{"id":836,"date":"2020-01-11T23:17:19","date_gmt":"2020-01-11T15:17:19","guid":{"rendered":"http:\/\/zkeeer.space\/?p=836"},"modified":"2020-01-11T23:18:25","modified_gmt":"2020-01-11T15:18:25","slug":"linux%e4%b8%8b%e5%ae%9a%e6%97%b6%e4%bb%bb%e5%8a%a1-crontab%e7%9a%84%e4%bd%bf%e7%94%a8","status":"publish","type":"post","link":"http:\/\/zkeeer.space\/?p=836","title":{"rendered":"linux\u4e0b\u5b9a\u65f6\u4efb\u52a1&#8211;crontab\u7684\u4f7f\u7528"},"content":{"rendered":"<h4>1.\u4ecb\u7ecd<\/h4>\n<p>\u4f7f\u7528crontab &#8211;help\uff0c\u53ef\u4ee5\u770b\u5230\u4e0b\u9762\u7684\u9009\u9879<\/p>\n<div class=\"container\">\n<div class=\"line number1 index0 alt2\"><code class=\"shell plain\">usage:\u00a0 <\/code><code class=\"shell functions\">crontab<\/code> <code class=\"shell plain\">[-u user] <\/code><code class=\"shell functions\">file<\/code><\/div>\n<div class=\"line number2 index1 alt1\"><code class=\"shell spaces\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/code><code class=\"shell functions\">crontab<\/code> <code class=\"shell plain\">[-u user] [ -e | -l | -r ]<\/code><\/div>\n<div class=\"line number3 index2 alt2\"><code class=\"shell spaces\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/code><code class=\"shell plain\">(default operation is replace, per 1003.2)<\/code><\/div>\n<div class=\"line number4 index3 alt1\"><code class=\"shell spaces\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/code><code class=\"shell plain\">-e\u00a0\u00a0\u00a0\u00a0\u00a0 (edit user's <\/code><code class=\"shell functions\">crontab<\/code><code class=\"shell plain\">)<\/code><\/div>\n<div class=\"line number5 index4 alt2\"><code class=\"shell spaces\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/code><code class=\"shell plain\">-l\u00a0\u00a0\u00a0\u00a0\u00a0 (list user's <\/code><code class=\"shell functions\">crontab<\/code><code class=\"shell plain\">)<\/code><\/div>\n<div class=\"line number6 index5 alt1\"><code class=\"shell spaces\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/code><code class=\"shell plain\">-r\u00a0\u00a0\u00a0\u00a0\u00a0 (delete user's <\/code><code class=\"shell functions\">crontab<\/code><code class=\"shell plain\">)<\/code><\/div>\n<div class=\"line number7 index6 alt2\"><code class=\"shell spaces\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/code><code class=\"shell plain\">-i\u00a0\u00a0\u00a0\u00a0\u00a0 (prompt before deleting user's <\/code><code class=\"shell functions\">crontab<\/code><code class=\"shell plain\">)<\/code><\/div>\n<div class=\"line number8 index7 alt1\"><code class=\"shell spaces\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/code><code class=\"shell plain\">-s\u00a0\u00a0\u00a0\u00a0\u00a0 (selinux context)<\/code><\/div>\n<\/div>\n<p>\u914d\u7f6e\u6587\u4ef6\u4f4d\u4e8e\/var\/spool\/cron\/crontabs\/&lt;username&gt;\uff0c\u8bb0\u5f97\u5907\u4efd\u914d\u7f6e\u6587\u4ef6\uff0c\u914d\u7f6e\u4e22\u5931\u53ef\u4ee5\u627e\u56de\u3002\u4f46\u662f\u66f4\u5efa\u8bae\u4f7f\u7528crontab -e\u547d\u4ee4\u76f4\u63a5\u7f16\u8f91\u3002<\/p>\n<h4>2.crontab \u8bbe\u7f6e\u548c\u89c4\u5219<\/h4>\n<h5>2.1 \/etc\/crontab \u91cc\u53ef\u4ee5\u914d\u7f6e\u4ee5\u4e0b\u53d8\u91cf\uff1a<\/h5>\n<ul>\n<li>1.SHELL \u6307\u660e\u7cfb\u7edf\u8981\u4f7f\u7528\u54ea\u4e2ashell\uff0c\u4f8b\u5982bash<\/li>\n<li>2.PATH \u6307\u5b9a\u4e86\u7cfb\u7edf\u6267\u884c\u547d\u4ee4\u7684\u8def\u5f84<\/li>\n<li>3.MAILTO \u53ef\u4ee5\u8bbe\u7f6ecrond\u4efb\u52a1\u4fe1\u606f\u901a\u8fc7\u90ae\u4ef6\u53d1\u9001<\/li>\n<li>4.HOME \u6307\u5b9a\u4e86\u5728\u6267\u884c\u547d\u4ee4\u6216\u8005\u811a\u672c\u65f6\u4f7f\u7528\u7684\u4e3b\u76ee\u5f55\u3002<\/li>\n<\/ul>\n<h5>2.2\u65f6\u95f4\u89c4\u5219\u8bbe\u7f6e<\/h5>\n<p>* * * * * \u5206\u522b\u4ee3\u8868\u4e86\u5206\u949f\/\u5c0f\u65f6\/\u6bcf\u6708\u7684\u5929\/\u6708\u4efd\/\u5468\u51e0<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-852 size-large\" src=\"http:\/\/zkeeer.space\/wp-content\/uploads\/2020\/01\/\u65e0\u68071111-1024x576-1024x576.png\" alt=\"\" width=\"1024\" height=\"576\" srcset=\"http:\/\/zkeeer.space\/wp-content\/uploads\/2020\/01\/\u65e0\u68071111-1024x576.png 1024w, http:\/\/zkeeer.space\/wp-content\/uploads\/2020\/01\/\u65e0\u68071111-1024x576-300x169.png 300w, http:\/\/zkeeer.space\/wp-content\/uploads\/2020\/01\/\u65e0\u68071111-1024x576-768x432.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>\u6211\u7684\u7406\u89e3 crontab \u65f6\u95f4\u89c4\u5219\u5927\u4f53\u5206\u4e3a\u4e09\u79cd\uff1a\u65f6\u95f4\u70b9\uff0c\u65f6\u95f4\u6bb5\uff0c\u9891\u7387<\/p>\n<p><strong>2.2.1 \u65f6\u95f4\u70b9\uff1a\u6bd4\u5982\u51e0\u70b9\u6267\u884c\uff0c\u51e0\u5206\u6267\u884c\uff0c\u53ef\u4ee5\u5355\u7528\u6570\u5b57\u8868\u793a<\/strong><\/p>\n<p>eg.\u6211\u8981\u5728\u6bcf\u592912\u70b945\u5206\u6267\u884c\u6253\u5305\u52a8\u4f5c<\/p>\n<p><code>45 12 * * * zip -r test.zip test\/<\/code><\/p>\n<p>\u6216\u8005\u6bcf\u5c0f\u65f6\u7684\u7b2c10\u5206\u949f\uff0c20\u5206\u949f\uff0c40\u5206\u949f\u7684\u65f6\u5019\u6267\u884c\u6253\u5305\u4efb\u52a1<\/p>\n<p><code>10,20,40 * * * * zip -r test.zip test\/<\/code><\/p>\n<p><strong>2.2.2 \u65f6\u95f4\u6bb5\uff1a\u6bd4\u5982\u51e0\u70b9\u5230\u51e0\u70b9\u6267\u884c\u4ec0\u4e48\u52a8\u4f5c\uff0c\u53ef\u4ee5\u7528-\u6765\u8868\u793a<\/strong><\/p>\n<p>eg.\u6211\u8981\u5728\u4e0a\u53488\u523012\u70b9\u7684\u6574\u70b9\u65f6\u523b\u8fdb\u884c\u6253\u5305<\/p>\n<p><code>0 8-12 * * * zip -r test.zip test\/<\/code><\/p>\n<p><strong>2.2.3 \u9891\u7387\uff0c\u6bd4\u5982\u9694\u51e0\u4e2a\u5c0f\u65f6\u6267\u884c\u4ec0\u4e48\u52a8\u4f5c\uff0c\u53ef\u4ee5\u7528\/\u6765\u8868\u793a<\/strong><\/p>\n<p>eg.\u6211\u8981\u6bcf\u96942\u4e2a\u5c0f\u65f6\u6253\u5305\u4e00\u6b21<\/p>\n<p><code>* *\/2 * * * zip -r test.zip test\/<\/code><\/p>\n<p><strong>2.2.4\u8fd8\u53ef\u4ee5\u65f6\u95f4\u6bb5\u548c\u9891\u7387\u8fdb\u884c\u7ec4\u5408\uff0c\u67d0\u65f6\u95f4\u6bb5\u5185\u6bcf\u591a\u957f\u65f6\u95f4\u6267\u884c\u4e00\u6b21\u3002<\/strong><\/p>\n<p>eg.\u6211\u8981\u5728\u4e0a\u53486\u70b9\u523012\u70b9\uff0c\u6bcf\u9694\u4e00\u5c0f\u65f6\u6253\u5305\u4e00\u6b21<\/p>\n<p><code>* 6-12\/1 * * * zip -r test.zip test\/<\/code><\/p>\n<p>\u6216\u8005\u6211\u8981\u5728\u4e0a\u53486\u70b9\u523012\u70b9\uff0c\u6bcf\u9694\u5341\u5206\u949f\u6253\u5305\u4e00\u6b21<\/p>\n<p><code>*\/10 6-12 * * * zip -r test.zip test\/<\/code><\/p>\n<p>\u540e\u9762 \u7684\u5929\u3001\u6708\u4efd\u3001\u5468\u90fd\u53ef\u4ee5\u8fd9\u4e48\u7528\uff0c\u5728\u8fd9\u513f\u629b\u7816\u5f15\u7389\u4e86\u3002<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>1.\u4ecb\u7ecd \u4f7f\u7528crontab &#038;#821 &hellip; <a href=\"http:\/\/zkeeer.space\/?p=836\" class=\"more-link\">More <span class=\"screen-reader-text\">linux\u4e0b\u5b9a\u65f6\u4efb\u52a1&#8211;crontab\u7684\u4f7f\u7528<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[58],"tags":[59],"_links":{"self":[{"href":"http:\/\/zkeeer.space\/index.php?rest_route=\/wp\/v2\/posts\/836"}],"collection":[{"href":"http:\/\/zkeeer.space\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/zkeeer.space\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/zkeeer.space\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/zkeeer.space\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=836"}],"version-history":[{"count":3,"href":"http:\/\/zkeeer.space\/index.php?rest_route=\/wp\/v2\/posts\/836\/revisions"}],"predecessor-version":[{"id":854,"href":"http:\/\/zkeeer.space\/index.php?rest_route=\/wp\/v2\/posts\/836\/revisions\/854"}],"wp:attachment":[{"href":"http:\/\/zkeeer.space\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=836"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/zkeeer.space\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=836"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/zkeeer.space\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=836"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}