linux bash脚本实现网卡名称对应ip地址

将本机的网卡名字存到~/card.txt

把ip存到~/ip.txt

要求∶

用for循环写脚本，实现

一个网卡对应一个ip地址，中间用空格隔开

#!/bin/bash
ifconfig |grep -w inet |cut -d ' ' -f 10 >ip.txt
ifconfig |grep -w mtu |cut -d ':' -f 1 >card.txt
a=(`cat card.txt`)
b=(`cat ip.txt`)
filename="ip.txt"
count=`cat card.txt|wc -l`
#
read -p "Please Input the NetCard Name:" cardname
#
for ((i=0;i<count;i++))
 do
 if [ $cardname = ${a[$i]} ]
 then
  echo "The Netcard $cardname 's IP is :"${b[$i]}
  echo "The row is \"$(($i+1))\" in" \"$filename\"
  exit
 fi
done