ip_setting.sh~

#!/bin/sh
#创建临时文件和标识
FLAG=0
TMPFILE=`mktemp /tmp/eth.XXXXXXXXX`
#读取用户输入
read -p "Interface: " ETHCARD
#判定用户输入的网卡是否存在
ALLECARD=`ifconfig -a|awk '/^[^[:space:]l]/{print $1}'`

until echo $ALLECARD | grep "$ETHCARD" &> /dev/null;do
    echo -e "\033[31mWrong Card name.\033[0m"
    read -p "Interface: " ETHCARD
done
#网卡路径的变量，以后要多次应用
ETHFILE=/etc/network/interface
#判定用户输入的协议是否正确
read -p "Boot Protocol: " MYBOOTPROTO
until echo $MYBOOTPROTO | grep -E "dhcp|static" &> /dev/null;do
    echo -e "\033[31mWrong BOOTPROTO.\033[0m"
    read -p "Boot Protocol: " MYBOOTPROTO
done
#判定DHCP和static
if [ "$MYBOOTPROTO" == "dhcp" ];then
    sed -i "s/^BOOTPROTO=.*/BOOTPROTO=dhcp/g" $ETHFILE
    if [ $? -eq 0 ];then
	ifdown $ETHCARD && ifup $ETHCARD
	[ $? -eq 0 ] && echo "Set $ETHCARD done."
    fi
elif [ "$MYBOOTPROTO" == "static" ];then
    cat $ETHFILE > $TMPFILE
    read -p "Ip Address: " MYIP
    #判定IP的正确性
    until [[ $MYIP =~ ^([1-9]|[1-9][0-9]|1[0-9]{1,2}