1.需求：查看日志是否发送邮件成功
2.数据库中查到相关的id号
代码：cat -n test.log |grep "地形" 得到关键日志的行号
[**@app3.*s:/app/local/jboss/tw/log]$ cat -n server.log|grep '779571' 1933 2017-05-25 00:23:09,245 DEBUG [com.ticketweb.report.service.ReportManagementBean] Current scheduled report's saved report id: 779571
得到关键日志的行号,此时如果我想
查看这个关键字前10行和后10行的日志: cat -n server.log |tail -n +1933 |head -n 20
tail -n +1933 表示查询1933 行之后的日志
head -n 20 则表示在前面的查询结果里再查前20条记录
[*@app3.*cs:/app/local/jboss/tw/log]$ cat -n server.log|tail -n +1923|head -n 20 1923 2017-05-25 00:23:09,242 DEBUG [com.*.ReportManagementBean] Calling MailService.sendEmail(message) to send Email for scheduledReport id:602541 1924 2017-05-25 00:23:09,242 DEBUG [com.*.ReportManagementBean] To:tcttemplate@gmail.com 1925 2017-05-25 00:23:09,242 DEBUG [com.*.ReportManagementBean] CC:null 1926 2017-05-25 00:23:09,242 DEBUG [com.*.ReportManagementBean] Subject:alam test 3 uk 1927 2017-05-25 00:23:09,242 DEBUG [com.*.ReportManagementBean] Report sent by MailService.sendEmail(message).Please see attached for the reports. 1928 2017-05-25 00:23:09,244 DEBUG [com.*.schedulable.ReportEmailSendHelper] Email sent on: 2017-05-25 00:23:09.244 1929 2017-05-25 00:23:09,244 DEBUG [com.*.schedulable.ReportEmailSendHelper] Emailing report id: 602611 , name: alam master uk 11 1930 2017-05-25 00:23:09,245 DEBUG [com.*.ReportEmailSendHelper] Emailing starts on2017-05-25 00:23:09.244 1931 2017-05-25 00:23:09,245 DEBUG [com.*.ReportManagementBean] Current scheduled report id: 602611 1932 2017-05-25 00:23:09,245 DEBUG [com.*.ReportManagementBean] Current scheduled report's orgId: 4 1933 2017-05-25 00:23:09,245 DEBUG [com.*.ReportManagementBean] Current scheduled report's saved report id: 779571 1934 2017-05-25 00:23:09,245 DEBUG [com.*.ReportManagementBean] Current scheduled report's saved report's eid: null 1935 2017-05-25 00:23:09,246 DEBUG [com.*.ReportManagementBean] Generating the TemplateReportConfig by calling ReportConfigFactory.getConfig(...) 1936 2017-05-25 00:23:09,270 DEBUG [com.*.ReportManagementBean] Initializing the TemplateReportConfig object... 1937 2017-05-25 00:23:09,270 DEBUG [com.*.ReportManagementBean] The value of txDate_toDate has been cut off to the prev day mid night:2017-05-24+23:59:59 1938 2017-05-25 00:23:09,270 DEBUG [com.*.ReportManagementBean] The value of txDate_toDate has been cut off to the prev day mid night:2017-05-24+23:59:59 1939 2017-05-25 00:23:09,270 DEBUG [com.*.ReportManagementBean] The value of txDate_toDate has been cut off to the prev day mid night:2017-05-24+23:59:59 1940 2017-05-25 00:23:09,270 DEBUG [com.*.ReportManagementBean] saved report param name is: country saved report param value is GB 1941 2017-05-25 00:23:09,270 DEBUG [com.*.ReportManagementBean] The value of txDate_toDate has been cut off to the prev day mid night:2017-05-24+23:59:59 1942 2017-05-25 00:23:09,270 DEBUG [com.*.ReportManagementBean] Initialized the TemplateReportConfig object successfully.