电子说
动态查看日志
tail -f catalina.out
从头打开日志文件
cat catalina.out
可以使用 >nanjiangtest.txt 输出某个新日志去查看
[root@yesky logs]# cat -n catalina.out |grep 717892466 >nanjiangtest.txt
[root@yesky logs]# tail -n number catalina.out 查询日志尾部最后number行的日志
[root@yesky logs]# tail -n +number catalina.out 查询number行之后的所有日志
[root@yesky logs]# head -n number catalina.out 查询日志文件中的前number行日志
[root@yesky logs]# head -n -number catalina.out 查询日志文件除了最后number行的其他所有日志
用 grep 拿到的日志很少,我们需要查看附近的日志。我是这样做的,首先: cat -n test.log | grep “关键词” 得到关键日志的行号
[root@yesky logs]# cat -n catalina.out |grep 717892466
13230539 [11:07 17:47:11] INFO nanjiang:Edit Old Article:717892466-2020-11-07 17:47:11
13230593 [11:07 17:47:15] INFO nanjiangSave Article ID IS:717892466
13230595 717892466 article.getDisplayTime()1 = 2020-11-07 16:25:11
13230596 717892466 article.getDisplayTime()2 = 2020-11-07 16:25:11
13230601 [11:07 17:47:15] INFO 南江 10.10.10.39 edit article 717892466 编辑文章
cat -n catalina.out|tail -n +13230539|head -n 10
tail -n +13230539表示查询13230539行之后的日志
head -n 10 则表示在前面的查询结果里再查前10条记录
[root@yesky logs]# cat -n catalina.out |tail -n +13230539|head -n 10
13230539 [11:07 17:47:11] INFO nanjiang:Edit Old Article:717892466-2020-11-07 17:47:11
13230540 [11:07 17:47:11] INFO Takes:2 ms class com.tmg.cms.manager.dao.article.impl.ArticleContentDaoImpl getListByArticleId [NzE3ODkyNDY2] [int]
13230541 [11:07 17:47:11] INFO Takes:1 ms class com.tmg.cms.manager.dao.resourceImage.impl.ResourceImageDaoImpl load
13230542 [11:07 17:47:11] INFO Takes:0 ms class com.tmg.cms.manager.dao.resourceImage.impl.ResourceImageDaoImpl load
13230543 [11:07 17:47:11] INFO Takes:1 ms class com.tmg.cms.manager.dao.resourceImage.impl.ResourceImageDaoImpl load
13230544 [11:07 17:47:11] INFO article.getImage3:/uploadImages/2020/312/02/3NXCRK4U3589_2.jpg
13230545 [11:07 17:47:11] INFO Takes:0 ms class com.tmg.cms.manager.dao.resourceImage.impl.ResourceImageDaoImpl load
13230546 [11:07 17:47:11] INFO Takes:2 ms class com.tmg.cms.manager.dao.privilege.impl.UserDaoImpl getUserByid
13230547 [11:07 17:47:11] INFO Takes:57 ms class com.tmg.cms.manager.dao.sitemap.impl.SitemapDaoImpl selectSitemapWithoutAudit [MQ==] [int]
13230548 [11:07 17:47:11] INFO Takes:5 ms class com.tmg.cms.manager.dao.forbidword.impl.ForbidwordDaoImpl getForbidwordBysiteid [MjI=] [int]
首先要进行范围时间段内日志查询先查看是否在当前日之内存在
grep '11:07 1820' catalina.out
grep '11:07 1811' catalina.out
时间范围内的查询
sed -n '/11:07 1820/,/11:07 1811/p' catalina.out
sed -n '/11:07 18/,/11:07 18/p' catalina.out
[root@yesky logs]# grep '1175109632' catalina.out | wc -l
154
[root@yesky logs]# tail -n 20 catalina.out | grep 'INFO Takes:1'
[11:11 22:02:51] INFO Takes:1 ms class com.tmg.cms.manager.dao.config.impl.ConfigInfoDaoImpl load
[11:11 22:02:51] INFO Takes:1 ms class com.tmg.cms.manager.dao.sitemap.impl.SitemapDaoImpl getSitemapTop [NTkwOTQ5] [int]
[11:11 22:02:51] INFO Takes:1 ms class com.tmg.cms.manager.dao.sitemap.impl.SitemapDaoImpl getSitemapTop [MzI0] [int]
[11:11 22:02:51] INFO Takes:1 ms class com.tmg.cms.manager.dao.sitemap.impl.SitemapDaoImpl getSitemapTop [MzI3] [int]
[11:11 22:02:51] INFO Takes:1 ms class com.tmg.cms.manager.dao.sitemap.impl.SitemapDaoImpl getSitemapTop [MzMw] [int]
[11:11 22:02:51] INFO Takes:1 ms class com.tmg.cms.manager.dao.sitemap.impl.SitemapDaoImpl getSitemapTop [MzA5NA==] [int]
[11:11 22:02:51] INFO Takes:1 ms class com.tmg.cms.manager.dao.sitemap.impl.SitemapDaoImpl getSitemapTop [Mzc4Mg==] [int]
[11:11 22:02:51] INFO Takes:1 ms class com.tmg.cms.manager.dao.sitemap.impl.SitemapDaoImpl getSitemapTop [OTM1MA==] [int]
[11:11 22:02:51] INFO Takes:1 ms class com.tmg.cms.manager.dao.sitemap.impl.SitemapDaoImpl getSitemapTop [MTE5MDMw] [int]
[11:11 22:02:51] INFO Takes:1 ms class com.tmg.cms.manager.dao.sitemap.impl.SitemapDaoImpl getSitemapTop [NTQ2MzQw] [int]
[11:11 22:02:51] INFO Takes:1 ms class com.tmg.cms.manager.dao.sitemap.impl.SitemapDaoImpl getSitemapTop [NTg2NzYy] [int]
[11:11 22:02:51] INFO Takes:1 ms class com.tmg.cms.manager.dao.sitemap.impl.SitemapDaoImpl getSitemapTop [MzYyMjA=] [int]
[11:11 22:02:51] INFO Takes:1 ms class com.tmg.cms.manager.dao.configModule.impl.ConfigModuleDaoImpl getPersonMenuList
[root@yesky logs]# tail -n 20 catalina.out | grep 'INFO Takes:1' --color
[11:11 22:02:51] INFO Takes:1 ms class com.tmg.cms.manager.dao.config.impl.ConfigInfoDaoImpl load
[11:11 22:02:51] INFO Takes:1 ms class com.tmg.cms.manager.dao.sitemap.impl.SitemapDaoImpl getSitemapTop [NTkwOTQ5] [int]
[11:11 22:02:51] INFO Takes:1 ms class com.tmg.cms.manager.dao.sitemap.impl.SitemapDaoImpl getSitemapTop [MzI0] [int]
[11:11 22:02:51] INFO Takes:1 ms class com.tmg.cms.manager.dao.sitemap.impl.SitemapDaoImpl getSitemapTop [MzI3] [int]
[11:11 22:02:51] INFO Takes:1 ms class com.tmg.cms.manager.dao.sitemap.impl.SitemapDaoImpl getSitemapTop [MzMw] [int]
[11:11 22:02:51] INFO Takes:1 ms class com.tmg.cms.manager.dao.sitemap.impl.SitemapDaoImpl getSitemapTop [MzA5NA==] [int]
[11:11 22:02:51] INFO Takes:1 ms class com.tmg.cms.manager.dao.sitemap.impl.SitemapDaoImpl getSitemapTop [Mzc4Mg==] [int]
[11:11 22:02:51] INFO Takes:1 ms class com.tmg.cms.manager.dao.sitemap.impl.SitemapDaoImpl getSitemapTop [OTM1MA==] [int]
[11:11 22:02:51] INFO Takes:1 ms class com.tmg.cms.manager.dao.sitemap.impl.SitemapDaoImpl getSitemapTop [MTE5MDMw] [int]
[11:11 22:02:51] INFO Takes:1 ms class com.tmg.cms.manager.dao.sitemap.impl.SitemapDaoImpl getSitemapTop [NTQ2MzQw] [int]
[11:11 22:02:51] INFO Takes:1 ms class com.tmg.cms.manager.dao.sitemap.impl.SitemapDaoImpl getSitemapTop [NTg2NzYy] [int]
[11:11 22:02:51] INFO Takes:1 ms class com.tmg.cms.manager.dao.sitemap.impl.SitemapDaoImpl getSitemapTop [MzYyMjA=] [int]
[root@yesky logs]# tail -n 20 catalina.out | grep 'INFO Takes:1' --color -a2
[11:11 22:02:51] INFO Takes:0 ms class com.tmg.cms.manager.dao.article.impl.ArticleContentDaoImpl getArticlePageNum [NzE4MTM2ODky] [int]
[11:11 22:02:51] INFO Takes:1 ms class com.tmg.cms.manager.dao.config.impl.ConfigInfoDaoImpl load [com.tmg.cms.manager.model.config.ConfigInfo]
[11:11 22:02:51] INFO Takes:1 ms class com.tmg.cms.manager.dao.sitemap.impl.SitemapDaoImpl getSitemapTop [NTkwOTQ5] [int]
[11:11 22:02:51] INFO Takes:1 ms class com.tmg.cms.manager.dao.sitemap.impl.SitemapDaoImpl getSitemapTop [MzI0] [int]
[11:11 22:02:51] INFO Takes:0 ms class com.tmg.cms.manager.dao.sitemap.impl.SitemapDaoImpl getSitemapTop [MzI1] [int]
[11:11 22:02:51] INFO Takes:1 ms class com.tmg.cms.manager.dao.sitemap.impl.SitemapDaoImpl getSitemapTop [MzI3] [int]
[11:11 22:02:51] INFO Takes:1 ms class com.tmg.cms.manager.dao.sitemap.impl.SitemapDaoImpl getSitemapTop [MzMw] [int]
[11:11 22:02:51] INFO Takes:0 ms class com.tmg.cms.manager.dao.sitemap.impl.SitemapDaoImpl getSitemapTop [MzAzNg==] [int]
[11:11 22:02:51] INFO Takes:1 ms class com.tmg.cms.manager.dao.sitemap.impl.SitemapDaoImpl getSitemapTop [MzA5NA==] [int]
[11:11 22:02:51] INFO Takes:1 ms class com.tmg.cms.manager.dao.sitemap.impl.SitemapDaoImpl getSitemapTop [Mzc4Mg==] [int]
[11:11 22:02:51] INFO Takes:1 ms class com.tmg.cms.manager.dao.sitemap.impl.SitemapDaoImpl getSitemapTop [OTM1MA==] [int]
[11:11 22:02:51] INFO Takes:0 ms class com.tmg.cms.manager.dao.sitemap.impl.SitemapDaoImpl getSitemapTop [MTE0MjQ4] [int]
[11:11 22:02:51] INFO Takes:0 ms class com.tmg.cms.manager.dao.sitemap.impl.SitemapDaoImpl getSitemapTop [MTE4MDc4] [int]
[11:11 22:02:51] INFO Takes:1 ms class com.tmg.cms.manager.dao.sitemap.impl.SitemapDaoImpl getSitemapTop [MTE5MDMw] [int]
[11:11 22:02:51] INFO Takes:1 ms class com.tmg.cms.manager.dao.sitemap.impl.SitemapDaoImpl getSitemapTop [NTQ2MzQw] [int]
[11:11 22:02:51] INFO Takes:0 ms class com.tmg.cms.manager.dao.sitemap.impl.SitemapDaoImpl getSitemapTop [NTQ3MTIw] [int]
[11:11 22:02:51] INFO Takes:0 ms class com.tmg.cms.manager.dao.sitemap.impl.SitemapDaoImpl getSitemapTop [NTY4OTYx] [int]
[11:11 22:02:51] INFO Takes:1 ms class com.tmg.cms.manager.dao.sitemap.impl.SitemapDaoImpl getSitemapTop [NTg2NzYy] [int]
[11:11 22:02:51] INFO Takes:1 ms class com.tmg.cms.manager.dao.sitemap.impl.SitemapDaoImpl getSitemapTop [MzYyMjA=] [int]
[11:11 22:02:51] INFO Takes:1 ms class com.tmg.cms.manager.dao.configModule.impl.ConfigModuleDaoImpl getPersonMenuList [com.tmg.cms.manager.model.config.ConfigPersonMenu]
[root@yesky logs]# tail -n 2000 catalina.out | grep 'INFO Takes:1' --color -a2 | more
[root@yesky logs]# tail -n 2000 catalina.out | grep 'INFO Takes:1' --color -a2 | less
全屏导航
ctrl + F - 向前移动一屏
ctrl + B - 向后移动一屏
ctrl + D - 向前移动半屏
ctrl + U - 向后移动半屏
单行导航
j - 向前移动一行
k - 向后移动一行
其它导航
G - 移动到最后一行
g - 移动到第一行
q / ZZ - 退出 less 命令
审核编辑 :李倩
全部0条评论
快来发表一下你的评论吧 !