从ifconfig提取IP地址&修改IP地址

#从ifconfig提取IP地址

ifconfig |grep 'inet addr'|awk -F: '{print $2}'|awk '{print $1}'

 

#显示文件中有几行

wc -l file

 

# Vim /etc/sysconfig/network-scripts/ifcfg-eth0DEVICE=eth0
BOOTPROTO=static
BROADCAST=172.10.20.255
IPADDR=172.10.20.5
NETMASK=255.255.255.0
NETWORK=172.10.20.0
ONBOOT=yes

# Vim \etc\resolv.conf

nameserver 172.10.20.1