Modify IP address information in Linux

Modify the IP address immediately effective: www.2cto.com # ifconfigeth0192.168.0.20netmask00000000255.0 start effective: modify/etc/sysconfig/network-scripts/ifcfg-eth0 modify defaultgateway that... modify IP address effective immediately: www.2cto.com # ifconfig eth0 192.168.0.20 netmask 255.255.255.0 start effective: modify/etc/sysconfig/network-scripts/ifcfg-eth0 modify default gateway effective immediately: # route add default gw 192.168.0.254 start effective: modify/etc/sysconfig/network-scripts/ifcfg-eth0 modify dns www.2cto.com modify/etc/ Resolv. the change of conf takes effect immediately. The change of host name takes effect immediately after startup: # hostname fc2 takes effect immediately after startup: modify/etc/sysconfig/network to start the network configuration/etc/init. d/network restart premise: Redhat system ip address, mask: edit/etc/sysconfig/network-script/ifcfg-eth0 IPADDR = 192.168.0.1 NETMASK = 255.255.255.0 Gateway: edit/etc/sysconfig/network NETWORKING = yes HOSTNAME = xx GATEWAY = 192.168.0.100 DNS: www.2cto.com/etc/resolv. conf NAMESERVER = 202.96.209.5 note: The above IP addresses must be changed to the IP address corresponding to your network configuration.. In Linux, it is recommended to modify the IP address vi/etc/sysconfig/network-scripts/ifcfg-eth0 DEVICE = eth0 BOOTPROTO = none BROADCAST = 192.168.1.255 IPADDR = 192.168.1.33 NETMASK = 255.255.255.0 NETWORK = 192.168.1.0 ONBOOT = yes USERCTL = no PEERDNS = no TYPE = Ethernet vi/etc/sysconfig/network-scripts/ifcfg-eth1 DEVICE = eth1 ONBOOT = yes BOOTPROTO = none IPADDR = 192.168.2.34 NETMASK = 255.255.255.0 www.2cto.com USERCTL = no PEERDNS = no TYPE = Ethernet NETWORK = 192.168.2.0 BROADCAST = 192.168.2.255 2 modify GATEWAY vi/etc/sysconfig/network NETWORKING = yes HOSTNAME = Aaron GATEWAY = 192.168.1.1 3 restart the network configuration/etc/init. d/network restart ------------------------ modify the configuration file/etc/sysconfig/network-scripts/under the configuration file such as File: ifcfg-eth0 represents the actual Ethernet NIC 0 configuration file such as File: ifcfg-eth0: 1 indicates the configuration file of the actual Ethernet NIC 0. domain name server configuration file:/etc/resolv. conf modify IP address www.2cto.com effective immediately: # ifconfig eth0 192.168.0.20 netmask 255.255.255.0 effective start: modify/etc/sysconfig/network-scripts/ifcfg-eth0 modify default gateway effective immediately: # route add default gw 192.168.0.254 start effective: modify/etc/sysconfig/network-scripts/ifcfg-eth0 modify dns modify/etc/resolv. conf www.2cto.com can take effect immediately after modification. the modification of host name also takes effect immediately after startup: # hostname fc2 takes effect immediately after startup: modify/etc/sysconfig/network author linux_loajie