awk计算丢包率

1. ＃author souroot
   
2. #email: [e-mail]
   
3. #we use formular: (all the send packets in agents layer)
4. #-(all the recieve packets in agents layer) as all the lost packets
   
5. BEGIN{
   
6.     send;
   
7.     recv;
   
8. }
   
9. {
   
10.     if(($1)=="s" && ($4)=="AGT")
    
11.         send++;
    
12.     if(($1)=="r" && ($4)=="AGT")
    
13.         recv++;
    
14. }
    
15. END{
    
16.     printf "send is %d, recv is %d\n",send,recv;
    
17.     printf "drop rate is %4f\n",(send-recv)/send;
    
18. }

 注意：$1代表第一列，$4代表第四列。BEGIN表示循环开始，END表示循环结束