linux修改ip相关知识

即时生效:

# ifconfig eth0 192.168.0.20 netmask 255.255.255.0

启动生效:

修改/etc/sysconfig/network-scripts/ifcfg-eth0

修改default gateway

即时生效:

# route add default gw 192.168.0.254

启动生效:

修改/etc/sysconfig/network-scripts/ifcfg-eth0

修改dns

修改/etc/resolv.conf

修改后可即时生效，启动同样有效

修改host name

即时生效:

# hostname fc2

启动生效:

修改/etc/sysconfig/network