{"id":43442,"date":"2024-10-05T17:16:24","date_gmt":"2024-10-05T09:16:24","guid":{"rendered":"https:\/\/server.hk\/cnblog\/43442\/"},"modified":"2024-10-05T17:16:24","modified_gmt":"2024-10-05T09:16:24","slug":"centos-flock-%e9%98%b2%e6%ad%a2%e8%85%b3%e6%9c%ac%e9%87%8d%e8%a4%87%e9%81%8b%e8%a1%8c","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/43442\/","title":{"rendered":"CentOS flock \u9632\u6b62\u8173\u672c\u91cd\u8907\u904b\u884c"},"content":{"rendered":"<h1 id=\"centos-flock-%e9%98%b2%e6%ad%a2%e8%85%b3%e6%9c%ac%e9%87%8d%e8%a4%87%e9%81%8b%e8%a1%8c-fJdviWJzqp\">CentOS Flock \u9632\u6b62\u8173\u672c\u91cd\u8907\u904b\u884c<\/h1>\n<p>\u5728\u4f3a\u670d\u5668\u7ba1\u7406\u4e2d\uff0c\u9632\u6b62\u8173\u672c\u91cd\u8907\u904b\u884c\u662f\u4e00\u500b\u91cd\u8981\u7684\u8ab2\u984c\u3002\u7279\u5225\u662f\u5728\u4f7f\u7528 CentOS \u7cfb\u7d71\u6642\uff0c\u5982\u4f55\u6709\u6548\u5730\u7ba1\u7406\u548c\u63a7\u5236\u8173\u672c\u7684\u57f7\u884c\uff0c\u80fd\u5920\u907f\u514d\u8cc7\u6e90\u6d6a\u8cbb\u548c\u6f5b\u5728\u7684\u932f\u8aa4\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728 CentOS \u74b0\u5883\u4e2d\u4f7f\u7528 flock \u5de5\u5177\u4f86\u9632\u6b62\u8173\u672c\u7684\u91cd\u8907\u904b\u884c\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af-flock%ef%bc%9f-fJdviWJzqp\">\u4ec0\u9ebc\u662f Flock\uff1f<\/h2>\n<p>Flock \u662f\u4e00\u500b\u7528\u65bc\u7ba1\u7406\u6587\u4ef6\u9396\u7684\u547d\u4ee4\u884c\u5de5\u5177\u3002\u5b83\u53ef\u4ee5\u5e6b\u52a9\u7528\u6236\u5728\u57f7\u884c\u8173\u672c\u6642\uff0c\u78ba\u4fdd\u540c\u4e00\u6642\u9593\u53ea\u6709\u4e00\u500b\u5be6\u4f8b\u5728\u904b\u884c\u3002\u9019\u5c0d\u65bc\u9700\u8981\u9577\u6642\u9593\u904b\u884c\u7684\u4efb\u52d9\u6216\u9700\u8981\u7368\u4f54\u8cc7\u6e90\u7684\u8173\u672c\u7279\u5225\u91cd\u8981\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e9%9c%80%e8%a6%81%e9%98%b2%e6%ad%a2%e9%87%8d%e8%a4%87%e9%81%8b%e8%a1%8c%ef%bc%9f-fJdviWJzqp\">\u70ba\u4ec0\u9ebc\u9700\u8981\u9632\u6b62\u91cd\u8907\u904b\u884c\uff1f<\/h2>\n<ul>\n<li><strong>\u8cc7\u6e90\u7ba1\u7406\uff1a<\/strong>\u91cd\u8907\u904b\u884c\u7684\u8173\u672c\u53ef\u80fd\u6703\u6d88\u8017\u904e\u591a\u7684 CPU \u548c\u5167\u5b58\u8cc7\u6e90\uff0c\u5c0e\u81f4\u7cfb\u7d71\u6027\u80fd\u4e0b\u964d\u3002<\/li>\n<li><strong>\u6578\u64da\u4e00\u81f4\u6027\uff1a<\/strong>\u5728\u6578\u64da\u5eab\u64cd\u4f5c\u4e2d\uff0c\u91cd\u8907\u57f7\u884c\u53ef\u80fd\u5c0e\u81f4\u6578\u64da\u4e0d\u4e00\u81f4\u6216\u640d\u58de\u3002<\/li>\n<li><strong>\u932f\u8aa4\u8655\u7406\uff1a<\/strong>\u591a\u500b\u5be6\u4f8b\u540c\u6642\u904b\u884c\u53ef\u80fd\u6703\u5f15\u767c\u932f\u8aa4\uff0c\u589e\u52a0\u6545\u969c\u6392\u67e5\u7684\u96e3\u5ea6\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8-flock%ef%bc%9f-fJdviWJzqp\">\u5982\u4f55\u4f7f\u7528 Flock\uff1f<\/h2>\n<p>\u4f7f\u7528 flock \u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>flock [options] &lt;file&gt; &lt;command&gt;<\/code><\/pre>\n<p>\u5176\u4e2d\uff0c&lt;file&gt; \u662f\u7528\u65bc\u9396\u5b9a\u7684\u6587\u4ef6\uff0c&lt;command&gt; \u662f\u8981\u57f7\u884c\u7684\u547d\u4ee4\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u4f7f\u7528 flock \u4f86\u9632\u6b62\u8173\u672c\u91cd\u8907\u904b\u884c\uff1a<\/p>\n<h3 id=\"%e7%a4%ba%e4%be%8b%e8%85%b3%e6%9c%ac-fJdviWJzqp\">\u793a\u4f8b\u8173\u672c<\/h3>\n<pre><code>#!\/bin\/bash\n\n# \u5b9a\u7fa9\u9396\u5b9a\u6587\u4ef6\nLOCKFILE=\"\/tmp\/myscript.lock\"\n\n# \u4f7f\u7528 flock \u9396\u5b9a\u6587\u4ef6\n(\n    flock -n 9 || exit 1\n    echo \"\u8173\u672c\u958b\u59cb\u57f7\u884c...\"\n    # \u6a21\u64ec\u9577\u6642\u9593\u904b\u884c\u7684\u4efb\u52d9\n    sleep 30\n    echo \"\u8173\u672c\u57f7\u884c\u5b8c\u6210\"\n) 9&gt;\"$LOCKFILE\"<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u5b9a\u7fa9\u4e86\u4e00\u500b\u9396\u5b9a\u6587\u4ef6 \/tmp\/myscript.lock\u3002\u7576\u8173\u672c\u904b\u884c\u6642\uff0cflock \u5c07\u5617\u8a66\u7372\u53d6\u8a72\u6587\u4ef6\u7684\u9396\u3002\u5982\u679c\u9396\u5df2\u88ab\u5176\u4ed6\u5be6\u4f8b\u4f54\u7528\uff0c\u5247\u8173\u672c\u5c07\u9000\u51fa\uff0c\u907f\u514d\u91cd\u8907\u904b\u884c\u3002<\/p>\n<h2 id=\"%e9%80%b2%e4%b8%80%e6%ad%a5%e7%9a%84%e6%87%89%e7%94%a8-fJdviWJzqp\">\u9032\u4e00\u6b65\u7684\u61c9\u7528<\/h2>\n<p>\u9664\u4e86\u57fa\u672c\u7684\u9396\u5b9a\u529f\u80fd\uff0cflock \u9084\u652f\u6301\u591a\u7a2e\u9078\u9805\uff0c\u4f8b\u5982\uff1a<\/p>\n<ul>\n<li><strong>-n\uff1a<\/strong>\u975e\u963b\u585e\u6a21\u5f0f\uff0c\u5982\u679c\u7121\u6cd5\u7372\u53d6\u9396\u5247\u7acb\u5373\u9000\u51fa\u3002<\/li>\n<li><strong>-w\uff1a<\/strong>\u6307\u5b9a\u7b49\u5f85\u6642\u9593\uff0c\u5982\u679c\u5728\u6307\u5b9a\u6642\u9593\u5167\u7121\u6cd5\u7372\u53d6\u9396\u5247\u9000\u51fa\u3002<\/li>\n<\/ul>\n<p>\u9019\u4e9b\u9078\u9805\u53ef\u4ee5\u6839\u64da\u5177\u9ad4\u9700\u6c42\u9032\u884c\u8abf\u6574\uff0c\u4ee5\u9054\u5230\u6700\u4f73\u7684\u904b\u884c\u6548\u679c\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-fJdviWJzqp\">\u7d50\u8ad6<\/h2>\n<p>\u5728 CentOS \u74b0\u5883\u4e2d\uff0c\u4f7f\u7528 flock \u5de5\u5177\u53ef\u4ee5\u6709\u6548\u5730\u9632\u6b62\u8173\u672c\u7684\u91cd\u8907\u904b\u884c\uff0c\u5f9e\u800c\u63d0\u9ad8\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u548c\u8cc7\u6e90\u5229\u7528\u7387\u3002\u901a\u904e\u7c21\u55ae\u7684\u914d\u7f6e\u548c\u8173\u672c\u7de8\u5beb\uff0c\u7ba1\u7406\u54e1\u53ef\u4ee5\u8f15\u9b06\u5730\u63a7\u5236\u8173\u672c\u7684\u57f7\u884c\uff0c\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u8cc7\u6e90\u6d6a\u8cbb\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u5e6b\u52a9\u60a8\u66f4\u597d\u5730\u7ba1\u7406\u4f3a\u670d\u5668\u8cc7\u6e90\uff0c\u63d0\u5347\u696d\u52d9\u904b\u884c\u6548\u7387\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Learn how to prevent script duplication in CentOS using flock, ensuring efficient resource management and avoiding conflicts in execution.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4924],"tags":[],"class_list":["post-43442","post","type-post","status-publish","format-standard","hentry","category-setup-tutorials"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/43442","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=43442"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/43442\/revisions"}],"predecessor-version":[{"id":43443,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/43442\/revisions\/43443"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=43442"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=43442"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=43442"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}