u6570\u3002\u4f8b\u5982\uff0c\u8981\u5c06\u6587\u4ef6\u5927\u5c0f\u8bbe\u7f6e\u4e3a 10MB\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>truncate -s 10M \/path\/to\/file<\/code><\/pre>\n\n\n\n<p>\u8fd9\u4f1a\u5c06\u6587\u4ef6\u6269\u5c55\u6216\u622a\u65ad\u81f3 10MB\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5982\u679c\u6587\u4ef6\u5927\u4e8e 10MB\uff0c\u5219\u4f1a\u622a\u65ad\u3002<\/li>\n\n\n\n<li>\u5982\u679c\u6587\u4ef6\u5c0f\u4e8e 10MB\uff0c\u5219\u4f1a\u7528\u96f6\u586b\u5145\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">3. <strong>\u6269\u5c55\u6587\u4ef6\uff08\u96f6\u586b\u5145\uff09<\/strong><\/h3>\n\n\n\n<p>\u5982\u679c\u6587\u4ef6\u5c0f\u4e8e\u76ee\u6807\u5927\u5c0f\uff0c<code>truncate<\/code> \u4f1a\u4f7f\u7528\u96f6\u586b\u5145\u3002\u4f8b\u5982\uff0c\u5c06\u6587\u4ef6\u6269\u5c55\u4e3a 1GB\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>truncate -s 1G \/path\/to\/file<\/code><\/pre>\n\n\n\n<p>\u5982\u679c <code>file<\/code> \u6587\u4ef6\u5c0f\u4e8e 1GB\uff0c\u5b83\u4f1a\u88ab\u586b\u5145\u4e3a 1GB\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4. <strong>\u6269\u5c55\u4e3a\u8d1f\u5927\u5c0f\uff08\u5220\u9664\u5185\u5bb9\uff09<\/strong><\/h3>\n\n\n\n<p>\u4f60\u8fd8\u53ef\u4ee5\u901a\u8fc7\u6307\u5b9a\u8d1f\u503c\u6765\u4ece\u6587\u4ef6\u7684\u672b\u5c3e\u5220\u9664\u6307\u5b9a\u5b57\u8282\u6570\u3002\u4f8b\u5982\uff0c\u8981\u5220\u9664\u6587\u4ef6\u7684\u6700\u540e 100 \u5b57\u8282\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>truncate -s -100 \/path\/to\/file<\/code><\/pre>\n\n\n\n<p>\u8fd9\u4e2a\u547d\u4ee4\u4f1a\u5c06\u6587\u4ef6\u4ece\u5c3e\u90e8\u622a\u65ad\uff0c\u53bb\u6389\u6700\u540e\u7684 100 \u5b57\u8282\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udca1 \u5b9e\u9645\u5e94\u7528\u573a\u666f\uff1a<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1. <strong>\u6e05\u7a7a\u65e5\u5fd7\u6587\u4ef6<\/strong><\/h3>\n\n\n\n<p>\u6709\u65f6\u5019 Docker \u6216\u5e94\u7528\u7684\u65e5\u5fd7\u6587\u4ef6\u4f1a\u975e\u5e38\u5927\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528 <code>truncate<\/code> \u6765\u6e05\u7a7a\u65e5\u5fd7\u6587\u4ef6\uff0c\u800c\u4e0d\u5220\u9664\u6587\u4ef6\u672c\u8eab\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>truncate -s 0 \/var\/lib\/docker\/containers\/&lt;container-id>\/&lt;container-id>-json.log<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">2. <strong>\u7ba1\u7406\u78c1\u76d8\u7a7a\u95f4<\/strong><\/h3>\n\n\n\n<p>\u5f53\u78c1\u76d8\u7a7a\u95f4\u4e0d\u591f\u65f6\uff0c\u4f60\u53ef\u80fd\u4f1a\u4f7f\u7528 <code>truncate<\/code> \u6765\u51cf\u5c11\u5927\u6587\u4ef6\u7684\u5927\u5c0f\uff0c\u4f8b\u5982\u6e05\u7406\u5927\u6587\u4ef6\u4f46\u4fdd\u7559\u5176\u7ed3\u6784\uff08\u5982\u6570\u636e\u5e93\u6587\u4ef6\u3001\u865a\u62df\u673a\u78c1\u76d8\u7b49\uff09\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3. <strong>\u5feb\u901f\u6d4b\u8bd5\u6587\u4ef6\u5927\u5c0f<\/strong><\/h3>\n\n\n\n<p><code>truncate<\/code> \u4e5f\u53ef\u4ee5\u7528\u4e8e\u5feb\u901f\u521b\u5efa\u4e00\u4e2a\u7279\u5b9a\u5927\u5c0f\u7684\u6587\u4ef6\uff0c\u7528\u4e8e\u6d4b\u8bd5\u6216\u586b\u5145\u78c1\u76d8\u7a7a\u95f4\u3002\u4f8b\u5982\uff0c\u521b\u5efa\u4e00\u4e2a 100MB \u7684\u6587\u4ef6\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>truncate -s 100M testfile<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83e\udde0 \u603b\u7ed3<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong><code>truncate -s 0 &lt;file><\/code><\/strong>\uff1a\u6e05\u7a7a\u6587\u4ef6\u5185\u5bb9\u4f46\u4fdd\u7559\u6587\u4ef6\u3002<\/li>\n\n\n\n<li><strong><code>truncate -s &lt;size> &lt;file><\/code><\/strong>\uff1a\u8c03\u6574\u6587\u4ef6\u4e3a\u6307\u5b9a\u5927\u5c0f\uff0c\u53ef\u4ee5\u662f\u6b63\u6570\uff08\u622a\u65ad\uff09\u6216\u8d1f\u6570\uff08\u5220\u9664\u672b\u5c3e\u5185\u5bb9\uff09\u3002<\/li>\n\n\n\n<li><strong><code>truncate -s &lt;size> &lt;file><\/code><\/strong>\uff1a\u5982\u679c\u6587\u4ef6\u5c0f\u4e8e\u6307\u5b9a\u5927\u5c0f\uff0c\u6587\u4ef6\u4f1a\u7528\u96f6\u586b\u5145\u3002<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>truncate \u662f\u4e00\u4e2a\u7528\u6765\u8c03\u6574\u6587\u4ef6\u5927\u5c0f\u7684\u547d\u4ee4\uff0c\u80fd\u591f\u622a\u65ad\u6216\u6269\u5c55\u6587\u4ef6\u3002\u5b83\u5e38\u7528\u4e8e\u6e05\u7406\u65e5\u5fd7\u6587\u4ef6\u3001\u88c1\u526a\u4e0d\u518d\u9700\u8981\u7684\u5185\u5bb9\u6216\u8005\u5c06\u6587\u4ef6\u5927\u5c0f\u8c03\u6574\u4e3a\u7279\u5b9a\u503c\u3002 \ud83d\udccc \u57fa\u672c\u8bed\u6cd5\uff1a truncate [\u9009\u9879] &lt;\u6587\u4ef6\u540d> \u4e3b\u8981\u9009\u9879\uff1a \u9009\u9879 \u63cf\u8ff0 -s \u8bbe\u7f6e\u6587\u4ef6\u7684\u5927\u5c0f\uff08\u4ee5\u5b57\u8282\u4e3a\u5355\u4f4d\uff09\uff0c\u5982\u679c\u6587\u4ef6\u5927\u4e8e\u6307\u5b9a\u5927\u5c0f\uff0c\u5219\u4f1a\u622a\u65ad\uff1b\u5982\u679c\u6587\u4ef6\u5c0f\u4e8e\u6307\u5b9a\u5927\u5c0f\uff0c\u5219\u4f1a\u7528\u96f6\u586b\u5145\u3002 -c \u53ea\u66f4\u6539\u6587\u4ef6\u5927\u5c0f\uff0c\u5982\u679c\u6587\u4ef6\u5df2\u7ecf\u662f\u76ee\u6807\u5927\u5c0f\uff0c\u4ec0\u4e48\u4e5f\u4e0d\u505a\u3002 &#8211;si&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[14,15],"class_list":["post-201","post","type-post","status-publish","format-standard","hentry","category-best-articles","tag-linux","tag-truncate"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.3.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>linux\u7684truncate \u8be6\u89e3\uff0c\u6e05\u9664\u6587\u4ef6\u795e\u5947 - nimail blog<\/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:\/\/blog.nimail.cn\/best-articles\/linux\u7684truncate-\u8be6\u89e3\uff0c\u6e05\u9664\u6587\u4ef6\u795e\u5947\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"linux\u7684truncate \u8be6\u89e3\uff0c\u6e05\u9664\u6587\u4ef6\u795e\u5947 - nimail blog\" \/>\n<meta property=\"og:description\" content=\"truncate \u662f\u4e00\u4e2a\u7528\u6765\u8c03\u6574\u6587\u4ef6\u5927\u5c0f\u7684\u547d\u4ee4\uff0c\u80fd\u591f\u622a\u65ad\u6216\u6269\u5c55\u6587\u4ef6\u3002\u5b83\u5e38\u7528\u4e8e\u6e05\u7406\u65e5\u5fd7\u6587\u4ef6\u3001\u88c1\u526a\u4e0d\u518d\u9700\u8981\u7684\u5185\u5bb9\u6216\u8005\u5c06\u6587\u4ef6\u5927\u5c0f\u8c03\u6574\u4e3a\u7279\u5b9a\u503c\u3002 \ud83d\udccc \u57fa\u672c\u8bed\u6cd5\uff1a truncate [\u9009\u9879] &lt;\u6587\u4ef6\u540d&gt; \u4e3b\u8981\u9009\u9879\uff1a \u9009\u9879 \u63cf\u8ff0 -s \u8bbe\u7f6e\u6587\u4ef6\u7684\u5927\u5c0f\uff08\u4ee5\u5b57\u8282\u4e3a\u5355\u4f4d\uff09\uff0c\u5982\u679c\u6587\u4ef6\u5927\u4e8e\u6307\u5b9a\u5927\u5c0f\uff0c\u5219\u4f1a\u622a\u65ad\uff1b\u5982\u679c\u6587\u4ef6\u5c0f\u4e8e\u6307\u5b9a\u5927\u5c0f\uff0c\u5219\u4f1a\u7528\u96f6\u586b\u5145\u3002 -c \u53ea\u66f4\u6539\u6587\u4ef6\u5927\u5c0f\uff0c\u5982\u679c\u6587\u4ef6\u5df2\u7ecf\u662f\u76ee\u6807\u5927\u5c0f\uff0c\u4ec0\u4e48\u4e5f\u4e0d\u505a\u3002 --si...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/blog.nimail.cn\/best-articles\/linux\u7684truncate-\u8be6\u89e3\uff0c\u6e05\u9664\u6587\u4ef6\u795e\u5947\/\" \/>\n<meta property=\"og:site_name\" content=\"nimail blog\" \/>\n<meta property=\"article:published_time\" content=\"2025-04-07T12:14:37+00:00\" \/>\n<meta property=\"article:modified_time\" 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