Common Centos 7 Operations

Common Centos 7 Operations
View port usage

Netstat command
　

-A or-all shows the sockets in all connections.

-A <network type> or-<network type> lists the related addresses of the network type connections.

-C or-continuous continuously lists the network status.

-C or-cache displays the cache information of the vro configuration.

-E or-extend displays other network-related information.

-F or-fib displays FIB.

-G or-groups displays a list of members of the Multi-Broadcast Function Group.

-H or-help online help.

-I or-interfaces displays the network interface information form.

-L or-listening displays the Socket of the monitored server.

-M or-masquerade displays disguised network connections.

-N or-numeric directly uses the IP address instead of the Domain Name Server.

-N or-netlink or-symbolic indicates the symbolic connection name of the network hardware peripheral device.

-O or-timers displays the timer.

-P or-programs shows the program identification code and program name using Socket.

-R or-route displays the Routing Table.

-S or-statistice displays a statistical table of network work information.

-T or-tcp shows the connection status of the TCP transmission protocol.

-U or-udp shows the connection status of UDP transmission protocol.

-V or-verbose displays the command execution process.

-V or-version displays version information.

-W or-raw shows the RAW transmission protocol connection status.

-X or-unix: this parameter has the same effect as the specified "-A unix" parameter.

-Ip or-inet: the effect of this parameter is the same as that of the specified "-A inet" parameter.

Common

Netstat-ntpl
View the pid ID and socket of all tcp connections as IP addresses.

Restart host

Reboot

File Operations

Create a folder named mkdir
Create File vi
File movement and rename mv
Delete the rm-r File
Copy and paste cp
Go to the directory cd

Service Operations

Disable service kill pid