{"id":1079,"date":"2019-04-07T08:00:29","date_gmt":"2019-04-07T00:00:29","guid":{"rendered":"https:\/\/freesilo.com\/?p=1079"},"modified":"2020-06-26T16:06:04","modified_gmt":"2020-06-26T08:06:04","slug":"%e6%a0%91%e8%8e%93%e6%b4%be-cron%e5%92%8ccrontab-%e5%ae%9a%e6%97%b6%e4%bb%bb%e5%8a%a1","status":"publish","type":"post","link":"https:\/\/freesilo.com\/?p=1079","title":{"rendered":"\u6811\u8393\u6d3e\u2014\u2014Cron\u548cCrontab \u5b9a\u65f6\u4efb\u52a1"},"content":{"rendered":"<h2 id=\"h2_1\">\u6811\u8393\u6d3e\u2014\u2014Cron\u548cCrontab\uff08\u5b9a\u65f6\u4efb\u52a1\uff09<\/h2>\n<p>&nbsp;<\/p>\n<p>Cron\u662fUnix\u7cfb\u7edf\u7684\u4e00\u4e2a\u914d\u7f6e\u5b9a\u671f\u4efb\u52a1\u7684\u5de5\u5177\uff0c\u7528\u4e8e\u5b9a\u671f\u6216\u8005\u4ee5\u4e00\u5b9a\u7684\u65f6\u95f4\u95f4\u9694\u6267\u884c\u4e00\u4e9b\u547d\u4ee4\u6216\u8005\u811a\u672c\uff1b\u53ef\u6267\u884c\u7684\u4efb\u52a1\u8303\u56f4\u53ef\u4ee5\u662f\u6bcf\u5929\u591c\u91cc\u81ea\u52a8\u5907\u4efd\u7528\u6237\u7684home\u6587\u4ef6\u5939\uff0c\u4e5f\u53ef\u4ee5\u6bcf\u4e2a\u5c0f\u65f6\u8bb0\u5f55CPU\u7684\u4fe1\u606f\u65e5\u5fd7\u3002<\/p>\n<p>crontab\uff08cron table\uff09\u547d\u4ee4\u7528\u4e8e\u7f16\u8f91\u6267\u884c\u4e2d\u7684\u5b9a\u671f\u4efb\u52a1\u5217\u8868\uff0c\u5e76\u4e14\u64cd\u4f5c\u662f\u57fa\u4e8e\u6bcf\u4e2a\u7528\u6237\u7684\uff0c\u6bcf\u4e00\u4e2a\u7528\u6237\uff08\u5305\u62ecroot\u7528\u6237\uff09\u90fd\u62e5\u6709\u81ea\u5df1\u7684crontab\u3002<\/p>\n<h1 id=\"h1_2\">EDITING CRONTAB\uff08\u7f16\u8f91crontab\uff09<\/h1>\n<p>\u8fd0\u884ccrontab\u548c-e\u9009\u9879\u6765\u7f16\u8f91cron table\uff1a<\/p>\n<pre>crontab -e<\/pre>\n<h1 id=\"h1_3\">SELECT AN EDIROR\uff08\u9009\u62e9\u4e00\u4e2a\u7f16\u8f91\u5668\uff09<\/h1>\n<p>\u7b2c\u4e00\u6b21\u8fd0\u884ccrontab\u547d\u4ee4\u7684\u65f6\u5019\u4f1a\u63d0\u793a\u4f60\u9009\u62e9\u4e00\u4e2a\u7f16\u8f91\u5668\u3002\u5982\u679c\u4f60\u4e0d\u786e\u5b9a\u4f7f\u7528\u54ea\u4e00\u4e2a\uff0c\u4f60\u53ef\u4ee5\u76f4\u63a5\u56de\u8f66\u9009\u62e9\u9ed8\u8ba4\u7684nano\u7f16\u8f91\u5668\u3002<\/p>\n<p>\u6bcf\u4e00\u9879cron\u5b9e\u4f53\u7684\u5185\u5bb9\u90fd\u5305\u542b\u516d\u4e2a\u90e8\u5206\uff1a\u5206\u949f\u3001\u5c0f\u65f6\u3001\u6708\u4efd\u4e2d\u7684\u54ea\u4e00\u5929\u3001\u5e74\u4efd\u4e2d\u7684\u54ea\u4e00\u6708\u3001\u661f\u671f\u4e2d\u7684\u54ea\u4e00\u5929\uff0c\u8fd8\u6709\u5b9a\u65f6\u6267\u884c\u7684\u547d\u4ee4\u3002<\/p>\n<pre># m h  dom mon dow   command\r\n\r\n# * * * * *  command to execute\r\n# \u252c \u252c \u252c \u252c \u252c\r\n# \u2502 \u2502 \u2502 \u2502 \u2502\r\n# \u2502 \u2502 \u2502 \u2502 \u2502\r\n# \u2502 \u2502 \u2502 \u2502 \u2514\u2500\u2500\u2500\u2500\u2500 \u661f\u671f\u4e2d\u7684\u54ea\u4e00\u5929(0-7)(\u4ece0\u52306\u4ee3\u8868\u661f\u671f\u65e5\u5230\u661f\u671f\u516d,\u4e5f\u53ef\u4ee5\u4f7f\u7528\u540d\u5b57;7\u662f\u661f\u671f\u5929,\u7b49\u540c\u4e8e0)\r\n# \u2502 \u2502 \u2502 \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500 \u6708\u4efd (1 - 12)\r\n# \u2502 \u2502 \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500 \u6708\u4efd\u4e2d\u7684\u65e5 (1 - 31)\r\n# \u2502 \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500 \u5c0f\u65f6 (0 - 23)\r\n# \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500 \u5206\u949f (0 - 59)<\/pre>\n<p>\u4f8b\u5982\uff1a<\/p>\n<pre>0 0 * * *  \/home\/pi\/backup.sh<\/pre>\n<p>\u8fd9\u9879cron\u5b9e\u4f8b\u5c06\u4f1a\u5728\u6bcf\u4e00\u5929\u7684\u5348\u591c\u6267\u884cbackup.sh\u811a\u672c\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>\u539f\u6587\u5730\u5740\uff1ahttp:\/\/www.raspberrypi.org\/documentation\/linux\/usage\/cron.md<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6811\u8393\u6d3e\u2014\u2014Cron\u548cCrontab\uff08\u5b9a\u65f6\u4efb\u52a1\uff09 &nbsp; Cron\u662fUnix&#8230;<br \/><a class=\"read-more-button\" href=\"https:\/\/freesilo.com\/?p=1079\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13,23],"tags":[],"class_list":["post-1079","post","type-post","status-publish","format-standard","hentry","category-linux","category-raspberry"],"_links":{"self":[{"href":"https:\/\/freesilo.com\/index.php?rest_route=\/wp\/v2\/posts\/1079","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/freesilo.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/freesilo.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/freesilo.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/freesilo.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1079"}],"version-history":[{"count":1,"href":"https:\/\/freesilo.com\/index.php?rest_route=\/wp\/v2\/posts\/1079\/revisions"}],"predecessor-version":[{"id":1080,"href":"https:\/\/freesilo.com\/index.php?rest_route=\/wp\/v2\/posts\/1079\/revisions\/1080"}],"wp:attachment":[{"href":"https:\/\/freesilo.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1079"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/freesilo.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1079"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/freesilo.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1079"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}