Commands related to CentOS network settings (manually configured by vim): >>> configure a fixed IP address <[root @ localhost ~] # Vi/etc/sysconfig/network-scripts/ifcfg-eth0 [root @ localhost ~] # Cat/etc/sysconfig/network-scripts/ifcfg-eth0 # Advanced Micro Devices [AMD] 79c970 [PCnet32 LANCE] DEVICE = eth0BOOTPROTO = staticHWADDR = 00: 0C: 29: D1: A6: EDONBOOT = yesIPADDR = 192.168.160.11NETMASK = 255.255.255.0BROARDCAST = 192.168.160.255GATEWAY = 192.168.160.1 [root @ localhost ~] #/Etc/init. d/network restartShutting down interface eth0: [OK] Shutting down loopback interface: [OK] Bringing up loopback interface: [OK] Bringing up interface eth0: [OK] [root @ localhost ~] # Ifconfig eth0eth0 Link encap: Ethernet HWaddr 00: 0C: 29: D1: A6: ED inet addr: 192.168.160.11 Bcast: 192.168.160.255 Mask: 255.255.0 inet6 addr: fe80: 20c: 29ff: fed1: a6ed/64 Scope: Link up broadcast running multicast mtu: 1500 Metric: 1 RX packets: 13960 errors: 0 dropped: 0 overruns: 0 frame: 0 TX packets: 4796 errors: 0 dropped: 0 overruns: 0 carrier: 0 collisions: 0 txqueuelen: 1000 RX bytes: 3749651 (3.5 MiB) TX Bytes: 480572 (469.3 KiB) Interrupt: 75 Base address: 0x2000 >>>> configure DNS address <[root @ localhost ~] # Vi/etc/resolv. conf [root @ localhost ~] # Cat/etc/resolv. confsearch localdomainnameserver 192.168.160.1nameserver 202.101.172.46 >>>> modify the host name <[root @ localhost ~] # Vi/etc/sysconfig/network [root @ localhost ~] # Cat/etc/sysconfig/networkNETWORKING = yesNETWORKING_IPV6 = noHOSTNAME = leekwen. leekwen [root @ localhost ~] # Ifconfig eth0 [root @ localhost ~] # Vi/etc/resolv. conf [root @ localhost ~] # Cat/etc/resolv. confsearch localdomainnameserver 192.168.160.1nameserver 202.101.172.46