标签：中级 shell grep REGISTER sip CSeq conf root
基础正则：
^ 以什么开头
$ 以什么结尾
^$ 空行
. 任意一个字符 \.为转义“.” \n 回车 \t tab建
* 连续出现
.* 所有
grep --color "^.*REGISTER" /archive/log/tracesbc/tracesbc_sip/tracesbc_sip_1640047578 -n
56277:Allow: ACK, BYE, CANCEL, INFO, INVITE, MESSAGE, NOTIFY, OPTIONS, PRACK, REFER, REGISTER, SUBSCRIBE, UPDATE, PUBLISH
56305:Allow: ACK, BYE, CANCEL, INFO, INVITE, MESSAGE, NOTIFY, OPTIONS, PRACK, REFER, REGISTER, SUBSCRIBE, UPDATE, PUBLISH
56323:REGISTER sip:219.232.39.226 SIP/2.0
56329:CSeq: 1 REGISTER
56343:CSeq: 1 REGISTER
56354:REGISTER sip:219.232.39.226 SIP/2.0
56357:CSeq: 1 REGISTER
56374:CSeq: 1 REGISTER
56391:CSeq: 1 REGISTER
56405:REGISTER sip:219.232.39.226 SIP/2.0
56411:CSeq: 2 REGISTER
56426:CSeq: 2 REGISTER
56437:REGISTER sip:219.232.39.226 SIP/2.0
56440:CSeq: 2 REGISTER
56457:CSeq: 2 REGISTER
56474:CSeq: 2 REGISTER
56502:REGISTER sip:219.232.39.226 SIP/2.0
56508:CSeq: 1 REGISTER
56522:CSeq: 1 REGISTER
56533:REGISTER sip:219.232.39.226 SIP/2.0
56536:CSeq: 1 REGISTER
56553:CSeq: 1 REGISTER
56570:CSeq: 1 REGISTER
56584:REGISTER sip:219.232.39.226 SIP/2.0
56590:CSeq: 2 REGISTER
56605:CSeq: 2 REGISTER
56616:REGISTER sip:219.232.39.226 SIP/2.0
56619:CSeq: 2 REGISTER
56636:CSeq: 2 REGISTER
56653:CSeq: 2 REGISTER
匹配数字
[0-9]
匹配小写[a-z]
匹配大小写
grep '[a-Z0-9]’ redis.conf
grep -i '[a-z0-9]’ redis.conf
取反,例子：取除a、b、c的内容
[^abc]
扩展正则：+ | () {} ?
每一行都有$结尾
cat -A redis.conf
# Set aof rewrite child process to cpu affinity 8,9,10,11:$
# aof_rewrite_cpulist 8-11$
#$
# Set bgsave child process to cpu affinity 1,10,11$
# bgsave_cpulist 1,10-11$
$
# In some cases redis will emit warnings and even refuse to start if it detects$
# that the system is in bad state, it is possible to suppress these warnings$
# by setting the following config which takes a space delimited list of warnings$
# to suppress$
#$
# ignore-warnings ARM64-COW-BUG$
[root@demo1 conf]# sed -i 's/6381/6882/g' myredis6382.conf |more
[root@demo1 conf]# cat -A redis.conf |more
# Redis configuration file example.$
#$
# Note that in order to read the configuration file, Redis must be$
# started with the file path as first argument:$
#$
# ./redis-server /path/to/redis.conf$
$
# Note on units: when memory size is needed, it is possible to specify$
# it in the usual form of 1k 5GB 4M and so forth:$
#$
# 1k => 1000 bytes$
# 1kb => 1024 bytes$
# 1m => 1000000 bytes$
# 1mb => 1024*1024 bytes$
# 1g => 1000000000 bytes$
# 1gb => 1024*1024*1024 bytes$
查找root在一个文件中，并标记颜色
[root@demo1 conf]# grep --color "root" /etc/passwd
root:x:0:0:root:/root:/bin/bash
operator:x:11:0:operator:/root:/sbin/nologin
标记出第几行
[root@demo1 conf]# grep --color -n "root" /etc/passwd
1:root:x:0:0:root:/root:/bin/bash
10:operator:x:11:0:operator:/root:/sbin/nologin
grep正则^ 例子：以root开头
[root@demo1 conf]# grep --color -n "^root" /etc/passwd
1:root:x:0:0:root:/root:/bin/bash
grep正则$ 例子：以bash结尾
[root@demo1 conf]# grep --color -n “bash$" /etc/passwd
1:root:x:0:0:root:/root:/bin/bash
过滤出ip地址的行
[root@demo1 conf]# cat test.txt
192.168.3.3
10.0.0.1
111.111.111.11
11111.111.222.333
111.111.111.11.
[root@demo1 conf]# egrep --color "^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$" test.txt
192.168.3.3
10.0.0.1
111.111.111.11
简写
[root@demo1 conf]# egrep --color "^[0-9]{1,3}\.([0-9]{1,3}\.){2}[0-9]{1,3}$" test.txt
192.168.3.3
10.0.0.1
111.111.111.11
-c统计数量
[root@SBCE1 ipcs]# grep --color -c "sip" /archive/log/tracesbc/tracesbc_sip/tracesbc_sip_1640015158
4348
标签：中级,shell,grep,REGISTER,sip,CSeq,conf,root 来源： https://blog.csdn.net/u010036229/article/details/122482409
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