{"id":519,"date":"2008-08-04T00:00:00","date_gmt":"2008-08-03T16:00:00","guid":{"rendered":"http:\/\/www.strongd.net\/?p=519"},"modified":"2011-07-15T09:22:27","modified_gmt":"2011-07-15T01:22:27","slug":"linux%e4%b8%8bcrontab%e6%97%b6%e9%97%b4%e7%9a%84%e6%a0%bc%e5%bc%8f%e8%af%b4%e6%98%8e","status":"publish","type":"post","link":"https:\/\/www.strongd.net\/?p=519","title":{"rendered":"linux\u4e0bcrontab\u65f6\u95f4\u7684\u683c\u5f0f\u8bf4\u660e"},"content":{"rendered":"<p><P><STRONG><FONT size=3>cron \u914d\u7f6e\u8ba1\u5212\u4efb\u52a1\u7684\u4e66\u5199\u683c\u5f0f<\/FONT><\/STRONG><\/P><br \/>\n<P><STRONG>\u8bf4\u660e\uff1a<\/STRONG><\/P><PRE>\u7b2c\u4e00\u6bb5\u5e94\u8be5\u5b9a\u4e49\u7684\u662f\uff1a\u5206\u949f\uff0c\u8868\u793a\u6bcf\u4e2a\u5c0f\u65f6\u7684\u7b2c\u51e0\u5206\u949f\u6765\u6267\u884c\u3002\u8303\u56f4\u662f\u4ece0-59<BR>\u7b2c\u4e8c\u6bb5\u5e94\u8be5\u5b9a\u4e49\u7684\u662f\uff1a\u5c0f\u65f6\uff0c\u8868\u793a\u4ece\u7b2c\u51e0\u4e2a\u5c0f\u65f6\u6765\u6267\u884c\uff0c\u8303\u56f4\u662f\u4ece0-23<BR>\u7b2c\u4e09\u6bb5\u5e94\u8be5\u5b9a\u4e49\u7684\u662f\uff1a\u65e5\u671f\uff0c\u8868\u793a\u4ece\u6bcf\u4e2a\u6708\u7684\u7b2c\u51e0\u5929\u6267\u884c\uff0c\u8303\u56f4\u4ece1-31<BR>\u7b2c\u56db\u6bb5\u5e94\u8be5\u5b9a\u4e49\u7684\u662f\uff1a\u6708\uff0c\u8868\u793a\u6bcf\u5e74\u7684\u7b2c\u51e0\u4e2a\u6708\u6765\u6267\u884c\uff0c\u8303\u56f4\u4ece1-12<BR>\u7b2c\u4e94\u6bb5\u5e94\u8be5\u5b9a\u4e49\u7684\u662f\uff1a\u5468\uff0c\u8868\u793a\u6bcf\u5468\u7684\u7b2c\u51e0\u5929\u6267\u884c\uff0c\u8303\u56f4\u4ece0-6\uff0c\u5176\u4e2d 0\u8868\u793a\u661f\u671f\u65e5\u3002<BR>\u6bcf\u516d\u6bb5\u5e94\u8be5\u5b9a\u4e49\u7684\u662f\uff1a\u7528\u6237\u540d\uff0c\u4e5f\u5c31\u662f\u6267\u884c\u7a0b\u5e8f\u8981\u901a\u8fc7\u54ea\u4e2a\u7528\u6237\u6765\u6267\u884c\uff0c\u8fd9\u4e2a\u4e00\u822c\u53ef\u4ee5\u7701\u7565\uff1b<BR>\u7b2c\u4e03\u6bb5\u5e94\u8be5\u5b9a\u4e49\u7684\u662f\uff1a\u6267\u884c\u7684\u547d\u4ee4\u548c\u53c2\u6570\u3002<BR><\/PRE><br \/>\n<P><STRONG>\u6ce8\uff1a<\/STRONG>\u5176\u4e2d\u7528\u6237\u540d\u53ef\u662f\u7701\u7565\uff0c\u7528\u6237\u540d\u5b9a\u4e49\u7684\u662f\u7a0b\u5e8f\u7528\u54ea\u4e2a\u7528\u6237\u6765\u6267\u884c\uff0c\u6bd4\u5982mysql\u670d\u52a1\u5668\uff0c\u6211\u4eec\u53ef\u4ee5\u5b9a\u4e49\u6210\u4ee5mysql\u7528\u6237\u6765\u542f\u52a8\u3001\u505c\u6b62\u3001\u91cd\u65b0 \u542f\u52a8\uff0c\u8fd9\u65f6\u8981\u5199\u4e0a\u7528\u6237\u540d\uff1b\u4e0d\u8fc7\u5bf9\u4e8ecron\u6765\u8bf4\u610f\u4e49\u4e0d\u662f\u592a\u5927\uff0c\u56e0\u4e3a\u6bcf\u4e2a\u7528\u6237\u90fd\u6709\u81ea\u5df1\u7684cron\u914d\u7f6e\u6587\u4ef6\u3002\u6709\u4e9b\u7a0b\u5e8f\u7684\u542f\u52a8\u5fc5\u987b\u7528\u5230root\u7528\u6237\uff0c\u8fd9\u65f6\u6211\u4eec\u5c31 \u53ef\u4ee5\u4fee\u6539root\u7528\u6237\u7684cron\u914d\u7f6e\u6587\u4ef6\u5c31\u884c\u4e86\u3002\u5728\u6bcf\u4e2a\u7528\u6237\u7684\u914d\u7f6e\u6587\u4ef6\u4e2d\uff0c\u4e0d\u5fc5\u6307\u5b9a\u7528\u6237\u540d\u3002<\/P><br \/>\n<P>\u6211\u4eec\u53ef\u4ee5\u628a\u8ba1\u5212\u4efb\u52a1\u5199\u5728\u5168\u5c40\u6027\u914d\u7f6e\u6587\u4ef6\u4e2d\uff0c\u5982\u679c\u60a8\u60f3\u628a\u4e00\u4e2a\u8ba1\u5212\u653e\u5165\u5168\u5c40\u6027\u914d\u7f6e\u6587\u4ef6\u4e2d\uff0c\u5c31\u5f97\u6539\u53d1\u884c\u7248\u6240\u5bf9\u5e94\u7684cron\u5168\u5c40\u914d\u7f6e\u6587\u4ef6\uff0c\u6bd4\u5982Fedora 5\u7684\u5168\u5c40\u6027\u914d\u7f6e\u6587\u4ef6\u662f\/etc\/crontab\u6587\u4ef6\uff1b<\/P><br \/>\n<P>\u6bcf\u4e2a\u7528\u6237\u4e5f\u80fd\u5b9a\u4e49\u81ea\u5df1\u7684cron\u914d\u7f6e\u6587\u4ef6\uff0c\u7528crontab -e \u547d\u4ee4\u6765\u5b9a\u4e49\uff1b<\/P><br \/>\n<P><STRONG>\u4e3e\u4e00\u4f8b\uff1a\u8ba9\u673a\u5668\u5728\u6bcf\u59298\u70b930\u5206\u91cd\u65b0\u542f\u52a8\uff1b<\/STRONG><\/P><br \/>\n<P><STRONG>\u5173\u4e8e\u65f6\u95f4<\/STRONG>\u683c\u5f0f\u4e2d\u67097\u4e2a\u5b57\u6bb5\u3002\u6211\u4eec\u53ef\u4ee5\u76f4\u63a5\u66f4\u6539\u6216\u8005\u6dfb\u52a0\uff0c\u5f53\u7136\u8fd9\u662f\u7cfb\u7edf\u4efb\u52a1\u8c03\u7528\u3002\u4e3e\u4e2a\u4f8b\u5b50\uff0c\u6bd4\u5982\u6211\u5728\u6bcf\u5929\u7684\u65e9\u4e0a8\u70b930\u5206\u91cd\u65b0\u542f\u52a8\u673a\u5668\uff0c\u5c31\u53ef\u4ee5\u5728<BR>\/etc\/crontab\u4e2d\u52a0\u5165\u4e0b\u9762\u7684\u4e24\u53e5\uff0c\u7b2c\u4e00\u53e5\u5c31\u662f\u6ce8\u91ca\u4e86\u3002\u4ee5#\u53f7\u5f00\u59cb\uff0c\u540e\u9762\u5199\u4e00\u4e2a\u81ea\u5df1\u80fd\u77e5\u9053\u8fd9\u662f\u4ec0\u4e48\u4efb\u52a1\u7684\u5907\u6ce8\uff1b<\/P><br \/>\n<DIV class=codeblock><CODE># reboot OS<BR>30 8 * * * root \/sbin\/reboot<\/CODE><\/DIV><br \/>\n<P>\u7b2c\u4e00\u6bb5\u5e94\u8be5\u5b9a\u4e49\u7684\u662f\uff1a\u5206\u949f\uff0c\u8868\u793a\u6bcf\u4e2a\u5c0f\u65f6\u7684\u7b2c\u51e0\u5206\u949f\u6765\u6267\u884c\u3002\u8303\u56f4\u662f\u4ece0-59<BR>\u7b2c\u4e8c\u6bb5\u5e94\u8be5\u5b9a\u4e49\u7684\u662f\uff1a\u5c0f\u65f6\uff0c\u8868\u793a\u4ece\u7b2c\u51e0\u4e2a\u5c0f\u65f6\u6765\u6267\u884c\uff0c\u8303\u56f4\u662f\u4ece0-23<BR>\u7b2c\u4e09\u6bb5\u5e94\u8be5\u5b9a\u4e49\u7684\u662f\uff1a\u65e5\u671f\uff0c\u8868\u793a\u4ece\u6bcf\u4e2a\u6708\u7684\u7b2c\u51e0\u5929\u6267\u884c\uff0c\u8303\u56f4\u4ece1-31<BR>\u7b2c\u56db\u6bb5\u5e94\u8be5\u5b9a\u4e49\u7684\u662f\uff1a\u6708\uff0c\u8868\u793a\u6bcf\u5e74\u7684\u7b2c\u51e0\u4e2a\u6708\u6765\u6267\u884c\uff0c\u8303\u56f4\u4ece1-12<BR>\u7b2c\u4e94\u6bb5\u5e94\u8be5\u5b9a\u4e49\u7684\u662f\uff1a\u5468\uff0c\u8868\u793a\u6bcf\u5468\u7684\u7b2c\u51e0\u5929\u6267\u884c\uff0c\u8303\u56f4\u4ece0-6\uff0c\u5176\u4e2d 0\u8868\u793a\u661f\u671f\u65e5\u3002<BR>\u6bcf\u516d\u6bb5\u5e94\u8be5\u5b9a\u4e49\u7684\u662f\uff1a\u7528\u6237\u540d\uff0c\u4e5f\u5c31\u662f\u6267\u884c\u7a0b\u5e8f\u8981\u901a\u8fc7\u54ea\u4e2a\u7528\u6237\u6765\u6267\u884c\uff0c\u8fd9\u4e2a\u4e00\u822c\u53ef\u4ee5\u7701\u7565\uff1b<BR>\u7b2c\u4e03\u6bb5\u5e94\u8be5\u5b9a\u4e49\u7684\u662f\uff1a\u6267\u884c\u7684\u547d\u4ee4\u548c\u53c2\u6570\u3002<\/P><br \/>\n<P>\u5bf9\u6bd4\u4e0a\u9762\u7684\u4f8b\u5b50\u5c31\u77e5\u9053\uff0c30\u662f\u4e0d\u662f\u5206\u949f\uff1f\uff1f8\u662f\u4e0d\u662f\u5c0f\u65f6\uff1f\u5982\u679c\u6709*\u4ee3\u8868\u7684\u5730\u65b9\uff0c\u8868\u793a\u5168\u90e8\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0c\u6bcf\u4e2a\u6708\uff0c\u6bcf\u5929\uff0c\u6bcf\u661f\u671f\u90fd\u8981\u6267\u884c\u3002root \u8868\u793a\u7528root\u7528\u6237\u6267\u884c\uff0c\u547d\u4ee4\u662f\/sbin\/reboot \uff0c\u4e5f\u5c31\u662f\u8bf4\uff0c\u7cfb\u7edf\u5728\u6bcf\u5929 8\u70b930\u5206\u91cd\u65b0\u542f\u52a8\uff1b<\/P><br \/>\n<P>\u6211\u4eec\u53ef\u4ee5\u628a\u6bcf\u59298\u70b930\u5206\u91cd\u65b0\u542f\u52a8\u7684\u8ba1\u5212\u4efb\u52a1\u5199\u5165cron\u5168\u5c40\u6027\u914d\u7f6e\u6587\u4ef6\u4e2d\uff0c\u4e5f\u53ef\u4ee5\u5b9a\u4e49\u5728root\u7528\u6237\u81ea\u5df1\u7684cron\u914d\u7f6e\u6587\u4ef6\u4e2d\u3002\u5982\u679c\u5b9a\u4e49\u5728 root\u81ea\u5df1\u7684\u914d\u7f6e\u6587\u4ef6\uff0c\u8bf7\u7528root\u8eab\u4efd\u6765\u6267\u884c crontab -e \u6765\u4fee\u6539\u914d\u7f6e\u6587\u4ef6\uff1bcrontab -e \u8fdb\u5165\u4fee\u6539\u914d\u7f6e\u6587\u4ef6\u7684\u8fc7\u7a0b\uff0c\u5176\u5b9e\u548cvi\u7684\u7528\u6cd5\u4e00\u6837.<\/P><br \/>\n<DIV><\/DIV><\/p>\n","protected":false},"excerpt":{"rendered":"<p>cron \u914d\u7f6e\u8ba1\u5212\u4efb\u52a1\u7684\u4e66\u5199\u683c\u5f0f \u8bf4\u660e\uff1a\u7b2c\u4e00\u6bb5\u5e94\u8be5\u5b9a\u4e49\u7684\u662f\uff1a\u5206\u949f\uff0c\u8868\u793a\u6bcf\u4e2a\u5c0f\u65f6\u7684\u7b2c\u51e0\u5206\u949f\u6765\u6267\u884c\u3002\u8303\u56f4\u662f\u4ece0-59\u7b2c\u4e8c\u6bb5\u5e94\u8be5\u5b9a\u4e49\u7684\u662f\uff1a\u5c0f\u65f6\uff0c\u8868\u793a\u4ece\u7b2c\u51e0\u4e2a\u5c0f\u65f6\u6765\u6267\u884c\uff0c\u8303\u56f4\u662f\u4ece0-23\u7b2c\u4e09\u6bb5\u5e94\u8be5\u5b9a\u4e49\u7684\u662f\uff1a\u65e5\u671f\uff0c\u8868\u793a\u4ece\u6bcf\u4e2a\u6708\u7684\u7b2c\u51e0\u5929\u6267\u884c\uff0c\u8303\u56f4\u4ece1-31\u7b2c\u56db\u6bb5\u5e94\u8be5\u5b9a\u4e49\u7684\u662f\uff1a\u6708\uff0c\u8868\u793a\u6bcf\u5e74\u7684\u7b2c\u51e0\u4e2a\u6708\u6765\u6267\u884c\uff0c\u8303\u56f4\u4ece1-12\u7b2c\u4e94\u6bb5\u5e94\u8be5\u5b9a\u4e49\u7684\u662f\uff1a\u5468\uff0c\u8868\u793a\u6bcf\u5468\u7684\u7b2c\u51e0\u5929\u6267\u884c\uff0c\u8303\u56f4\u4ece0-6\uff0c\u5176\u4e2d 0\u8868\u793a\u661f\u671f\u65e5\u3002\u6bcf\u516d\u6bb5\u5e94\u8be5\u5b9a\u4e49\u7684\u662f\uff1a\u7528\u6237\u540d\uff0c\u4e5f\u5c31\u662f\u6267\u884c\u7a0b\u5e8f\u8981\u901a\u8fc7\u54ea\u4e2a\u7528\u6237\u6765\u6267\u884c\uff0c\u8fd9\u4e2a\u4e00\u822c\u53ef\u4ee5\u7701\u7565\uff1b\u7b2c\u4e03\u6bb5\u5e94\u8be5\u5b9a\u4e49\u7684\u662f\uff1a\u6267\u884c\u7684\u547d\u4ee4\u548c\u53c2\u6570\u3002 \u6ce8\uff1a\u5176\u4e2d\u7528\u6237\u540d\u53ef\u662f\u7701\u7565\uff0c\u7528\u6237\u540d\u5b9a\u4e49\u7684\u662f\u7a0b\u5e8f\u7528\u54ea\u4e2a\u7528\u6237\u6765\u6267\u884c\uff0c\u6bd4\u5982mysql\u670d\u52a1\u5668\uff0c\u6211\u4eec\u53ef\u4ee5\u5b9a\u4e49\u6210\u4ee5mysql\u7528\u6237\u6765\u542f\u52a8\u3001\u505c\u6b62\u3001\u91cd\u65b0 \u542f\u52a8\uff0c\u8fd9\u65f6\u8981\u5199\u4e0a\u7528\u6237\u540d\uff1b\u4e0d\u8fc7\u5bf9\u4e8ecron\u6765\u8bf4\u610f\u4e49\u4e0d\u662f\u592a\u5927\uff0c\u56e0\u4e3a\u6bcf\u4e2a\u7528\u6237\u90fd\u6709\u81ea\u5df1\u7684cron\u914d\u7f6e\u6587\u4ef6\u3002\u6709\u4e9b\u7a0b\u5e8f\u7684\u542f\u52a8\u5fc5\u987b\u7528\u5230root\u7528\u6237\uff0c\u8fd9\u65f6\u6211\u4eec\u5c31 \u53ef\u4ee5\u4fee\u6539root\u7528\u6237\u7684cron\u914d\u7f6e\u6587\u4ef6\u5c31\u884c\u4e86\u3002\u5728\u6bcf\u4e2a\u7528\u6237\u7684\u914d\u7f6e\u6587\u4ef6\u4e2d\uff0c\u4e0d\u5fc5\u6307\u5b9a\u7528\u6237\u540d\u3002 \u6211\u4eec\u53ef\u4ee5\u628a\u8ba1\u5212\u4efb\u52a1\u5199\u5728\u5168\u5c40\u6027\u914d\u7f6e\u6587\u4ef6\u4e2d\uff0c\u5982\u679c\u60a8\u60f3\u628a\u4e00\u4e2a\u8ba1\u5212\u653e\u5165\u5168\u5c40\u6027\u914d\u7f6e\u6587\u4ef6\u4e2d\uff0c\u5c31\u5f97\u6539\u53d1\u884c\u7248\u6240\u5bf9\u5e94\u7684cron\u5168\u5c40\u914d\u7f6e\u6587\u4ef6\uff0c\u6bd4\u5982Fedora 5\u7684\u5168\u5c40\u6027\u914d\u7f6e\u6587\u4ef6\u662f\/etc\/crontab\u6587\u4ef6\uff1b \u6bcf\u4e2a\u7528\u6237\u4e5f\u80fd\u5b9a\u4e49\u81ea\u5df1\u7684cron\u914d\u7f6e\u6587\u4ef6\uff0c\u7528crontab -e \u547d\u4ee4\u6765\u5b9a\u4e49\uff1b \u4e3e\u4e00\u4f8b\uff1a\u8ba9\u673a\u5668\u5728\u6bcf\u59298\u70b930\u5206\u91cd\u65b0\u542f\u52a8\uff1b \u5173\u4e8e\u65f6\u95f4\u683c\u5f0f\u4e2d\u67097\u4e2a\u5b57\u6bb5\u3002\u6211\u4eec\u53ef\u4ee5\u76f4\u63a5\u66f4\u6539\u6216\u8005\u6dfb\u52a0\uff0c\u5f53\u7136\u8fd9\u662f\u7cfb\u7edf\u4efb\u52a1\u8c03\u7528\u3002\u4e3e\u4e2a\u4f8b\u5b50\uff0c\u6bd4\u5982\u6211\u5728\u6bcf\u5929\u7684\u65e9\u4e0a8\u70b930\u5206\u91cd\u65b0\u542f\u52a8\u673a\u5668\uff0c\u5c31\u53ef\u4ee5\u5728\/etc\/crontab\u4e2d\u52a0\u5165\u4e0b\u9762\u7684\u4e24\u53e5\uff0c\u7b2c\u4e00\u53e5\u5c31\u662f\u6ce8\u91ca\u4e86\u3002\u4ee5#\u53f7\u5f00\u59cb\uff0c\u540e\u9762\u5199\u4e00\u4e2a\u81ea\u5df1\u80fd\u77e5\u9053\u8fd9\u662f\u4ec0\u4e48\u4efb\u52a1\u7684\u5907\u6ce8\uff1b # reboot OS30 8 * * * root \/sbin\/reboot 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