linux常用命令(三)

1.查看cpu信息

[root@ipha-dev71-1 proc]# cat /proc/meminfo
MemTotal:       16251672 kB
MemFree:          523996 kB
MemAvailable:    1058824 kB
Buffers:               0 kB
Cached:           473528 kB
SwapCached:       274264 kB
Active:         12841568 kB
Inactive:        1854344 kB
Active(anon):   12709704 kB
Inactive(anon):  1572372 kB
Active(file):     131864 kB
Inactive(file):   281972 kB
Unevictable:           0 kB
Mlocked:               0 kB
SwapTotal:      16777212 kB
SwapFree:       15714656 kB
Dirty:                92 kB
Writeback:             0 kB
AnonPages:      14073736 kB
Mapped:            40924 kB
Shmem:             59692 kB
Slab:             732732 kB
SReclaimable:     459264 kB
SUnreclaim:       273468 kB

2.查看使用cpu最多的两个进程

ps -aux | sort -k3nr | head -n 10

3.查看是使用内存最多的两个进程

ps -aux | sort -k4nr | head -n 10

4.查看文件末尾5行

[root@ipha-dev71-1 config]# tail -n 5 config.ini 
客户端发送理由 : /api/v1/sendChatMessageNoLogin
审方端发送理由 : /api/v1/sendChatMessage
已审查询记录 : /api/v1/queryChatMessage?category=%%s&zoneId=%%s&attachKey=%%s
待审住院获取药嘱信息 : /api/v1/ipt/orderList
已审住院获取药嘱信息 : /api/v1/ipt/all/orderList

5.查看文件前5行

[root@ipha-dev71-1 config]# head -n 5 config.ini 
[login]
address : http://10.1.1.173:9999
username : user1
password : password1
[auditcenter]

6.过滤文件内容中包含ERROR的行

grep "ERROR" filename 或者
cat filename |grep "ERROR"

7.查看端口号所在进程即该进程所在路径

[root@ipha-dev71-1 config]# netstat -pan|grep 8080
tcp6       0      0 :::8080                 :::*                    LISTEN      480/java            
[root@ipha-dev71-1 config]# pwdx 480
480: /home/jenkins

8.查看进程并杀掉进程

[root@ipha-dev71-1 auditcenter]# ps -ef|grep jenkins
root        480      1  0 Aug14 ?        00:09:08 java -jar jenkins.war --httpPort=8080
root      98097  92411  0 12:10 pts/1    00:00:00 grep --color=auto jenkins
[root@ipha-dev71-1 auditcenter]# kill -9 480

9.查看IP地址

ifconfig

10.创建和删除一个多级目录

mkdir -p ./a/b

 rm -rf ./a

11.根目录下查找文件config.ini

[root@ipha-dev71-1 chenjl]# find / -name config.ini
/root/.jenkins/workspace/python_proj/config/config.ini
/root/.jenkins/workspace/python_proj_private/config/config.ini
/root/.jenkins/workspace/auditcenter_python_3.x/config/config.ini

12.动态查看日志文件末尾10行

tailf -10 log_file

13.查看当前机器监听的所有端口

[root@ipha-dev71-1 chenjl]# netstat -tlnp
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name    
tcp        0      0 0.0.0.0:6379            0.0.0.0:*               LISTEN      3377/./redis-server 
tcp        0      0 0.0.0.0:5005            0.0.0.0:*               LISTEN      46490/java          
tcp        0      0 0.0.0.0:9999            0.0.0.0:*               LISTEN      94994/nginx: master 
tcp        0      0 0.0.0.0:111             0.0.0.0:*               LISTEN      1/systemd           
tcp        0      0 0.0.0.0:4369            0.0.0.0:*               LISTEN      3495/epmd           
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      1023/sshd           
tcp        0      0 0.0.0.0:15672           0.0.0.0:*               LISTEN      3616/beam.smp       
tcp        0      0 0.0.0.0:8031            0.0.0.0:*               LISTEN      78331/java          
tcp        0      0 0.0.0.0:9090            0.0.0.0:*               LISTEN      94994/nginx: master 
tcp        0      0 0.0.0.0:4004            0.0.0.0:*               LISTEN      46001/java          
tcp        0      0 0.0.0.0:10278           0.0.0.0:*               LISTEN      94994/nginx: master 
tcp        0      0 0.0.0.0:25672           0.0.0.0:*               LISTEN      3616/beam.smp    

 14.linux环境下从大文件日志中快速搜索指定内容

方法一:

vi fun_with_return.sh  默认进入到指令模式

 

 方式二:

-n 会返回行号,-e指定查找的字符串,head返回查询结果的前3条

 

 打开指定行:

 12.查找某个文件并删除它

find -name  a.txt| xargs rm -rf 

 

posted @ 2019-08-20 12:32  爱打盹的猫猫  阅读(260)  评论(0编辑  收藏  举报