shell 根据用户的要求修改ip获取方式 并修改ip以及掩码

   1 #!/bin/bash

  2 read_ip () {

  3 read -p "please input your IP: " IP

  4 read -p "please input your NETMASK: " MASK

  5 read -p "please input your gateway: " GATE

  6 read -p "please input your dns address: " DNS

  7 }

  8 get_ip_way () {

  9 read -p "Please input a Network Card that you want to setup:" CARD

 10 echo "The way your system get ip is: `grep '^BOOTPROTO*' /etc/sysconfig/network-scripts/ifcfg-$CARD | cut -d'=' -f2`"   

 11 }

 12 

 13 set_ip_way () {

 14 sed -i 's/^BOOTPROTO=dhcp/BOOTPROTO=static/' /etc/sysconfig/network-scripts/ifcfg-$CARD

 15 if [ $? == 0 ];then

 16  echo "IPADDR=$IP" >> /etc/sysconfig/network-scripts/ifcfg-$CARD

 17  echo "NETMASK=$MASK" >> /etc/sysconfig/network-scripts/ifcfg-$CARD

 18  echo "GATEWAY=$GATE" >> /etc/sysconfig/network-scripts/ifcfg-$CARD

 19 else

 20 sed -i 's/^IPADD.*/IPADDR='$IP'/' /etc/sysconfig/network-scripts/ifcfg-$CARD

 21 sed -i 's/^NETMASK.*/NETMASK='$MASK'/' /etc/sysconfig/network-scripts/ifcfg-$CARD

 22 sed -i 's/^GATEWA.*/GATEWAY='$GATE'/' /etc/sysconfig/network-scripts/ifcfg-$CARD

 23 fi

 24 sed -i 's/^name.*/nameserver '$DNS'/' /etc/resolv.conf

 25 echo "Setting..."

 26 service network restart &> /dev/null

 27 echo "setup is successful."

 28 }

 29 

 30 get_ip_way

 31 read_ip

 32 set_ip_way