Linux-netstat

• This article is the study notes; compared to the original may be some comments and modifications
• Please indicate the source

See all ports occupancy, and found details of the software's port occupied in the process, and finally the end of the process

• Check port usage, the last column is the PID/Program name
  use of command: netstat
  the COMMAND:

  netstat –apn

• See more details about the software port occupancy
  using the command: ps, grep
  the COMMAND:

  ps -aux | grep java
  或者直接：
  ps -aux | grep pid

• Terminate the occupation of the port of the software process
  using the command: kill
  COMMANDS:

  kill -9 [pid]
  也可以直接使用如下指令：
  netstat -anp | grep portno

• Use netstatthe command to view occupancy

  netstat -ap |grep 8080 //查找tomcat端口是否被占用

• other

  netstat -tln //表示以数字形式查看正在监听的端口
  netstat -ap //查看所有应用占用端口情况

netstat

netstat	[Options]
-aor--all	Show all connections in the Socket
-A<网络类型>or--<网络类型>	The network connection types are listed in the relevant address
-cor--continuous	Maintains a list of network status
-Cor--cache	Show cached information router configuration
-eor--extend	Other relevant information display network
-For--fib	Display the FIB
-gor--groups	Multi-function display broadcast group members list
-hor--help	Online Help
-ior--interfaces	Display network interface information form
-lor--listening	The display monitor server Socket
-Mor--masquerade	Cloaked network connection
-nor--numeric	Ip address directly, without passing through the domain name server
-NOr --netlinkor--symbolic	Symbolic names are shown connected to network hardware peripheral devices
-oor--timers	Display Timer
-por--programs	Display program identifier and the program name being used Socket
-ror--route	Display Routing Table
-sor--statistice	Statistics show networking information
-tor--tcp	Display the connection status of TCP transport protocol
-uor--udp	Show connection status UDP transport protocol
-vor--verbose	Display during execution of instructions
-Vor--version	Displays version information
-wor--raw	Display the connection status of RAW Transfer Protocol
-xor--unix	And the effect of this parameter specifies the same "-A unix" parameter
--ipor--inet	And the effect of this parameter specifies the same "-A inet" parameter