Introduction to common network configuration files and Common commands in Linux

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Introduction to common network configuration files and Common commands in Linux

/Etc/sysconfig/network includes the basic network information of the host for system startup. /Etc/sysconfig/network-script/the directory contains the information about the most initialized network started by the system. /Etc/sysconfig/network-script/ifcfg-eth0 network configuration information /Etc/xinetd. conf defines the network service started by the super process xinetd. /Etc/protocols sets the protocol used by the host and the protocol numbers of each Protocol /Etc/services: network services with different ports on the host // Network Configuration Tool # RedHat-config-network     /* Use the ifconfig command to configure and view network interfaces */ // Configure the IP address of eth0 and activate the device # Ifconfig eth0 192.168.168.119 netmask 255.255.255.0 up // Configure the IP address of the eth0 alias device eth0: 1 and add the route # Ifconfig eth0: 1 192.168.168.110 # Route add-host 192.168.168.110 Dev eth0: 1 // Activate (disable) the device # Ifconfig eth0: 1 up (down) // View all (specified) network interface configurations # Ifconfig (eth0)     /* Use the route command to configure the route table */ // Add to host route # Route add-host 192.168.168.110 Dev eth0: 1 # Route add-host 192.168.168.119 GW 192.168.168.1 // Route added to the network # Route add-net IP netmask mask eth0 # Route add-net IP netmask mask GW IP # Route add-net IP/24 eth1 // Add a default gateway # Route add default GW IP // Delete a route # Route del-host 192.168.168.110 Dev eth0: 1     /* Common commands */ # Traceroute www.bcxy.com # Ping www.bcxy.com // Display the network interface status # Netstat-I // Display the socket and program information of all monitored servers # Netstat-LPE // Display kernel route table information # Netstat-R # Netstat-NR // Display the connection status of TCP/UDP transmission protocol # Netstat-T # Netstat-u // Change the Host Name # Hostname myhost // View ARP cache # ARP // Add # ARP-s IP Mac // Delete # ARP-D IP     /* Running level and Network Service */ // View the current running level # Runlevel // Switch the running level # Init # Telinit