芯片资讯
你的位置：CMOS图像传感器IC集成电路芯片-亿配芯城 > 芯片资讯 > 后台开发中netstat命令使用方法
后台开发中netstat命令使用方法
- 发布日期：2023-12-31 07:50 点击次数：78
后台开发，netstat命令总是绕不过，不仅工作中经常用过，面试也是考的多。netstat命令，对应的选项比较多， 芯片交易网IC交易网功能比较强大。netstat 常用来查看， ATMEGA系列ATMEL芯片COMCMOS图像传感器IC集成电路芯片后台服务进程的相关状态。
netstat 可以用来打印网络连接、路由表、连接的数据统计。下面我们来学习一下。
打印所有连接使用 -a， CMOS图像传感器集成电路芯片列出所有连接。
[root@VM-16-9-centos ~]# netstat -a Active Internet connections (servers and established) Proto Recv-Q Send-Q Local Address Foreign Address State tcp 0 0 0.0.0.0:ssh 0.0.0.0:* LISTEN tcp 0 0 VM-16-9-centos:49326 169.254.0.55:lsi-bobcat ESTABLISHED tcp 0 52 VM-16-9-centos:ssh 119.137.1.7:20029 ESTABLISHED tcp 0 0 VM-16-9-centos:ssh 113.110.224.255:63626 ESTABLISHED tcp6 0 0 [::]:mysql [::]:* LISTEN udp 0 0 0.0.0.0:bootpc 0.0.0.0:* udp 0 0 VM-16-9-centos:ntp 0.0.0.0:* udp 0 0 VM-16-9-centos:ntp 0.0.0.0:* udp 0 0 0.0.0.0:38064 0.0.0.0:* udp6 0 0 VM-16-9-centos:ntp [::]:* udp6 0 0 VM-16-9-centos:ntp [::]:*打印 TCP 或 UDP 连接
使用 -t 选项列出 TCP 协议的连接。
[root@VM-16-9-centos ~]# netstat -t Active Internet connections (w/o servers) Proto Recv-Q Send-Q Local Address Foreign Address State tcp 0 0 VM-16-9-centos:49326 169.254.0.55:lsi-bobcat ESTABLISHED tcp 0 52 VM-16-9-centos:ssh 119.137.1.7:20029 ESTABLISHED tcp 0 0 VM-16-9-centos:ssh 113.110.224.255:63626 ESTABLISHED tcp 0 0 VM-16-9-centos:ssh vps-d395feee.vps.:39128 ESTABLISHED
使用 -u 选项列出 UDP 协议的连接。
[root@VM-16-9-centos ~]# netstat -u Active Internet connections (w/o servers) Proto Recv-Q Send-Q Local Address Foreign Address State禁用反向域名解析
使用 -n 选项禁用域名解析功能， 电子元器件PDF资料大全这样可以加快查找速度。
[root@VM-16-9-centos ~]# netstat -n Active Internet connections (w/o servers) Proto Recv-Q Send-Q Local Address Foreign Address State tcp 0 0 172.17.16.9:49326 169.254.0.55:5574 ESTABLISHED tcp 0 52 172.17.16.9:22 119.137.1.7:20029 ESTABLISHED tcp 0 0 172.17.16.9:22 113.110.224.255:63626 ESTABLISHED tcp 0 0 172.17.16.9:52236 169.254.0.4:80 TIME_WAIT显示对应的程序识别码和程序名称
使用 -p 选项列出正在监听的套接字。
[root@VM-16-9-centos ~]# netstat -p Active Internet connections (w/o servers) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 VM-16-9-centos:49326 169.254.0.55:lsi-bobcat ESTABLISHED 1400/YDService tcp 0 52 VM-16-9-centos:ssh 119.137.1.7:20029 ESTABLISHED 22131/sshd: root@pt tcp 0 0 VM-16-9-centos:ssh host-188-14-121-2:55529 TIME_WAIT - tcp 0 0 VM-16-9-centos:ssh 113.110.224.255:63626 ESTABLISHED 32201/sshd: root@pt打印监听中的连接
使用 -l 选项列出正在监听的套接字。
[root@VM-16-9-centos ~]# netstat -l Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State tcp 0 0 0.0.0.0:ssh 0.0.0.0:* LISTEN tcp6 0 0 [::]:mysql [::]:* LISTEN udp 0 0 0.0.0.0:bootpc 0.0.0.0:*打印连接进程信息
使用 -p 选项查看进程信息。
[root@VM-16-9-centos ~]# netstat -p Active Internet connections (w/o servers) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 VM-16-9-centos:49326 169.254.0.55:lsi-bobcat ESTABLISHED 1400/YDService tcp 0 0 VM-16-9-centos:48680 169.254.0.55:webcache TIME_WAIT - tcp 0 52 VM-16-9-centos:ssh 119.137.1.7:20029 ESTABLISHED 22131/sshd: root@pt tcp 0 0 VM-16-9-centos:ssh 113.110.224.255:63626 ESTABLISHED 32201/sshd: root@pt tcp 0 0 VM-16-9-centos:ssh host-188-14-121-2:56025 ESTABLISHED 10384/sshd: unknown打印网络工作信息统计表
使用 -s 选项查看进程信息(只展示部分结果)。
[root@VM-16-9-centos ~]# netstat -s
Ip:
7502855 total packets received
0 forwarded
0 incoming packets discarded
7502837 incoming packets delivered
7624338 requests sent out
40 dropped because of missing route
Icmp:
938052 ICMP messages received
147 input ICMP message failed.
ICMP input histogram:
destination unreachable: 411
timeout in transit: 8
redirects: 2
echo requests: 937623
echo replies: 7
timestamp request: 1
946258 ICMP messages sent
0 ICMP messages failed
ICMP output histogram:
destination unreachable: 8634
echo replies: 937623
timestamp replies: 1
打印网络接口使用 -i 选项查看进程信息。
[root@VM-16-9-centos ~]# netstat -i Kernel Interface table Iface MTU RX-OK RX-ERR RX-DRP RX-OVR TX-OK TX-ERR TX-DRP TX-OVR Flg eth0 1500 7825094 0 0 0 7712988 0 0 0 BMRU lo 65536 10230 0 0 0 10230 0 0 0 LRU持续输出信息
使用 -c 选项查看进程信息。
[root@VM-16-9-centos ~]# netstat -c Active Internet connections (w/o servers) Proto Recv-Q Send-Q Local Address Foreign Address State tcp 0 0 VM-16-9-centos:49326 169.254.0.55:lsi-bobcat ESTABLISHED tcp 0 52 VM-16-9-centos:ssh 119.137.1.7:20029 ESTABLISHED tcp 0 0 VM-16-9-centos:ssh vps-d395feee.vps.:39442 ESTABLISHED tcp 0 0 VM-16-9-centos:ssh 113.110.224.255:63626 ESTABLISHED tcp 0 0 VM-16-9-centos:52660 169.254.0.4:http TIME_WAIT tcp 0 0 VM-16-9-centos:ssh b3d278e1.virtua.c:35113 TIME_WAIT tcp 0 0 VM-16-9-centos:ssh 58.230.147.230:56693 TIME_WAIT Active UNIX domain sockets (w/o servers) Proto RefCnt Flags Type State I-Node Path unix 3 [ ] DGRAM 7444 /run/systemd/notify根据进程pid查端口
利用 grep 命令，EEPROM带电可擦可编程存储器芯片大全通过进程 pid 查出监听端口。
[root@VM-16-9-centos test]# netstat -nap|grep 12178 tcp6 0 0 :::8888 :::* LISTEN 12178/gin根据端口查进程
利用 grep 命令，通过监听端口查出进程 pid 。
[root@VM-16-9-centos test]# netstat -nap|grep 8888 tcp6 0 0 :::8888 :::* LISTEN 12178/gin统计网络socket状态
借助 awk 命令，统计socket状态对应的个数。
[test]# netstat -n | awk '/^tcp/ {++S[$NF]} END {for(a in S) print a， S[a]}'
ESTABLISHED 5
TIME_WAIT 2
相关资讯
- 气压计LPS28DFW开发(2)----水压检测2024-01-16
- 为 SylixOS 打造最强开发平台！翼辉发布RealEvo 6.0 版本2024-01-05
- 教授团队开发用于在室温下检测氨气的快速反应传感器2024-01-01