[root@alanstudio]# ifconfig eth0 192.168.1.10 netmask 255.255.255.0

Modify IP and netmask in eth0 manually

[root@alanstudio]# route add default gw 192.168.1.1

Add default gateway manually

[root@alanstudio]# route add -net 192.168.1.0 netmask 255.255.255.0 gw 192.168.1.1
[root@alanstudio]# route add -net 192.168.1.0/24 gw 192.168.1.1

Add gateway in specific network manually

[root@alanstudio]# vi /etc/hosts
127.0.0.1 abc abc.com localhost.localdomain localhost

Modify hosts name for server

[root@alanstudio]# vi /etc/resolv.conf
nameserver 202.111.222.332
nameserver 202.111.222.333

Modify DNS for server

[root@alanstudio]# vi /etc/sysconfig/network
NETWORKING=yes
HOSTNAME=alanstudio
GATEWAY=192.168.1.1

Modify default gateway and hostname

[root@alanstudio]# vi /etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0
BOOTPROTO=static
BROADCAST=192.168.1.255
HWADDR=00:1A:92:E0:D4:27
IPADDR=192.168.1.10
NETMASK=255.255.255.0
NETWORK=192.168.1.0
GATEWAY=192.168.1.1
ONBOOT=yes

Modify IP,netmask,gateway for eth0



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