针对大量log日志快速定位错误地方
动态查看日志
tail -f catalina.ou
从头打开日志文件
cat catalina.ou
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
tail/head简单命令使用：
[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
第一种方式（根据关键字查找出行号）：
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/2020/312/02/3
NXCRK4U3589_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]
第二种方式：查看指定时间段内的日志
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 18:29:20' catalina.out
grep
'11:07 18:31:11' catalina.out
时间范围内的查询
sed -n
'/11:07 18:29:20/,/11:07 18:31:11/p' catalina.out
sed -n
'/11:07 18:29:/,/11:07 18:31:/p' catalina.out
第三种方式：查看日志中特定字符的匹配数目
[root
@yesky logs]# grep
'1175109632' catalina.out | wc -l
154
第四种方式：查询最后number行，并查找关键字“结果”
[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
第五种方式：查询最后number行，并查找关键字“结果”并且对结果进行标红
[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]
第六种方式：查询最后number行，并查找关键字“结果”并且对结果进行标红，上下扩展两行
[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]
第七种方式：分页查看，使用空格翻页(使用more/less)
[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
附加
1.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
2.单行导航
-
j- 向前移动一行 -
k- 向后移动一行
3.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
原文链接：
blog.csdn.net/nan1996jiang/
article/details/109550303
