【转】【Linux命令】linux查看某个时间段的⽇志（sed-n）前⾔
在linux上查⽇志的时候，如果我想出某个时间段的⽇志，⽐如查今天早上8点到下午2点的⽇志。
⽤grep不太⽅便直接过滤出来，可以使⽤sed根据时间去查
sed -n '/开始时间⽇期/,/结束时间⽇期/p' all.log
查⽇志
⽐如下⾯这段⽇志，前⾯的时间格式都是类似2019-10-21 07:44:20
2019-10-24 21:33:31,678 [quest:93] [base:get_response] [WARNING]- Not Found: /http:/123.125.114.144/
2019-10-24 21:33:31,679 [django.server:124] [basehttp:log_message] [WARNING]- "HEAD 123.125.114.144/ HTTP/1.1" 404 1678
2019-10-24 22:14:04,121 [django.server:124] [basehttp:log_message] [INFO]- code 400, message Bad request version ('HTTP')
2019-10-24 22:14:04,122 [django.server:124] [basehttp:log_message] [WARNING]- "GET ../../mnt/custom/ProductDefinition HTTP" 400 -
2019-10-24 22:16:21,052 [django.server:124] [basehttp:log_message] [INFO]- "GET /api/login HTTP/1.1" 301 0
2019-10-24 22:16:21,123 [django.server:124] [basehttp:log_message] [INFO]- "GET /api/login/ HTTP/1.1" 200 3876
2019-10-24 22:16:21,192 [django.server:124] [basehttp:log_message] [INFO]- "GET /static/assets/img/main_bg.png HTTP/1.1" 200 2801
2019-10-24 22:16:21,196 [django.server:124] [basehttp:log_message] [INFO]- "GET /static/assets/iconfont/style.css HTTP/1.1" 200 1638
2019-10-24 22:16:21,229 [django.server:124] [basehttp:log_message] [INFO]- "GET /static/assets/img/bg.jpg HTTP/1.1" 200 135990
2019-10-24 22:16:21,307 [django.server:124] [basehttp:log_message] [INFO]- "GET /static/assets/iconfont/f?u4m6fy HTTP/1.1" 200 6900
2019-10-24 22:16:23,525 [django.server:124] [basehttp:log_message] [INFO]- "POST /api/login/ HTTP/1.1" 302 0
2019-10-24 22:16:23,618 [django.server:124] [basehttp:log_message] [INFO]- "GET /api/index/ HTTP/1.1" 200 18447
2019-10-24 22:16:23,709 [django.server:124] [basehttp:log_message] [INFO]- "GET /static/assets/js/commons.js HTTP/1.1" 200 13209
2019-10-24 22:16:23,712 [django.server:124] [basehttp:log_message] [INFO]- "GET /static/assets/css/admin.css HTTP/1.1" 200 19660
linux在线命令查询平台2019-10-24 22:16:23,712 [django.server:124] [basehttp:log_message] [INFO]- "GET /static/assets/css/common.css HTTP/1.1" 200 1004
2019-10-24 22:16:23,714 [django.server:124] [basehttp:log_message] [INFO]- "GET /static/assets/js/app.js HTTP/1.1" 200 20844
2019-10-24 22:16:26,509 [django.server:124] [basehttp:log_message] [INFO]- "GET /api/report_list/1/ HTTP/1.1" 200 14649
2019-10-24 22:16:51,496 [django.server:124] [basehttp:log_message] [INFO]- "GET /api/test_list/1/ HTTP/1.1" 200 24874
2019-10-24 22:16:51,721 [django.server:124] [basehttp:log_message] [INFO]- "POST /api/add_case/ HTTP/1.1" 200 0
2019-10-24 22:16:59,707 [django.server:124] [basehttp:log_message] [INFO]- "GET /api/test_list/1/ HTTP/1.1" 200 24874
2019-10-24 22:16:59,909 [django.server:124] [basehttp:log_message] [INFO]- "POST /api/add_case/ HTTP/1.1" 200 0
2019-10-24 22:17:01,306 [django.server:124] [basehttp:log_message] [INFO]- "GET /api/edit_case/1/ HTTP/1.1" 200 36504
2019-10-24 22:17:06,265 [django.server:124] [basehttp:log_message] [INFO]- "GET /api/add_project/ HTTP/1.1" 200 17737
2019-10-24 22:17:07,825 [django.server:124] [basehttp:log_message] [INFO]- "GET /api/project_list/1/ HTTP/1.1" 200 29789
2019-10-24 22:17:13,116 [django.server:124] [basehttp:log_message] [INFO]- "GET /api/add_config/ HTTP/1.1" 200 24816
2019-10-24 22:17:19,671 [django.server:124] [basehttp:log_message] [INFO]- "GET /api/config_list/1/ HTTP/1.1" 200 19532
⽐如我要查上⾯的从2019-10-24 22:16:21到2019-10-24 22:16:59这个时间段的⽇志
sed -n '/2019-10-24 22:16:21/,/2019-10-24 22:16:59/p' all.log
[root@VM_0_2_centos logs]# sed -n '/2019-10-24 22:16:21/,/2019-10-24 22:16:59/p' all.log
2019-10-24 22:16:21,052 [django.server:124] [basehttp:log_message] [INFO]- "GET /api/login HTTP/1.1" 301 0
2019-10-24 22:16:21,123 [django.server:124] [basehttp:log_message] [INFO]- "GET /api/login/ HTTP/1.1" 200 3876
2019-10-24 22:16:21,192 [django.server:124] [basehttp:log_message] [INFO]- "GET /static/assets/img/main_bg.png HTTP/1.1" 200 2801
2019-10-24 22:16:21,196 [django.server:124] [basehttp:log_message] [INFO]- "GET /static/assets/iconfont/style.css HTTP/1.1" 200 1638
2019-10-24 22:16:21,229 [django.server:124] [basehttp:log_message] [INFO]- "GET /static/assets/img/bg.jpg HTTP/1.1" 200 135990
2019-10-24 22:16:21,307 [django.server:124] [basehttp:log_message] [INFO]- "GET /static/assets/iconfont/f?u4m6fy HTTP/1.1" 200 6900
2019-10-24 22:16:23,525 [django.server:124] [basehttp:log_message] [INFO]- "POST /api/login/ HTTP/1.1" 302 0
2019-10-24 22:16:23,618 [django.server:124] [basehttp:log_message] [INFO]- "GET /api/index/ HTTP/1.1" 200 18447
2019-10-24 22:16:23,709 [django.server:124] [basehttp:log_message] [INFO]- "GET /static/assets/js/commons.js HTTP/1.1" 200 13209
2019-10-24 22:16:23,712 [django.server:124] [basehttp:log_message] [INFO]- "GET /static/assets/css/admin.css HTTP/1.1" 200 19660
2019-10-24 22:16:23,712 [django.server:124] [basehttp:log_message] [INFO]- "GET /static/assets/css/common.css HTTP/1.1" 200 1004
2019-10-24 22:16:23,714 [django.server:124] [basehttp:log_message] [INFO]- "GET /static/assets/js/app.js HTTP/1.1" 200 20844
2019-10-24 22:16:26,509 [django.server:124] [basehttp:log_message] [INFO]- "GET /api/report_list/1/ HTTP/1.1" 200 14649
2019-10-24 22:16:51,496 [django.server:124] [basehttp:log_message] [INFO]- "GET /api/test_list/1/ HTTP/1.1" 200 24874
2019-10-24 22:16:51,721 [django.server:124] [basehttp:log_message] [INFO]- "POST /api/add_case/ HTTP/1.1" 200 0
2019-10-24 22:16:59,707 [django.server:124] [basehttp:log_message] [INFO]- "GET /api/test_list/1/ HTTP/1.1" 200 24874
[root@VM_0_2_centos logs]#
看起来使⽤很简单，但是会有很⼤坑，⽐如时间后⾯的/p不能漏掉了
遇到的坑
开始时间和结束时间必须要是⽇志⾥⾯有的，要是没有的时间，那查就没有结果，这个我也被坑过，看⽹上的教程都是这句，但评论⾥⾯总有⼈说没成功。
后来经过实践，指令是没有问题的，只是开始时间和结束时间必须要是⽇志⾥⾯有才⾏。
如果开始时间⽇志⾥⾯是没有的，那么查询结果为空，⽐如开始时间没有2019-10-24 22:16:22
sed -n '/2019-10-24 22:16:22/,/2019-10-24 22:16:59/p' all.log
如果结束时间⽇志⾥⾯是没有的，查询的结果就是开始时间到最后的全部⽇志
sed -n '/2019-10-24 22:16:21/,/2019-10-24 22:16:58/p' all.log
模糊查询
如果不知道⽇志的开始时间，不能精确到秒，可以⽤模糊查询,⽐如查询时间段2019-10-24 22:14 到 2019-10-24 22:16 sed -n '/2019-10-24 22:14:/,/2019-10-24 22:16:/p' all.log
[root@VM_0_2_centos logs]# sed -n '/2019-10-24 22:14:*/,/2019-10-24 22:16:*/p' all.log
2019-10-24 22:14:04,121 [django.server:124] [basehttp:log_message] [INFO]- code 400, message Bad request version ('HTTP')
2019-10-24 22:14:04,122 [django.server:124] [basehttp:log_message] [WARNING]- "GET ../../mnt/custom/ProductDefinition HTTP" 400 -2019-10-24 22:16:21,052 [django.server:124] [basehttp:log_message] [INFO]- "GET /api/login HTTP/1.1" 301 0
[root@VM_0_2_centos logs]#
也可以按⼩时模糊查询
sed -n '/2019-10-24 21/,/2019-10-24 22/p' all.log
结合grep查询
sed 也可以结合 grep 使⽤，⽐如我查询上⾯⽇志某个时间段的带有POST的⽇志⾏
sed -n '/2019-10-24 22:16:21/,/2019-10-21 20:16:58/p' all.log | grep POST
[root@VM_0_2_centos logs]# sed -n '/2019-10-24 22:16:21/,/2019-10-21 20:16:58/p' all.log | grep post
[root@VM_0_2_centos logs]# sed -n '/2019-10-24 22:16:21/,/2019-10-21 20:16:58/p' all.log | grep POST
2019-10-24 22:16:23,525 [django.server:124] [basehttp:log_message] [INFO]- "POST /api/login/ HTTP/1.1" 302 0
2019-10-24 22:16:51,721 [django.server:124] [basehttp:log_message] [INFO]- "POST /api/add_case/ HTTP/1.1" 200 0
2019-10-24 22:16:59,909 [django.server:124] [basehttp:log_message] [INFO]- "POST /api/add_case/ HTTP/1.1" 200 0
2019-10-24 22:17:19,864 [django.server:124] [basehttp:log_message] [INFO]- "POST /api/add_case/ HTTP/1.1" 200 0
[root@VM_0_2_centos logs]#
⽇志导出
我们可以查询某个时间段的⽇志，导出到本地
sed -n '/2019-10-24 22:16:21/,/2019-10-21 20:16:58/p' all.log > yoyo.log
[root@VM_0_2_centos logs]# sed -n '/2019-10-24 22:16:21/,/2019-10-21 20:16:58/p' all.log > yoyo.log
[root@VM_0_2_centos logs]# ll
total 1740
-rw-r--r-- 1 root root 1907 Oct 24 22:
-rw-r--r-- 1 root root 1081515 Oct 24 23:04 all.log
-rw-r--r-- 1 root root 686962 Oct 24 23:04 script.log
-rw-r--r-- 1 root root 3053 Oct 24 23:08 yoyo.log
[root@VM_0_2_centos logs]#
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