{"id":302,"date":"2014-03-23T12:29:22","date_gmt":"2014-03-23T04:29:22","guid":{"rendered":"http:\/\/ukonline2000.com\/?p=302"},"modified":"2014-03-23T12:29:22","modified_gmt":"2014-03-23T04:29:22","slug":"%e7%ae%80%e5%8d%95%e4%b8%a4%e6%ad%a5%e5%ae%9e%e7%8e%b0%e6%a0%91%e8%8e%93%e6%b4%be%e5%ae%9a%e6%97%b6%e8%bf%90%e8%a1%8c%e7%a8%8b%e5%ba%8f%e6%88%96%e5%91%bd%e4%bb%a4","status":"publish","type":"post","link":"http:\/\/ukonline2000.com\/?p=302","title":{"rendered":"\u7b80\u5355\u4e24\u6b65\u5b9e\u73b0\u6811\u8393\u6d3e\u5b9a\u65f6\u8fd0\u884c\u7a0b\u5e8f\u6216\u547d\u4ee4"},"content":{"rendered":"\n\n\n
Linux\u4e0b\u6709\u4e00\u4e2a\u5b9a\u65f6\u8fd0\u884c\u7684\u7a0b\u5e8f\u547d\u4ee4\u53eb\u201ccrontab\u201d\uff0c\u662f\u4efb\u52a1\u8c03\u5ea6\u7684crond\u5e38\u9a7b\u547d\u4ee4\uff0c\u662fLinux\u7cfb\u7edf\u4e0b\u7684\u5b9a\u65f6\u4efb\u52a1\u89e6\u53d1\u5668<\/span>\u00a0\u3002<\/span><\/span><\/span>
\n\u9650\u5236\u7528\u6237\u4f7f\u7528crontab\u7684\u6587\u4ef6\u6709\uff1a\/etc\/cron.allow \/etc\/cron.deny \u3002
\n\u5f53\u4f7f\u7528crontab\u5efa\u7acb\u5de5\u4f5c\u6392\u7a0b\u540e\uff0c\u5c06\u88ab\u8bb0\u5f55\u5230\/var\/spool\/cron\u91cc\u3002
\ncron\u6267\u884c\u7684\u6bcf\u4e00\u9879\u5de5\u4f5c\u90fd\u88ab\u8bb0\u5f55\u5230\/varlog\/cron\u91cc\u53bb\u3002<\/span>
\ncrontab\u53c2\u6570\uff1a<\/span>
\n-u\uff1a\u53ea\u6709root\u624d\u53ef\u80fd\uff0c\u5e2e\u5176\u4ed6\u7528\u6237\u5efa\u7acb\u6216\u79fb\u9664\u5de5\u4f5c\u6392\u7a0b\u3002
\n-l\uff1a\u67e5\u9605crontab\u7684\u5de5\u4f5c\u5185\u5bb9
\n-r\uff1a\u79fb\u9664\u6240\u6709\u7684crontab\u7684\u5de5\u4f5c\u5185\u5bb9\uff0c\u79fb\u9664\u4e00\u9879\uff0c\u7528-e\u7f16\u8f91\u3002<\/span>
\n\u6bcf\u9879\u5de5\u4f5c\u6709\u516d\u4e2a\u5b57\u6bb5\u5206\u522b\u662f\uff1a<\/span>
\n\u5206\u949f\u00a0 \u00a0 \u5c0f\u65f6\u00a0 \u00a0 \u65e5\u671f\u00a0 \u00a0 \u6708\u4efd\u00a0 \u00a0 \u5468\u00a0 \u00a0 \u6307\u4ee4
\n0-59\u00a0 \u00a0 0-23\u00a0 \u00a0 1-31\u00a0 \u00a0 1-12\u00a0 \u00a0 0-7\u00a0 \u00a0 \u6307\u4ee4\u00a0 \u00a0\u00a0 \u00a0\u00a0 \u00a0#0\u548c7\u90fd\u4ee3\u8868\u661f\u671f\u5929<\/span>
\n\u8f85\u52a9\u7279\u6b8a\u5b57\u7b26\uff1a<\/span>
\n* \uff08\u661f\u53f7\uff09\u4ee3\u8868\u4efb\u4f55\u65f6\u523b
\n\uff0c\uff08\u9017\u53f7\uff09\u4ee3\u8868\u5206\u9694\u65f6\u5019\u3002\u59823\u70b9\u4e0e6\u70b9 \u5c31\u662f3,6
\n-\uff08\u51cf\u53f7\uff09\u4ee3\u8868\u4e00\u6bb5\u65f6\u95f4\u8303\u56f4\u5185\u3002\u5982\uff1a3\u70b9\u52306\u70b9 \u5c31\u662f3-6
\n\/n\uff08\u659c\u7ebf\uff09n\u4ee3\u8868\u6570\u5b57\uff0c\u5373\u6bcf\u9694n\u5355\u4f4d\u3002\u5982\u6bcf\u9694\u4e94\u5206\u949f\uff0c\/5<\/span><\/p>\n

\u4ee5\u4e0b\u6211\u4eec\u4e3e\u4e2a\u4f8b\u5b50\uff0c\u6bd4\u5982\u6bcf\u665a\u5b9a\u65f623:50\u5206\u9700\u8981\u5173\u673a
\n1.\u7f16\u8f91crontab \u4efb\u52a1\uff1a<\/span>
\n$crontab -e<\/span>
\n2.\u518d\u6587\u4ef6\u7684\u6700\u540e\u4e00\u884c\u6dfb\u52a0\u4ee5\u4e0b\u8fd9\u884c\u5185\u5bb9<\/span>\uff1a<\/span>
\n50 23 * * * \/sbin\/shutdown -h now<\/span><\/p>\n

\u6ce8\uff1a50 23 \u4ee3\u8868 \u6bcf\u5929\u768423\uff1a50\uff0c<\/span>\u6267\u884c\u7684\u547d\u4ee4\u5c31\u662f\u201cshutdown -h now\u201d<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Linux\u4e0b\u6709\u4e00\u4e2a\u5b9a\u65f6\u8fd0\u884c\u7684\u7a0b\u5e8f\u547d\u4ee4\u53eb\u201ccrontab\u201d\uff0c\u662f\u4efb\u52a1\u8c03\u5ea6\u7684crond … \u7ee7\u7eed\u9605\u8bfb →<\/span><\/a><\/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":[],"class_list":["post-302","post","type-post","status-publish","format-standard","hentry","category-raspberry-pi"],"_links":{"self":[{"href":"http:\/\/ukonline2000.com\/index.php?rest_route=\/wp\/v2\/posts\/302","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/ukonline2000.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/ukonline2000.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/ukonline2000.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/ukonline2000.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=302"}],"version-history":[{"count":1,"href":"http:\/\/ukonline2000.com\/index.php?rest_route=\/wp\/v2\/posts\/302\/revisions"}],"predecessor-version":[{"id":303,"href":"http:\/\/ukonline2000.com\/index.php?rest_route=\/wp\/v2\/posts\/302\/revisions\/303"}],"wp:attachment":[{"href":"http:\/\/ukonline2000.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=302"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/ukonline2000.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=302"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/ukonline2000.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=302"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}