\u5728LINUX\u4e2d\u4f60\u5e94\u8be5\u5148\u8f93\u5165crontab -e\uff0c\u7136\u540e\u5c31\u4f1a\u6709\u4e2avi\u7f16\u8f91\u754c\u9762\uff0c\u518d\u8f93\u51650 3 * * 1 \/clearigame2\u5185\u5bb9\u5230\u91cc\u9762 :wq \u4fdd\u5b58\u9000\u51fa\u3002<\/p>\n
\u5728LINUX\u4e2d\uff0c\u5468\u671f\u6267\u884c\u7684\u4efb\u52a1\u4e00\u822c\u7531cron\u8fd9\u4e2a\u5b88\u62a4\u8fdb\u7a0b\u6765\u5904\u7406[ps -ef|grep cron]\u3002cron\u8bfb\u53d6\u4e00\u4e2a\u6216\u591a\u4e2a\u914d\u7f6e\u6587\u4ef6\uff0c\u8fd9\u4e9b\u914d\u7f6e\u6587\u4ef6\u4e2d\u5305\u542b\u4e86\u547d\u4ee4\u884c\u53ca\u5176\u8c03\u7528\u65f6\u95f4\u3002<\/p>\n
cron\u7684\u914d\u7f6e\u6587\u4ef6\u79f0\u4e3a\u201ccrontab\u201d\uff0c\u662f\u201ccron table\u201d\u7684\u7b80\u5199\u3002<\/p>\n
\u4e00\u3001cron\u57283\u4e2a\u5730\u65b9\u67e5\u627e\u914d\u7f6e\u6587\u4ef6\uff1a<\/strong> \u4e8c\u3001\/etc\/crontab \u8fd9\u4e2a\u6587\u4ef6\u8d1f\u8d23\u5b89\u6392\u7531\u7cfb\u7edf\u7ba1\u7406\u5458\u5236\u5b9a\u7684\u7ef4\u62a4\u7cfb\u7edf\u4ee5\u53ca\u5176\u4ed6\u4efb\u52a1\u7684crontab\u3002<\/strong><\/p>\n \u4e09\u3001\/etc\/cron.d\/ \u8fd9\u4e2a\u76ee\u5f55\u7528\u6765\u5b58\u653e\u4efb\u4f55\u8981\u6267\u884c\u7684crontab\u6587\u4ef6\u6216\u811a\u672c\u3002<\/strong><\/p>\n \u56db\u3001\u6743\u9650<\/strong> \u5728crontab\u6587\u4ef6\u4e2d\u5982\u4f55\u8f93\u5165\u9700\u8981\u6267\u884c\u7684\u547d\u4ee4\u548c\u65f6\u95f4\u3002\u8be5\u6587\u4ef6\u4e2d\u6bcf\u884c\u90fd\u5305\u62ec\u516d\u4e2a\u57df\uff0c\u5176\u4e2d\u524d\u4e94\u4e2a\u57df\u662f\u6307\u5b9a\u547d\u4ee4\u88ab\u6267\u884c\u7684\u65f6\u95f4\uff0c\u6700\u540e\u4e00\u4e2a\u57df\u662f\u8981\u88ab\u6267\u884c\u7684\u547d\u4ee4\u3002 \u57fa\u672c\u683c\u5f0f :<\/strong><\/p>\n *****command<\/p>\n \u5206 \u65f6 \u65e5 \u6708 \u5468 \u547d\u4ee4<\/p>\n \u7b2c1\u5217\u8868\u793a\u5206\u949f1\uff5e59 \u6bcf\u5206\u949f\u7528*\u6216\u8005 *\/1\u8868\u793a<\/p>\n \u7b2c2\u5217\u8868\u793a\u5c0f\u65f61\uff5e23\uff080\u8868\u793a0\u70b9\uff09<\/p>\n \u7b2c3\u5217\u8868\u793a\u65e5\u671f1\uff5e31<\/p>\n \u7b2c4\u5217\u8868\u793a\u6708\u4efd1\uff5e12<\/p>\n \u7b2c5\u5217\u6807\u8bc6\u53f7\u661f\u671f0\uff5e6\uff080\u8868\u793a\u661f\u671f\u5929\uff09<\/p>\n \u7b2c6\u5217\u8981\u8fd0\u884c\u7684\u547d\u4ee4<\/p>\n crontab\u6587\u4ef6\u7684\u4e00\u4e9b\u4f8b\u5b50\uff1a<\/strong><\/p>\n \uff03\u6bcf\u665a\u768421:30\u91cd\u542fapache\u3002<\/p>\n 30 21 * * * \/usr\/local\/etc\/rc.d\/lighttpd restart<\/p>\n \uff03\u6bcf\u67081\u300110\u300122\u65e5<\/p>\n 45 4 1,10,22 * * \/usr\/local\/etc\/rc.d\/lighttpd restart<\/p>\n \uff03\u6bcf\u5929\u65e9\u4e0a6\u70b910\u5206<\/p>\n 10 6 * * * date<\/p>\n \uff03\u6bcf\u4e24\u4e2a\u5c0f\u65f6<\/p>\n 0 *\/2 * * * date<\/p>\n \uff03\u665a\u4e0a11\u70b9\u5230\u65e9\u4e0a8\u70b9\u4e4b\u95f4\u6bcf\u4e24\u4e2a\u5c0f\u65f6\uff0c\u65e9\u4e0a8\u70b9<\/p>\n 0 23-7\/2\uff0c8 * * * date<\/p>\n \uff03\u6bcf\u4e2a\u6708\u76844\u53f7\u548c\u6bcf\u4e2a\u793c\u62dc\u7684\u793c\u62dc\u4e00\u5230\u793c\u62dc\u4e09\u7684\u65e9\u4e0a11\u70b9<\/p>\n 0 11 4 * mon-wed date<\/p>\n \uff031\u6708\u4efd\u65e5\u65e9\u4e0a4\u70b9<\/p>\n 0 4 1 jan * date<\/p>\n \u5f88\u591a\u65f6\u5019\uff0c\u6211\u4eec\u8ba1\u5212\u4efb\u52a1\u9700\u8981\u7cbe\u786e\u5230\u79d2\u6765\u6267\u884c\uff0c\u6839\u636e\u4ee5\u4e0b\u65b9\u6cd5\uff0c\u53ef\u4ee5\u5f88\u5bb9\u6613\u5730\u4ee5\u79d2\u6267\u884c\u4efb\u52a1\u3002 \u6ce8\u610f\u5982\u679c\u7528\u5982\u679c\u547d\u4ee4\u7528\u5230%\u7684\u8bdd\u9700\u8981\u7528\\\u8f6c\u4e49<\/p>\n Crontab\u8868\u8fbe\u5f0f linux\u4e0b\u5b9a\u65f6\u6267\u884c\u4efb\u52a1\u7684\u65b9\u6cd5 \u5728LINUX\u4e2d\u4f60\u5e94\u8be5\u5148\u8f93\u5165crontab -e\uff0c\u7136\u540e\u5c31\u4f1a\u2026 Read More »<\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[18],"tags":[],"class_list":["post-1031","post","type-post","status-publish","format-standard","hentry","category-technique"],"_links":{"self":[{"href":"http:\/\/rain1024.com\/index.php\/wp-json\/wp\/v2\/posts\/1031","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/rain1024.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/rain1024.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/rain1024.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/rain1024.com\/index.php\/wp-json\/wp\/v2\/comments?post=1031"}],"version-history":[{"count":1,"href":"http:\/\/rain1024.com\/index.php\/wp-json\/wp\/v2\/posts\/1031\/revisions"}],"predecessor-version":[{"id":1388,"href":"http:\/\/rain1024.com\/index.php\/wp-json\/wp\/v2\/posts\/1031\/revisions\/1388"}],"wp:attachment":[{"href":"http:\/\/rain1024.com\/index.php\/wp-json\/wp\/v2\/media?parent=1031"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/rain1024.com\/index.php\/wp-json\/wp\/v2\/categories?post=1031"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/rain1024.com\/index.php\/wp-json\/wp\/v2\/tags?post=1031"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\n1\u3001\/var\/spool\/cron\/ \u8fd9\u4e2a\u76ee\u5f55\u4e0b\u5b58\u653e\u7684\u662f\u6bcf\u4e2a\u7528\u6237\u5305\u62ecroot\u7684crontab\u4efb\u52a1\uff0c\u6bcf\u4e2a\u4efb\u52a1\u4ee5\u521b\u5efa\u8005\u7684\u540d\u5b57\u547d\u540d\uff0c\u6bd4\u5982tom\u5efa\u7684crontab\u4efb\u52a1\u5bf9\u5e94\u7684\u6587\u4ef6\u5c31\u662f\/var\/spool\/cron\/tom\u3002
\n\u4e00\u822c\u4e00\u4e2a\u7528\u6237\u6700\u591a\u53ea\u6709\u4e00\u4e2acrontab\u6587\u4ef6\u3002<\/p>\n
\ncrontab\u6743\u9650\u95ee\u9898\u5230\/var\/adm\/cron\/\u4e0b\u4e00\u770b\uff0c\u6587\u4ef6cron.allow\u548ccron.deny\u662f\u5426\u5b58\u5728
\n\u7528\u6cd5\u5982\u4e0b\uff1a
\n1\u3001\u5982\u679c\u4e24\u4e2a\u6587\u4ef6\u90fd\u4e0d\u5b58\u5728\uff0c\u5219\u53ea\u6709root\u7528\u6237\u624d\u80fd\u4f7f\u7528crontab\u547d\u4ee4\u3002
\n2\u3001\u5982\u679ccron.allow\u5b58\u5728\u4f46cron.deny\u4e0d\u5b58\u5728\uff0c\u5219\u53ea\u6709\u5217\u5728cron.allow\u6587\u4ef6\u91cc\u7684\u7528\u6237\u624d\u80fd\u4f7f\u7528crontab\u547d\u4ee4\uff0c\u5982\u679croot\u7528\u6237\u4e5f\u4e0d\u5728\u91cc\u9762\uff0c\u5219root\u7528\u6237\u4e5f\u4e0d\u80fd\u4f7f\u7528crontab\u3002
\n3\u3001\u5982\u679ccron.allow\u4e0d\u5b58\u5728, cron.deny\u5b58\u5728\uff0c\u5219\u53ea\u6709\u5217\u5728cron.deny\u6587\u4ef6\u91cc\u9762\u7684\u7528\u6237\u4e0d\u80fd\u4f7f\u7528crontab\u547d\u4ee4\uff0c\u5176\u5b83\u7528\u6237\u90fd\u80fd\u4f7f\u7528\u3002
\n4\u3001\u5982\u679c\u4e24\u4e2a\u6587\u4ef6\u90fd\u5b58\u5728\uff0c\u5219\u5217\u5728cron.allow\u6587\u4ef6\u4e2d\u800c\u4e14\u6ca1\u6709\u5217\u5728cron.deny\u4e2d\u7684\u7528\u6237\u53ef\u4ee5\u4f7f\u7528crontab\uff0c\u5982\u679c\u4e24\u4e2a\u6587\u4ef6\u4e2d\u90fd\u6709\u540c\u4e00\u4e2a\u7528\u6237\uff0c
\n\u4ee5cron.allow\u6587\u4ef6\u91cc\u9762\u662f\u5426\u6709\u8be5\u7528\u6237\u4e3a\u51c6\uff0c\u5982\u679ccron.allow\u4e2d\u6709\u8be5\u7528\u6237\uff0c\u5219\u53ef\u4ee5\u4f7f\u7528crontab\u547d\u4ee4\u3002<\/p>\n
\n\u6bcf\u4e2a\u57df\u4e4b\u95f4\u4f7f\u7528\u7a7a\u683c\u6216\u8005\u5236\u8868\u7b26\u5206\u9694\u3002\u683c\u5f0f\u5982\u4e0b\uff1a
\nminute hour day-of-month month-of-year day-of-week commands
\n\u5408\u6cd5\u503c 00-59 00-23 01-31 01-12 0-6 (0 is sunday) commands\uff08\u4ee3\u8868\u8981\u6267\u884c\u7684\u811a\u672c\uff09
\n\u9664\u4e86\u6570\u5b57\u8fd8\u6709\u51e0\u4e2a\u4e2a\u7279\u6b8a\u7684\u7b26\u53f7\u5c31\u662f\"\"\u3001\"\/\"\u548c\"-\"\u3001\",\"\uff0c<\/em>\u4ee3\u8868\u6240\u6709\u7684\u53d6\u503c\u8303\u56f4\u5185\u7684\u6570\u5b57\uff0c\"\/\"\u4ee3\u8868\u6bcf\u7684\u610f\u601d,\"\/5\"\u8868\u793a\u6bcf5\u4e2a\u5355\u4f4d\uff0c\"-\"\u4ee3\u8868\u4ece\u67d0\u4e2a\u6570\u5b57\u5230\u67d0\u4e2a\u6570\u5b57,\",\"\u5206\u5f00\u51e0\u4e2a\u79bb\u6563\u7684\u6570\u5b57\u3002<\/p>\n
\n\u4ee5\u4e0b\u65b9\u6cd5\u5c06 \u6bcf10\u79d2\u6267\u884c\u4e00\u6b21<\/strong> \uff0c\u610f\u601d\u662f\u628a\u4e00\u5206\u949f\u52066\u6b21<\/p>\n# crontab -e\n* * * * * \/bin\/date >>\/tmp\/date.txt\n* * * * * sleep 10; \/bin\/date >>\/tmp\/date.txt\n* * * * * sleep 20; \/bin\/date >>\/tmp\/date.txt\n* * * * * sleep 30; \/bin\/date >>\/tmp\/date.txt\n* * * * * sleep 40; \/bin\/date >>\/tmp\/date.txt\n* * * * * sleep 50; \/bin\/date >>\/tmp\/date.txt\n<\/code><\/pre>\n# backup mysql\n00 01 * * * mysqldump -u root --password=passwd-d mustang > \/root\/backups\/mustang_$(date +\\%Y\\%m\\%d_\\%H\\%M\\%S).sql\n01 01 * * * mysqldump -u root --password=passwd-t mustang > \/root\/backups\/mustang-table_$(date +\\%Y\\%m\\%d_\\%H\\%M\\%S).sql\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"