只显示指定网卡IP地址命令

export eth=1&&netstat -ie|awk -F'[: ]' 'begin{found=0;} 
{ if (match($0,"eth'"$eth"'")) found=1; 
else if ((1==found) && match($0,"eth")) found=0; 
if ((1==found) && match($0,"inet addr:") && match($0,"Bcast:")) print $13; }'